BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Observation of a new effect in the ternary fission of 252Cf(sf) wi th the emission of alpha particles DTSTART;VALUE=DATE-TIME:20221130T094500Z DTEND;VALUE=DATE-TIME:20221130T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3188@cern.ch DESCRIPTION:Speakers: Alexandr Strekalovskiy (Joint Institute for Nuclear Research\, Dubna\, Russia)\nThe mass distributions of 252Cf(sf) ternary fi ssion fragments with the emission of a light charged particle are measured . The experiment was carried out on a modernized COMETA time-of-flight spe ctrometer consisting of 28 silicon pin diodes with a thin input window and a starting detector based on microchannel plates. The threshold for the m easured particle energy was ~1 MeV. The mass resolution for alpha particle s was ~0.34 amu. It was found for the first time that in fission events wi th alpha particles emitted at an angle close to 90° to the fission axis\, a fragment passing through the emitting foil of the starting detector los es mass up to 16 amu. decay [1-4].\nYu.V. Pyatkov et al.\, Eur. Phys. J. A . 45\, 29 (2010).\nYu.V. Pyatkov et al.\, Eur. Phys. J. A. 48\, 94 (2012). \nD.V. Kamanin and Yu.V. Pyatkov\, Clusters in Nuclei\, Lecture Notes in P hysics. 875\, 183 (2013).\nYu.V. Pyatkov et al.\, Phys. Rev. C. 96\, 06460 6 (2017).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3188 / LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3188/ END:VEVENT BEGIN:VEVENT SUMMARY:Welcome from rector of NRNU MEPhI DTSTART;VALUE=DATE-TIME:20221129T093500Z DTEND;VALUE=DATE-TIME:20221129T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3267@cern.ch DESCRIPTION:Speakers: Vladimir Shevchenko (NRNU MEPhI)\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3267/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3267/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of deuteron-proton elastic scattering at intermediate energi es. DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3418@cern.ch DESCRIPTION:Speakers: Nadezhda Ladygina (JINR)\nWe study deuteron- proton elastic scattering in the GeV energy range.\nNowadays\, a significant amo unt of the experimental data at these energies\n has been accumulated bot h with unpolarized and polarized beams. However\,\na theoretical descripti on of the data faces problems because of\nwell developed Faddeev calculat ion technique cannot be applied at these energies. \n\nIn this report w e consider deuteron- proton elastic scattering in the \nrelativistic multi ple scattering expansion framework. The following reaction mechanisms are included into consideration: one-nucleon exchange\, single scattering\, an d double scattering. Also\, the term corresponding to the delta excitation in the intermediate state is taken into account. This model \nis applied for a description of the experimental data both on the differential cross section and polarization observables in a whole angular range. \nThe obta ined theoretical predictions are compared with the existing experimental data. Effects of the different reaction mechanisms are analyzed.\n\nhttps ://indico.particle.mephi.ru/event/275/contributions/3418/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3418/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of systematic uncertainty in measurement of neutral pion yie ld in Ag+Ag collisions at 1.23 A GeV beam energy DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3417@cern.ch DESCRIPTION:Speakers: Arseniy Shabanov ()\nMeasurement of π0 yield is an important part of analysis of heavy ion collisions data. The momentum and angular distributions of π0 provide information about thermodynamic prope rties of the hadronic matter right after the chemical and kinetic freez-ou t. Also these measurements play an important role in reducing the systemat ic uncertainties in study of dilepton spectra. \nThe decay π0 → γγ ha s 99% branching ratio and thus provides the best statistics for such analy sis. The Ag + Ag data at the beam energy 1.23 A GeV have been studied. The events with centrality 0-30 % were selected for the analysis. The procedu re of π0 yield determination is discussed in this talk. It includes calib ration of the involved detector\, its acceptance and efficiency correction s. Particular attention is paid on studying the systematic uncertainty of these measurements.\n\nhttps://indico.particle.mephi.ru/event/275/contribu tions/3417/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3417/ END:VEVENT BEGIN:VEVENT SUMMARY:DESCRIPTION OF HEAVY-ION FRAGMENTATION REACTIONS AT FERMI ENERGIES IN COMBINED TRANSPORT-STATISTICAL APPROACH. DTSTART;VALUE=DATE-TIME:20221130T171500Z DTEND;VALUE=DATE-TIME:20221130T173000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3275@cern.ch DESCRIPTION:Speakers: Tatiana Mikhailova (JINR)\n**Heavy-ion-induced proje ctile fragmentation reactions at Fermi energies are of interest to investi gate the properties of nuclei far from the valley of stability\, to know m ore about nuclear potential and equation of state of nuclear matter. These reactions are also useful to obtain exotic nuclei to be used as secondar y beams. The reaction mechanism of these reaction is complicated\, this e nergy region is in between the deep-inelastic collisions and direct react ions. This can be seen from the shape of velocity distributions of fragme nts. These distributions are peaked at project velocity\, which is usual a t relativistic energies. But they have long tail to the lower velocities due to deep-inelastic mode of the reaction. Here we treat such reactions in a microscopic approach [1]\, which consists of several steps: initializ ation of ground states of the colliding nuclei\, dynamical evolution until the freeze-out point\, calculation of the excitation energy of the primar y fragments\, and their de-excitation by emission of particles and radiati on. For the dynamical evolution we use a Boltzmann--Vlasov type transport method\, and for the de-excitation a statistical multi-fragmentation descr iption. We apply this approach to collisions of 40Ar projectile nuclei on 9Be target\, and calculate isotope distributions and velocity spectra of the produced isotopes. We compare the results of our calculations to exper imental data obtained at COMBAS set-up in FLNR\, JINR [2].\n\nREFERENCES\n \n1. T. I. Mikhailova\, B. Erdemchimeg\, A. G. Artukh\, et al.\, Phys. of Atom. Nucl.\, 2016\, V79 \, P. 604. \n2. Artukh\, A. G.\, Klygin S.A.\, Ko nonenko G. A. et al. // PEPAN\, 2016\,V 47\, P 49.\n**\n\nhttps://indic o.particle.mephi.ru/event/275/contributions/3275/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3275/ END:VEVENT BEGIN:VEVENT SUMMARY:DEUTERON ANALYZING POWERS Ay\, Ayy AND Axx IN dp- ELASTIC SCATTERI NG OBTAINED AT JINR-NUCLOTRON DTSTART;VALUE=DATE-TIME:20221202T084500Z DTEND;VALUE=DATE-TIME:20221202T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3201@cern.ch DESCRIPTION:Speakers: Vladimir LADYGIN (VBLHEP\, JINR)\, Nadezhda Ladygina (JINR)\nThe results on the the vector Ay and tensor Ayy and Axx analyzing powers in deuteron-proton elastic scattering at large scattering angles a re presented. These data were obtained at internal target at JINR Nuclotro n in the energy range 400-1800 MeV using polarized deuteron beam from ne w polarized ion source. New data on the deuteron analyzing powers in the w ide energy range demonstrate the sensitivity to the short-range spin struc ture of the isoscalar nucleon-nucleon correlations.\n\nhttps://indico.part icle.mephi.ru/event/275/contributions/3201/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3201/ END:VEVENT BEGIN:VEVENT SUMMARY:Experiment-independent framework for femtoscopic analysis DTSTART;VALUE=DATE-TIME:20221201T161500Z DTEND;VALUE=DATE-TIME:20221201T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3283@cern.ch DESCRIPTION:Speakers: Ekaterina Kuzina (NRNU MEPhI)\nIn high energy physic s\, software infrastructure for the analysis of experimental data is tight ly connected with the specifics of experiment: detector setup\, collision system\, reconstructed event and track information. However\, the aspects of physics analysis are common. In this work\, we present a framework for correlation femtoscopy technique that could be applicable for any experime nt.\n\nIt is developed in an object-oriented paradigm using a combination of software design patterns [1]. As a result\, the polymorphic behavior of the framework encapsulates the data differences\, providing a universal w ay to manage the analysis of any experiment. The additional interface\, ba sed on C++ typecasting features\, allows users to control parameters that are unique for the experiments. C++ language and CERN ROOT libraries are u sed for implementation.\n\n**References:** \n[1] E. Gamma et al. Design P atterns: Elements of Reusable Object-Oriented Software. Reading\, Mass.: A ddison-Wesley\, 1995.\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3283/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3283/ END:VEVENT BEGIN:VEVENT SUMMARY:Presence of dual structure in galaxy clusters from CfA2 Redshift S urvey which reveal high-energy $\\gamma$-associations on Fermi/LAT 12-Year Point Source Catalog 4FGL DR3. DTSTART;VALUE=DATE-TIME:20221201T163700Z DTEND;VALUE=DATE-TIME:20221201T164400Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3416@cern.ch DESCRIPTION:Speakers: Irene ARKHANGELSKAJA (National Research Nuclear Univ ersity MEPhI (Moscow Engineering Physics Institute))\nPreliminary results of the investigation of the properties of 13 clusters of galaxies from CfA 2 redshift survey are discussed in the presented article. The distribution s on absolute magnitude and luminosity represent two areas for clusters ## 88\, 1101\, 1046\, 142\, 933\, 1242\, 1652\, 107\, 150\, 316\, 317\, 961\, 977. Redshifts of these clusters are in the region 0.002 – 0.032. Also several anomalies of spatial dynamic of galaxies in these clusters were se parated. Clusters #933\, #142\, #1046\, #1652 and #316 reveal high-energy $\\gamma$-associations on Fermi/LAT 12-Year Point Source Catalog 4FGL-DR3 (4FGL J1144.9+1937\, 4FGL J0152.2+3714\, 4FGL J1230.8+1223\, 4FGL J1653.8+ 3945 and 4FGL J0708.9+4839). Moreover\, sources 4FGLJ1144.9+1937 and 4FGLJ 1230.8+1223 observed in subTeV energy band by VERITAS data. \nThan we have investigate these systems dynamic using Nonlinear Time Series Analysis. W e have construct phase space for such clusters of galaxies using values of redshift\, coordinates\, magnitude\, absolute magnitude and distance to c entre. As timelike variable we supposed the ratio between galaxies tangent ial velocity and its distance to cluster's centre. Accordingly to prelimin ary results of analysis we have obtained two attractors in the phase space of cluster #88 and ones with presence of high-energy gamma-emission with basins corresponds to bifurcation points on the analyzable distributions. Such results concludes real dual structure of systems being studied. The p resence of such structure allows conclude two alternatives. In the first o ne dark matter presence inside cluster or its the nearest neighbourhood in configuration similar to Zeldovich pancake. Second case is gravitational lensing on compact object or dark matter blob located between galaxy clust er and observer.\nJoint observations of such clusters by orbital gamma-ray observatories with high angular resolution and ground-based Cherenkov air -shower experiments could possibly clarify the type of influence to groups characteristics (gravitational lensing or object inside cluster) and proc esses of particle acceleration in these objects especially highest energy of emitted gammas. Thus we propose including these clusters and similar ob jects in the programs of observations of the planned experiment GAMMA-400 (Gamma Astronomical Multifunctional Modular Apparatus) with angular resolu tion ∼ $\\sim 0.01^o$ at Eγ = 100 GeV and upper energy band boundary ab out several TeV. Also now the coordination of multiwavelength observations program of Cherenkov Telescope Array (CTA) and GAMMA-400 is discussed.\n\ nhttps://indico.particle.mephi.ru/event/275/contributions/3416/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3416/ END:VEVENT BEGIN:VEVENT SUMMARY:Preliminary results of analysis of Ia type events redshift distrib utions on data of the Open and Asiago Supernovae Catalogues DTSTART;VALUE=DATE-TIME:20221201T163000Z DTEND;VALUE=DATE-TIME:20221201T163700Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3119@cern.ch DESCRIPTION:Speakers: Irene ARKHANGELSKAJA (National Research Nuclear Univ ersity MEPhI (Moscow Engineering Physics Institute))\nThe shape of redshif t distribution for uniform sources set in our Metagalaxy defined by cosmol ogical parameters and properties of space. The type Ia supernovae usually considered as a homogeneous subsample because of suggestion that these lum inous events could be used as standard candles for cosmological measuremen ts. This mention occurs since the earliest studies of supernovae in 1938. Firstly the parameters of our Metagalaxy Ω and Λ were determined due sam ple of Ia supernovae from the Supernova Cosmology Project analysis in 1998 . It was found due SN1a characteristics investigation that space in our Me tagalaxy is Euclidean at small redshifts and de-Sitter at high ones. Now s everal tens of thousand supernovae’ characteristics analyzed in new cata logues. The preliminary results of the redshift distribution investigation for SNIa from the Asiago\nSupernova and Open Supernova Catalogues are dis cussed in this work. Firstly it was\nshown that several peculiarities are presented in Ia supernovae redshift distribution in both objects subsample s. The deviation in the band 0.015 \n\nhttps://indico.particle.mephi.ru/ev ent/275/contributions/3119/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3119/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of electroweak $Z(\\nu\\bar{\\nu})\\gamma$ production and limits on anomalous quartic gauge couplings in pp collisions at $\\sqr t(s)=13$ TeV with the ATLAS detector DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3359@cern.ch DESCRIPTION:Speakers: Anastasia Kurova (Moscow MEPhI)\nThe electroweak pro duction of $Z(\\nu\\bar{\\nu})\\gamma$ in association with two jets is stu died in a regime with a photon of high transverse momentum above 150 GeV u sing proton--proton collisions at centre-of-mass energy of 13 TeV at the L arge Hadron Collider. The analysis uses a data sample with an integrated l uminosity of 139 fb$^{-1}$ collected by the ATLAS detector during the 2015 --2018 LHC data taking period. \nThis process is an important probe of the electroweak symmetry breaking mechanism in the Standard Model and is sens itive to quartic gauge boson couplings via vector-boson scattering. The fi ducial $Z(\\nu\\bar{\\nu})\\gamma jj$ cross section for electroweak produc tion is measured to be 0.77$^{+0.34}_{-0.30}$ fb and is consistent with th e Standard Model prediction. \nEvidence for the electroweak $Z(\\nu\\bar{\ \nu})\\gamma jj$ production is found with an observed significance of 3.2$ \\sigma$ in the background-only hypothesis\, compared with an expected sig nificance of 3.7$\\sigma$. \nThe combination of this result with the prev iously published ATLAS observation of electroweak $Z(\\nu\\bar{\\nu})\\gam ma jj$ production yields in an observed (expected) signal significance of 6.3$\\sigma$ (6.6$\\sigma$). Limits on anomalous quartic gauge boson coupl ings are obtained in the framework of effective field theory with dimensio n-eight operators.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3359/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3359/ END:VEVENT BEGIN:VEVENT SUMMARY:MPD TPC alignment DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3380@cern.ch DESCRIPTION:Speakers: Valentin Kuzmin (Moscow State University)\nA method for finding the position of the sectors of the time projection chamber bas ed on experimental data is proposed. Based on the results of modeling the response of the sensitive elements of the camera\, three types of tracks w ere reconstructed: cosmic muons\, beams of the laser detector system and m uons from the interaction of nuclei. Using these artificial experiment dat a and the proposed method of finding the position of sectors\, the accurac y of sector alignment was investigated. For cosmic and laser rays\, the ac curacy is approximately the same. It is ~700 microns for the shift of the origin of the sector and 7 angular minutes for Euler angles. The accuracy in the case of muons born in collisions of nuclei is several times worse.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3380/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3380/ END:VEVENT BEGIN:VEVENT SUMMARY:Radiation damage of SiC detectors irradiated with Xe ions and neut rons DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3375@cern.ch DESCRIPTION:Speakers: Sergey Evseev (JINR)\nThe characteristics of detecto rs made of silicon carbide (SiС) irradiated with various integral fluxes of both Xe ions with an energy of 165 MeV and fast neutrons were studied. With the help of alpha-particles\, it was found that the energy resolution of SiC detectors irradiated with the maximum fluxes of heavy ions ($F_{ma x} = 2.3\\times10^9$ ion/cm$^2$) and neutrons ($F_{max} = 3.4\\times10^{15 }$ n/cm$^2$) deteriorates by an order of magnitude. It was shown that the efficiency of detector charge collection decreases to 2 and 50%\, respecti vely\, upon irradiation with Xe ions and neutrons.\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3375/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3375/ END:VEVENT BEGIN:VEVENT SUMMARY:The search for C-noninvariant decay $\\pi^{0}\\rightarrow3\\gamma$ and the rare decay $\\pi^{0}\\rightarrow4\\gamma$ in NA62 (CERN) experime nt DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3356@cern.ch DESCRIPTION:Speakers: Konstantin Gorshanov (INR RAS)\nThe aim of the poste r is to demonstrate status of the work in estimation of NA62 [1] experimen t sensitivity towards the search for forbidden decay $\\pi^{0}\\rightarrow 3\\gamma$ and rare decay $\\pi^{0}\\rightarrow4\\gamma$. Current branching -ratio upper limit is $3.1\\times10^{-8}\\:(90\\%\\\;\\textrm{C.L.})$ for the $\\pi^{0}\\rightarrow3\\gamma$ decay and $2\\times10^{-8}\\:(90\\%\\\; \\textrm{C.L.})$ for $\\pi^{0}\\rightarrow4\\gamma$ decay established in L os Alamos National Laboratory [2].\n\n$K^{+}\\rightarrow\\pi^{+}\\pi^{0}$ decays were used as a source of $\\pi^{0}$. Selection criteria for events with 3 or 4 products after $\\pi^{0}$ decay in NA62 detector were develope d. NA62 detector and all physical processes were modelled with Monte Carlo method using Geant4. Estimation of experiment sensitivity without backgro und events consideration is 1 order better\, than current upper limit for $\\pi^{0}\\rightarrow3\\gamma$ and $\\pi^{0}\\rightarrow4\\gamma$ decays. Background processes for both decays were studied. Main contribution in b ackground events is $K^{+}\\rightarrow\\pi^{+}\\pi^{0}\, \\pi^{0}\\rightar row2\\gamma$ decay\, when photon interacts with detector\, and $e^{+}e^{-} $ pair is created. Comparison of Monte Carlo simulation and experimental d ata was done. The estimation of number of background events inside signal region was obtained. \n\nLiterature:\n\n1. Cortina Gil E.\, et al. The Bea m and detector of the NA62 experiment at CERN // JINST 2017. V. 12. P05025 \n\n2. McDonough J.\, et al. New searches for the C-noninvariant decay $\\ pi^{0}\\rightarrow3\\gamma$ and the rare decay $\\pi^{0}\\rightarrow4\\gam ma$// Phys. Rev. D 38(1988)\, 2121\n\nhttps://indico.particle.mephi.ru/eve nt/275/contributions/3356/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3356/ END:VEVENT BEGIN:VEVENT SUMMARY:The interaction of dark atoms of dark matter with atomic nuclei DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3413@cern.ch DESCRIPTION:Speakers: Timur Bikbaev (National Research Nuclear University MEPhI )\nThe problem of dark matter particle search is at the frontier of the modern physics. The scenario of composite dark matter\, in which hypot hetical\, stable\, lepton-like particles X having a charge - 2n\, where n is any natural number\, and forming neutral atom-like states of X-helium w ith primary helium nuclei\, called "dark" atoms\, offer a solution to the problem of direct searches for dark matter particles. The solution of the problem is connected with a rigorous proof of the existence of a low-energ y bound state in the interaction of a dark atom with a nucleus\, which req uires a self-consistent description of nuclear attraction and Coulomb repu lsion in such an interaction. As part of our approach\, we use numerical m odeling to describe the dark atom interaction of with nuclei and study the features of such interaction. Considering the classical three-body proble m\, we consistently add the effects of quantum physics to more accurately describe this interaction.\n\nhttps://indico.particle.mephi.ru/event/275/c ontributions/3413/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3413/ END:VEVENT BEGIN:VEVENT SUMMARY:Background analysis in radioneutrino experiments DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3411@cern.ch DESCRIPTION:Speakers: Maria Mikhailova (NRNU MEPhI)\nAstrophysical radio e xperiments in Antarctica and Greenland are designed to search for neutrino s with ultra high energies. The method of their detection is based on the search for Askaryan radio pulses emitted by showers from the interaction o f neutrinos in ice. For these experiments\, it is important to know what p ulsed radio noise may be present in order to distinguish them from rare ne utrino events. And it is also important to understand what contributes to the constant radio background\, because the energy threshold and the effec tive volume of the detectors depend on the noise level. Also a detailed st udy of the radio noise and its nature may allow checking the calibration o f the system.\nThe paper presents the results of studying the sources of r adio noise in experiments at the South Pole. The influence of anthropogeni c activity and periods of strong storms was determined using the data of t he AURA experiment.\nThe contribution of galactic noise\, thermal noise fr om ice\, and electronic noise to the radio background level is analyzed us ing the data of the RNO-G experiment in Greenland.\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3411/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3411/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of dead layer parameters of semiconductor germanium detectors using machine learning for the LEGEND experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3410@cern.ch DESCRIPTION:Speakers: Nikita Levashko (NRC KI)\nThe search for neutrinoles s double beta decay remains today one of the most important areas in parti cle and nuclear physics. Germanium detectors are an excellent technology f or this search because of state-of-the-art energy resolution\, but dead la yers in germanium crystal could potentially harm the energy resolution.\nI n this work\, we used machine learning methods to study the dead layer in enriched germanium crystals. 1000 sets of events were simulated with vario us combinations of dead layer parameters. A fully connected neural network was used to determine these parameters from the energy spectra of a gamma calibration source Ba 133. As a result of training\, this neural network determines the thickness of the dead layer with an accuracy about 0.01 mm and it's fraction with an accuracy about 1%.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3410/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3410/ END:VEVENT BEGIN:VEVENT SUMMARY:Growth of Li2MoO4 scintillating crystals for neutrinoless double b eta-decay search DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3407@cern.ch DESCRIPTION:Speakers: Veronika Grigorieva (aNikolaev Institute of Inorgani c Chemistry\, SB RAS)\nNeutrinoless double beta decay search is one of the most significant tasks in nuclear and elementary particle physics. The de tection of this process will provide information on such fundamental issue s as the absolute neutrino mass scale\, the type of neutrino hierarchy (no rmal or inverse)\, and violation of CP parity in the lepton sector. One of the supposed options is a process involving the emission of majoron  p resumable candidate for dark matter components. Discovery of this process will immediately lead to the discovery of a new elementary particle – th e majoron. All this\, in turn\, will lead to the important consequences in physics and astrophysics. The sensitivity of modern experiments to the ha lf-life of nuclei has been brought to ~ 1025–1026 years [A.S. Barabash\, Int. J. Mod. Phys. A\, 33 (2018) 1843001]. \nOne of the most promising fu ture experiments is the CUPID-Mo [E. Armengaud\, E. Phys. J. C\, 80(1) (20 20) 44]. The CUPID Mo experiment is based on low-temperature scintillating bolometers with Li2100MoO4 crystals as detecting elements. Li2100MoO4 was chosen because of high molybdenum ratio and possibility of enrichment wit h molybdenum-100 (100Mo) isotope.\nThus\, developing techniques for obtain ing large Li2MoO4 crystals of high optical quality becomes an important ta sk in crystal growth field. The extreme rarity of double beta decay impose s strict requirements on crystal scintillators. In addition to the general requirements for scintillators - high optical quality\, light output\, en ergy resolution\, the material must also contain a minimum amount of impur ities and have an ultra-low radiation background. \nAbove listed requireme nts make the low-thermal-gradient Czochralski technique (LTG Cz)\, develop ed at NIIC SB RAS\, a unique technology for growing Li2MoO4 crystals. The method has significant structural differences from the conventional Czochr alski technique\, due to which the temperature gradients inside the heater are reduced by two orders of magnitude\, to values less than 1 deg/cm. Du e to this\, the processes of volatilization of the melt components are sup pressed\, the loss of expensive isotopically enriched molybdenum-100 durin g growth is prevented\, the amount of thermoelastic stresses and defects i n the growing crystal is reduced.\nIn presented work\, an approach for gro wing Li2MoO4 crystals of high optical quality was developed. The approach implied conversion of growth parameters to establish normal growth mechani sm instead of layered one traditionally implemented in LTG Cz. Optimal gro wth parameters were determined based on morphology and defects concentrati on in grown crystals. Reproducible growth of 120 mm long Li2MoO4 crystals was achieved\, and 50 uniform crystals were obtained.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3407/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3407/ END:VEVENT BEGIN:VEVENT SUMMARY:The calibrations of the iDREAM detector DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3405@cern.ch DESCRIPTION:Speakers: Aldiyar Oralbaev (Kurchatov institute)\nThe iDREAM ( industrial Detector of Reactor Antineutrinos for Monitoring) has been deve loped as a prototype of the industrial detector for development reactor mo nitoring methods. The detector has been installed and commissioned at Kali nin NPP (Russia) at 20 m from the 3 GWth reactor core (third unit). The de tector is a scintillator spectrometer. The calibration measurements play a crucial role for the further antineutrino analysis. A unique calibration system has been developed\, which allows positioning a source along a vert ical axis of the detector with a 2 mm precision. The calibrations with gam ma-sources and a source of fast neutrons have been conducted on a regular basis.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3405/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3405/ END:VEVENT BEGIN:VEVENT SUMMARY:New technology for manufacturing scintillation elements for a high ly segmented 3D neutrino detector DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3404@cern.ch DESCRIPTION:Speakers: Angelina Chvirova (The Institute for Nuclear Researc h of the Russian Academy of Sciences)\nTo improve the sensitivity to CP vi olation\, reduce systematic uncertainties\, T2K launched an intensive up grade program that includes the upgrade of the near neutrino detector ND 280. A novel 3D highly granular scintillator detector\, called SuperFGD\, of a mass of about 2 tons will have the full polar angle coverage for c harged particles produced in neutrino interaction\, a low threshold for proton detection and a capability to measure neutrons using time-of-fligh t. It consists of about two million of small optically isolated polystyr ene based plastic scintillator cubes with a 1 cm side. Each cube is read out in three orthogonal directions with wavelength shifting fibers inser ted into three holes and coupled to compact photosensors\, Micro Pixel Ph oton Counters (MPPC). The cubes for SuperFGD detector were made by injec tion molding\, and the holes are drilled using a high-precision machine. The new technology for production of scintillation elements is to develo p a press-form which makes cubes with 3 orthogonal holes. This will sign ificantly improve the geometric parameters of the elements\, such as the d imensions accuracy and the precision of the hole position\, which is extre mely important for assembly of a new SuperFGD type segmented detectors w ith a mass of a few tons. However\, the use of such mold introduces a new challenge of coating the surface of the cubes by an optical reflector. Th e details of new technologies and test results of the first samples of sci ntillation elements will be presented.\n\nhttps://indico.particle.mephi.ru /event/275/contributions/3404/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3404/ END:VEVENT BEGIN:VEVENT SUMMARY:Towards new tests of cosmic-ray correlations with BL Lac type obje cts DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3400@cern.ch DESCRIPTION:Speakers: Maria Kudenko (Physics Department M. V. Lomonosov Mo scow State University\, Institute for Nuclear Research Russian Academy of Science)\nUltra-high energy cosmic rays (UHECR) can be produced in active galaxies\, and directional correlations between them were studied extensiv ely. One puzzling result was the correlations of arrival directions of UHE CR and a particular class of active galactic nuclei\, BL Lacertae type obj ects\, discovered in 2004 with the HiRes stereo data set [1\,2]. If confir med\, this result would definitely mean new physics or very unconventional astrophysics because it implies neutral particles travelling for cosmolog ical distances. However\, the HiRes resolution remains unsurpassed\, and t he hypothesis has not yet been tested with independent data. The original correlations [1] used the catalog [3] which is not complete by any criteri a. Even though statistical methods of analysis were selected to minimize t he associated uncertainties\, random biases still could have affected the result. That’s why it is needed to repeat this analysis with the use of a complete sample of sources. This report is dedicated to the methods used in construction of such a complete and isotropic set of BL Lacs adopted f or future tests of the enigmatic correlations with the new data of the Tel escope Array experiment. \n\n[1] – D. S. Gorbunov\, P. G. Tinyakov\, I. I. Tkachev\, S. V. Troitsky\, arXiv:astro-ph/0406654v1\n\n[2] – HiRes Co llaboration 2005\n\n[3] – M. P. V´eron-Cetty and P. V´eron\, ESO scien tific report (2000)\; M. P. V´eron-Cetty and P. V´eron\, Astron. Astroph ys. 374 (2001) 92.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3400/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3400/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutrino production in blazar radio cores DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3399@cern.ch DESCRIPTION:Speakers: Polina Kivokurtseva (MSU\,INR)\nModels of the origi n of astrophysical neutrinos with energies from TeVs to PeVs are strongly\ nconstrained by multimessenger observations and population studies. Recent results point to statis-\ntically significant associations between these neutrinos and active galactic nuclei (AGN) selected\nby their radio flux o bserved with very-long-baseline interferometry (VLBI). This suggests that the\nneutrinos are produced in central parsecs of blazars\, AGN with relat ivistic jets pointing to the\nobserver. However\, conventional AGN models tend to explain only the highest-energy part of the\nneutrino flux observa tionally associated with blazars. Here we discuss in detail how the neutri nos\ncan be produced in the part of an AGN giving the dominant contributio n to the VLBI radio flux\,\nthe radio core located close to the jet base. Physical conditions there differ both from the immediate\nenvironment of t he central black hole and from the plasma blobs moving along the jet. Requ ired\nneutrino fluxes\, considerably smaller than those of photons\, can b e produced in interactions of\nrelativistic protons\, accelerated closer t o the black hole\, with radiation in the core\n\nhttps://indico.particle.m ephi.ru/event/275/contributions/3399/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3399/ END:VEVENT BEGIN:VEVENT SUMMARY:Hypothetical hot primordial regions in the Universe with abnormall y high metallicity DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3398@cern.ch DESCRIPTION:Speakers: Mohamed El-Kasmi (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute)\, Kashirskoe Shosse 31\, 1 15409 Moscow\, Russia)\nThe study of the thermonuclear reaction rates of n eutrino production in the primordial hot region is essential for understan ding primordial nucleosynthesis in regions formed by primordial density in homogeneities. We considered the thermonuclear reaction rates due to effec ts of electron-positron annihilation\, reactions of weak proton-neutron tr ansitions\, and the production of light nuclides during the early stages o f the universe. It is shown that the major neutrino production channel is electron-positron annihilation at higher temperatures\, which is dominant in comparison to other thermonuclear reaction rates. However\, the reactio n rates slow down as the region cools down due to threshold effects\, a dr op in neutron concentrations\, and electron-positron annihilation. Further more\, a region with an abnormal chemical composition formed.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3398/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3398/ END:VEVENT BEGIN:VEVENT SUMMARY:Analytical fit of distribution function of neutrino in the superno va outer part DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3409@cern.ch DESCRIPTION:Speakers: Eugenia Koptyaeva ()\nAn analytical approximation of the local non-equilibrium distribution function of neutrinos which propag ate spherically symmetric in the core-collapse supernova is obtained. In g eneral\, the fitting formula depends on four parameters but it can be simp lified when the outer part of supernova is considered only. In this part\, two fitting parameters are practically independent on the distance from t he supernova center while the other one parameter is determined by the sup ernova luminosity. The check of this approximation is based on the data on the one-dimensional simulations of the neutrino propagation\, being self- consistent with the supernova explosion hydrodynamics ( Prometheus-Vertex code).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3409/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3409/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for neutrinos from Supernovae on the LVD experiment. DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3408@cern.ch DESCRIPTION:Speakers: Natalia Filimonova ()\nThe paper presents the method ology and analysis of experimental data obtained by a Large Volume Detecto r (LVD) located in the Gran Sasso Laboratory. For 30 years of the experime nt\, a large database has been collected\, on the basis of which a limit h as been set on the frequency of supernova explosions in the Galaxy.\n\nhtt ps://indico.particle.mephi.ru/event/275/contributions/3408/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3408/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of the angular distribution of terrestrial cosmic-ray nuc lei based on EXPACS Code DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3393@cern.ch DESCRIPTION:Speakers: rafik sedrati (Department of Material Sciences\,Facu lty of Science and Technology\,University of SoukAhras)\nCosmic rays are h ighly energetic particles emitted from different galactic and extragalacti c sources.These primary particles propagate through interstellar space unt il they reach the Earth's atmosphere. The number of particles detected on the surface of Earth is not the same depending on the direction viewed in the sky\, it varies with the zenith angle. In this work\, we calculate the angular distribution of cosmic rays nuclei taking into account the influe nce of certain environmental factors such as the altitude and Earth's magn etic field. The results were obtained using the most recent version of the EXPACS code and the latest experimental data.\n\nhttps://indico.particle. mephi.ru/event/275/contributions/3393/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3393/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for Low-Energy Signals from Fast Radio Bursts with the Bore xino Detector DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3392@cern.ch DESCRIPTION:Speakers: Irina Lomskaya (PNPI NRCKI named B.P. Konstantinov)\ nA promising way of studying properties of distant objects and transient s ources in the Universe is exploring neutrino coming from that sources. Suc h transients as Fast Radio Bursts (FRB) are of particular interest for ast roparticle physics. FRB is a millisecond radio transient observed at extra galactic or cosmological distance. Numerous models with a wide variety of physical processes have been proposed to explain the origin of FRBs. Some of these models predict an low-energy neutrino emission from FRB. The most sensitive tool for studying neutrino with energies in the region 250 keV - 10 MeV is the Borexino detector\, a unique 300 t mass low-background sc intillator detector operated in the Gran Sasso Laboratory. \n\nIn the curr ent work the search for signals with visible energies above 250 keV within a time window of ±1000 s centered at the detection time of 42 most inten sive FRBs is described. An alternative approach based on search for specif ic shapes of neutrino-electron scattering spectra in the full exposure dat a of the Borexino detector have also been applied. As a result the stronge st upper limits on the FRB-associated fluences of all flavors neutrino hav e been obtained.\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3392/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3392/ END:VEVENT BEGIN:VEVENT SUMMARY:On moving cosmic unidentified gamma-ray sources DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3396@cern.ch DESCRIPTION:Speakers: Valeriya Verzakova ()\nThe EGRET and Fermi LAT exper iments have revealed a lot of unidentified gamma-ray sources. Moreover\, a significant part of EGRET sources have not been confirmed by the Fermi LA T data. The possibility for the closest to Solar system unidentified gamma -ray sources to be moving in the selestial sphere during the time period b etween the EGRET and Fermi LAT experiments is considered. The nature of su ch gamma-sources might be associated with compact objects of new physics\, such as clumps of dark matter or clusters of primordial black holes. We c onstruct a distribution function of moving sources versus galactic coordin ates and perform a statistical analysis to estimate whether the displaceme nt effect is significant for the unidentified sources which have been foun d in the EGRET and Fermi LAT experiments.\n\nhttps://indico.particle.mephi .ru/event/275/contributions/3396/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3396/ END:VEVENT BEGIN:VEVENT SUMMARY:Optical simulations of the DarkSide-20k Outer Veto DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3387@cern.ch DESCRIPTION:Speakers: Taisiia Smirnova (National Research Centre "Kurchato v Institute")\nThe DarkSide-20k (DS-20k) experiment seeks to directly dete ct dark matter in the form of weakly interacting massive particles (WIMPs) . DS-20k is a two-phase liquid argon (LAr) Time Projection Chamber (TPC) w ith an active volume of 50 tonnes\, which is built in the Outer Veto. The Outer Veto is approximately 650 tonnes of atmospheric argon (AAr) in a mem brane cryostat\, designed to veto cosmogenic neutron backgrounds in the TP C. The Outer Veto will tag cosmogenic neutron backgrounds based on the sig nal that muons or their associated showers may make in it.\n\nThe optical properties of the Outer Veto define its ultimate efficiency for tagging co smogenic signals. To understand the response of the Outer Veto to muons an d optimize its performance\, the effects of various design considerations on the light yield and uniformity of the outer veto are explored.\n\nOptic al simulations were performed with a geant4-based framework.\n\nThe modeli ng was carried out for different options for the number of photosensors an d their position. Cosmic muons were used in the simulation. Different opti ons for the location of the flanges were considered. The light yield was c alculated for each configuration.\n\nAs a result of studying the optical c haracteristics of the Outer Veto\, it was found that light yield varies de pending on several design parameters\, including the number and location o f photosensors and the choice of reflector.\n\nhttps://indico.particle.mep hi.ru/event/275/contributions/3387/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3387/ END:VEVENT BEGIN:VEVENT SUMMARY:Comparison of Geant4 simulation data with hadron shower data in th e PAMELA experiment. DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3386@cern.ch DESCRIPTION:Speakers: Vladislav Alekseev (P. G. Demidov Yaroslavl State Un iversity)\nThe PAMELA electromagnetic calorimeter consists of 44 single-si ded silicon sensor planes interleaved with 22 plates of tungsten absorber. It provides a comprehensive information about spatial development of hadr onic showers\, and about deposited energy amount.\n\nIn this work\, Monte Carlo simulations (based on Geant4) performed using different available mo dels\, including Fritiof (FTF) and Quark Gluon String (QGS) models of high energy hadron–nucleus interactions with Li\\~ege (INCL) and Bertini (BE RT) intranuclear cascade models. We compared various hadronic shower param eters of simulated data with the data obtained during PAMELA experiment. T hese parameters describe energy release in the calorimeter\, longitudal pr ofile\, position of the shower maximum etc.\n\nhttps://indico.particle.mep hi.ru/event/275/contributions/3386/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3386/ END:VEVENT BEGIN:VEVENT SUMMARY:Project of a compact muon hodoscope for muonography of various obj ects. DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3385@cern.ch DESCRIPTION:Speakers: Maxim Tselinenko (National Research Nuclear Universi ty MEPhI)\nProject of a compact muon hodoscope for muonography of various objects.\n\nTselinenko M. Yu.1\, Kompaniets K. G1\, Pasiuk N. A.1\, Shuten ko V.V.1\, Yashin I. I.1\n\n1NRNU MEPhI\, Russia\, Moscow\, MYTselinenko@m ephi.ru\n\nReport Type: Poster.\n\nAt present\, the method of muonography (by analogy with X-ray diffraction radiography) of the internal structure of various natural and artificial objects using the natural flux of cosmic ray muons has become widespread.\n\nTo implement the method\, in the Expe rimental complex NEVOD (NRNU MEPhI) R&D research to develop a compact and precise muon hodoscope (CMH) started in the SEC NEVOD (NRNU MEPhI). The de sign of the horoscope is a multichannel detecting system consisting of fou r coordinate planes (CP) with an area of 1 m2. Each CP includes two detect ing layers with orthogonal orientation of scintillation strips. Each layer is formed from an assembly of 96 scintillation strips with light collecti on by WLS fibers (fibers) to silicon photomultipliers (SiPM). 32 SiPM sign als are transmitted to an electronic readout board based on a 32-channel A SIC CITIROC 1A. Two layers of 96 strips with orthogonal orientation are co mbined in a single body of aluminum sheets.\n\nThe report discusses the fe atures of CMH's detection system\, as well as the results of testing a tri al batch of scintillation strips and a trial batch of SIPM at the stands o f SEC NEVOD.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3 385/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3385/ END:VEVENT BEGIN:VEVENT SUMMARY:Technique for detecting high-energy electrons and positrons by mea ns of synchrotron radiation in the Earth's magnetic field DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3394@cern.ch DESCRIPTION:Speakers: Alexandr Stuzhin ()\nThe anomalous effect discovered in the PAMELA experiment[1] and confirmed by subsequent cosmic ray experi ments consists in a sharp increase of the fraction of galactic positrons o ver much of energy range 1.5 - 100 GeV\, which contradicts theoretical pre dictions. To study this effect\, a new experiment for detecting high-energ y electrons and positrons using synchrotron radiation in the geomagnetic f ield was proposed[2].\n\nIn this work\, we simulated the operation of a de tector for different satellite orbits and orientations. The counting rate of the detector located in the polar orbits at an altitude of 400 km above the Earth's surface for positrons in the energy range 1 - 10 TeV has been estimated.\n\n\n[1] O. Adriani\, G. C. Barbarino\, G. A. Bazilevskaya // An anomalous\npositron abundance in cosmic rays with energies 1.5–100 Ge V // Nature\,\n2 April 2009.\n\n[2] A. M. Galper\, S. V. Koldashov\, V. V. Mikhailov and O. F. Prilutskii // High energy positron detection via sync hrotron emission in magnetosphere // Journal of Physics: Conference Series \, Volume 798\, International Conference on Particle Physics and Astrophys ics\, 10–14 October 2016.\n\nhttps://indico.particle.mephi.ru/event/275/ contributions/3394/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3394/ END:VEVENT BEGIN:VEVENT SUMMARY:THE ELECTRON STRING ION SOURCE KRION 6T ELECTRONICS AND CONTROL SY STEM DEVELOPMENT DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3383@cern.ch DESCRIPTION:Speakers: Elizaveta Butenko (JINR)\nThe Electron String Ion So urce (ESIS) is a relatively novel type of ion source\, which is under deve lopment since 1994\, when the electron string phenomenon was first observe d. ESIS is a sophisticated modification of Electron Beam Ion Source (EBIS) working in a reflex mode of operation under specific conditions\, the ope ration is based on step-by-step ionization of the ions by hitting with ele ctrons of an electron string.\nESIS is a complex facility\, so the electro nic control system is crucial.\nGlobally\, the KRION 6T source electronics systems can be divided into two parts – the slow control system and the ion motion control system. The slow control system combines the following monitoring and control elements: the electron gun and the ions extractor\ ; the magnetic optics\; vacuum and temperature monitoring\; the locking sy stem\; the beam diagnostic.\nThe basis of ionization process in ESIS is an electron beam produced by the cathode electronics assembly.\nThe new cath ode electronics assembly contains several interesting electronic modules w hich are designed by the JINR NICA accelerator division engineers.\nThe to pic describes the ESIS electronics development\, production and operation process.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3383/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3383/ END:VEVENT BEGIN:VEVENT SUMMARY:Machine learning applications for particle identification in MPD DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3382@cern.ch DESCRIPTION:Speakers: Vladimir Papoyan (JINR)\nMachine Learning methods ar e proposed to be used for particle identification (PID) in more and more e xperiments at high energy physics nowadays. Particle identification plays an important role in high-energy physics analysis therefore determines the success of performing an experiment. This determines the importance of us ing machine learning to improve particle identification in the regions whe re conventional methods fail to provide good identification. This report g ives first tests of machine learning methods applications using gradient boosting on decision trees to particle identification problem in MPD expe riment.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3382/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3382/ END:VEVENT BEGIN:VEVENT SUMMARY:Control facilities for the Fast Interaction Trigger detector in th e ALICE experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3381@cern.ch DESCRIPTION:Speakers: Mikhail Sukhanov (INR)\nALICE has installed four new detectors during a three-year upgrade preceding the just-started LHC Run 3. One of them is Fast Interaction Trigger (FIT). It consists of three sub detectors: FT0\, FV0 and FDD. The uniformity of subdetectors’ front-end electronics (FEE)\, HV system and infrastructure allowed us to develop a u nified approach to control its parameters. Here we describe the implementa tion of the FIT detector control facilities represented by two types of so ftware. The first one\, based on the SCADA system WinCC OA\, provides HV c ontrol and detector infrastructure integration into the ALICE Detector Con trol System (DCS). The second is an application that binds FEE and the Win CC OA and provides an independent graphical user interface for electronics tuning. The experience gained during the first year of FIT operation give s us the understanding to implement further improvements to the control sy stem.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3381/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3381/ END:VEVENT BEGIN:VEVENT SUMMARY:Beam composition analysis using a single shashlik-type calorimetry module DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3379@cern.ch DESCRIPTION:Speakers: Roman Shorkin (NUST "MISIS")\nThe upcoming LHCb calo rimetry upgrade\, aimed to allow LHCb detectors to operate with higher lum inosity\, implies significant hardware modifications to the present ECAL. These changes include replacement of the current shashlik-type modules wit h spaghetti-type for the inner part\, upgrade of the shashlik modules to i mprove time resolution and possible removal/modification of the HCAL (Hadr on Calorimeter). Such changes require detailed studies including the test beam campaign with electron and hadron beams of different energies.\nThis talk presents the results of the hadron beam particle composition analysis performed at H8 testbeam line in August 2021. The analysis is based on th e data recorded with a standard single-cell LHCb ECAL module\, threshold C herenkov detector and tracking system based on three DWC (delay-wire chamb er) stations.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3379/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3379/ END:VEVENT BEGIN:VEVENT SUMMARY:The time synchronization of the ALICE Fast Interaction Trigger det ector DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3376@cern.ch DESCRIPTION:Speakers: Dmitry Finogeev ()\nThe Fast Interaction Trigger (FI T) is used as an interaction trigger\, luminometer\, the first indicator o f the vertex position\, and the forward multiplicity counter of the ALICE experiment at CERN during Run 3 of the LHC. The FIT consists of three subs ystems: FT0 – a set of two fast Cherenkov arrays\, FV0 – a large segme nted scintillator disk and FDD (Forward Diffractive Detector) – also a s cintillator located at very high pseudorapidity. All three subsystems (FT0 \, FV0 and FDD) use a single design of the front-end electronics with CFD\ , TDC and ADC parts. The collected data is processed in FPGA. Hit time mea surements are done relative to the LHC high-quality clock with a time reso lution of ~50ps. FIT FEE connected to ALICE DAQ with GBT links for timesta mps distribution and measured data sending. The time synchronization conce pt of the FIT detector with ALICE DAQ\, clock drift compensation mechanism and time alignment procedure will be shown.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3376/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3376/ END:VEVENT BEGIN:VEVENT SUMMARY:Online monitoring of the forward detectors of the BM@N experiment with Xe beam DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3372@cern.ch DESCRIPTION:Speakers: Aleksandr Zubankov (Institute for Nuclear Research o f the Russian Academy of Sciences)\nThe BM@N (Baryonic Matter at Nuclotron ) is the first running experiment at the NICA accelerator complex and is a imed at studying the QCD diagram at high baryon densities. The forward det ectors of the BM@N experiment are the forward hadron calorimeter\, scintil lation wall and quartz hodoscope. The forward detectors are used to determ ine the centrality and orientation of the reaction plane\, and to study th e charge distributions of spectator fragments formed in nucleus-nucleus in teractions. The online real-time monitoring system recently developed for the forward detectors is discussed.\n\nhttps://indico.particle.mephi.ru/ev ent/275/contributions/3372/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3372/ END:VEVENT BEGIN:VEVENT SUMMARY:The Tunka-Grande array simulations for the primary cosmic rays ide ntification – status and prospects DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3371@cern.ch DESCRIPTION:Speakers: Mark Ternovoy (API ISU)\nThe Tunka-Grande scintillat ion array is a part of the TAIGA experimental complex\, located in the Tun ka Valley (Buryatia Republic\, Russia). The array is intended to study the energy spectrum and the mass composition of charged cosmic rays and searc h for diffuse gamma rays above 10 PeV by detecting charged components of e xtensive air showers. This report describes the current state of the array simulations based on the CORSIKA and Geant4 toolkits\, as well as some of the results obtained from the simulations. We also present future prospec ts for the Tunka-Grande simulations in the context of measurement of the p rimary mass composition in the 10 - 1000 PeV energy range.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3371/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3371/ END:VEVENT BEGIN:VEVENT SUMMARY:Estimation of the influence of the electric field nonuniformity on the error of reconstructed coordinates of events in the ReD TPC DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3370@cern.ch DESCRIPTION:Speakers: Grigory Dolganov (NRC «Kurchatov Institute»)\nOne of the most actual questions of particle physics and cosmology today is th e nature of Dark Matter. Experiments on the direct search for dark matter particles are aimed to direct detection of Weakly Interaction Massive Part icles (WIMP) or obtaining constraints on their space of mass parameters an d spin-independent interaction cross sections.\n\nFor WIMPs (from a few Ge V/c$^2$ to TeV/c$^2$) searches\, the best results are shown by the noble l iquid time projection chambers (TPCs). The signal in the LAr TPC is observ ed both from excitation\, which results in a direct scintillation\, and fr om ionization of argon. Electrons that have not recombined after ionizatio n are drifted in the applied electric field towards the liquid surface\, a nd after extracted into the gas phase. In the so-called gas pocket\, elect rons\, further accelerated by a stronger electric field\, excite the gas a toms and produce a secondary scintillation via electroluminescence. Intera ction parameters and coordinates of the events inside TPC are reconstructe d using both primary scintillation in liquid argon and electroluminescence scintillation in the gas pocket.\n\nIn this study simulations of electron drift and electron cloud diffusion were performed for the TPC of the ReD experiment\, which aimed at nuclear recoil studies in a neutron beam at th e INFN Laboratori Nazionali del Sud in Catania. The results of the evaluat ion of the influence of the electric field nonuniformity on the charge acc umulation on the detector chamber walls and the error of the reconstructed coordinates of events are presented in the talk.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3370/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3370/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation studies of the beam monitor for the CSR external-target experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3369@cern.ch DESCRIPTION:Speakers: Fei Yan (Central China Normal University)\, Zhen Wan g ( Guizhou Normal University)\nA gaseous beam monitor is being developed for the CSR external-target experiment (CEE) at HIRFL. The requirements on the beam particle rate of up to $10^{6}$ pps and the per-particle positio n resolution of better than 50 $\\mu$m pose challenge on the detector desi gn. The beam monitor mainly consists of two drift chambers\, each measurin g a 1D position of the beam particle transverse to the beam direction. The detector simulation has been carried out to optimize the geometrical set- up\, to evaluate the expected performance\, and to calculate the requireme nts on the custom-designed charge sensor. We will present the simulation s tudies of the beam monitor\, which is mainly based on the Geant4\, Garfiel d++ and COMSOL softwares. A preliminary study of the space charge effect d ue to the beam particles will also be discussed.\n\nhttps://indico.particl e.mephi.ru/event/275/contributions/3369/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3369/ END:VEVENT BEGIN:VEVENT SUMMARY:The possibility of finding the P-symmetry breaking decay of the ch arged a0 meson DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3360@cern.ch DESCRIPTION:Speakers: Vitalii Petrov (St Petersburg State University (RU)) \nThe spatial parity (P) violation in strong interactions have never been observed experimentally. One can include a P-breaking term in the QCD la grangian. Thus\, there can be a local violation of P-symmetry in the mediu m with hight temperature and large topological fluctuations [1]. As a cons equence\, some hadrons would decay in channels that forbidden by the globa l parity conservation [2]. In this work we investigate the possibility of observing such process: decay of a charged $a_0$ meson into charged pion a nd photon [3]. We study an invariant-mass spectrum of $\\pi^\\pm - \\gamma $ pairs produced in PYTHIA Monte Carlo generator with enabled $a_0^\\pm \\ rightarrow \\pi^\\pm + \\gamma$ decay channel. To distinguish the peak of mentioned decay from the background the mixed-event substracting\, kinemat ic cuts and Dalitz plots analysis was used. As a result we have estimated minimal number of pp collision events for signifacant signal of the P-brea king decay.\n\nThe study was funded by the Russian Science Foundation gran t No.\n22-22-00493\,\nhttps://rscf.ru/en/project/22-22-00493/\n\nReference s:\n\n[1] D. Kharzeev\, Annals of Physics\, 325\, 1. 205 – 218 (2010).\n \n[2] A.Andrianov\, D.Espriu and X.Planells\, Eur. Phys.J. C73 (2013) no.1 \, 2294\n\n[3] A. Andrianov et al\, EPJ Web of Conferences 158\, 03012 (20 17).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3360/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3360/ END:VEVENT BEGIN:VEVENT SUMMARY:Machine learning approach in event position reconstruction in DEAP -3600 dark matter search experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3361@cern.ch DESCRIPTION:Speakers: Aidar Ilyasov (NRNU "MEPhI"\, NRC "Kurchatov Institu te")\nIn addition to classical analytical data processing methods\, machin e learning methods are widely used for data analysis in elementary particl e physics. Most often such techniques are used to identify a particular cl ass of events (the classification problem) or to predict a certain event p arameter (the regression problem). Here we present the result of using a m achine learning model to solve the regression problem of event position re construction in the DEAP-3600 dark matter search detector. Several machine learning algorithms have been tested on Monte Carlo simulation data and c ompared with analytical models. The results suggest that this technique ca n be used in conjunction with the analytical models to improve the quality of the reconstruction.\n\nhttps://indico.particle.mephi.ru/event/275/cont ributions/3361/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3361/ END:VEVENT BEGIN:VEVENT SUMMARY:The estimation of the background induced by the misidentification of a jet as a photon by slice method at pp collider experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3357@cern.ch DESCRIPTION:Speakers: Katerina Kazakova (NRNU MEPhI)\nThe background induc ed by misidentification of a jet as a photon ($jet\\rightarrow\\gamma$) is usually estimated using two-dimensional sideband method (ABCD-method) in collider experiments. This report is devoted to an alternative "slice meth od" of the estimation based on likelihood fit of $jet\\rightarrow\\gamma$\ , signal and other background yields using kinematic distributions in a ph ase-space region with relaxed requirements on corresponding variables. Thi s method does not require optimization of regions definition\, which resul ts in much faster estimation. One of the main advantages of the considered method is that it takes into account data\, signal and all other backgrou nds distributions. It also takes into account the dependency on isolation. Both of these factors allow better estimation accuracy. The estimates of the considered method are confirmed by the standard ABCD-method.\n\nhttps: //indico.particle.mephi.ru/event/275/contributions/3357/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3357/ END:VEVENT BEGIN:VEVENT SUMMARY:Research and development of highly efficient liquid scintillators for large-scale neutrino experiments DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3355@cern.ch DESCRIPTION:Speakers: Andrei Sidorenkov (INR RAS)\nLiquid scintillators ha ve always been an important part of many experiments in neutrino physics. Currently\, the so called “standard” liquid scintillator consisting of linear alkylbenzene (LAB)\, 2\,5-diphenyloxazole (PPO) and 1\,4-Bis(2-met hylstyryl)benzene (bis -MSB) is used in many experiments. As an alternativ e to the “standard” LAB-based liquid scintillator\, a new highly effic ient liquid scintillator with organosilicon scintillation fluor\, so calle d NOL (Nanostructured Organosilicon Luminophore)\, was proposed and develo ped. The light yield and emission kinetics of the new LAB-based scintillat or with NOL fluor have been extensively characterized and studied. The lig ht yield of the developed liquid scintillator is almost two times higher t han that of traditional LAB-based liquid scintillator with PPO fluor. The fastest decay time constant of the emission kinetics is in the range of ab out 9 to 14 ns\, depending on the fluor concentration\, and the contributi on of the fastest component accounts for 80% of the total light yield. The scintillation parameters have also good long-term stability. The develope d liquid scintillators based on LAB and NOL are planned to be used in a pr ototype of Baksan Large Neutrino Telescope\, which is proposed to be const ructed at the Baksan Neutrino Observatory.\n\nhttps://indico.particle.meph i.ru/event/275/contributions/3355/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3355/ END:VEVENT BEGIN:VEVENT SUMMARY:SuperNova Early Warning System v2.0 DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3354@cern.ch DESCRIPTION:Speakers: Andrey Sheshukov (Joint Institute for Nuclear Resear ch\, JINR)\nIn the early stages of the core-collapse supernova a prominent amount of neutrinos is emitted in a short burst on a ~10s time scale. \nS ince the neutrinos can escape the medium of the collapsing star without in teraction\, such signal can be detected by the neutrino experiments severa l hours before the observable optical signals.\n\nSuperNova Early Warning System (SNEWS) is an international network of neutrino experiments\, aimin g at the real-time search for a supernova neutrino signal for providing th e early warning of galactic supernova.\nThis system has been operating sin ce 1998\, providing an automatic server in a simple coincidence mode sendi ng an alert when two detectors register an excess of events within a certa in time window. \n\nWe report the status of an ongoing major upgrade of th e SNEWS system\, which includes studying possible neutrino signals\, apply ing more advanced coincidence techniques\, accounting for directional info rmation and a search for pre-supernova neutrino signal.\n\nhttps://indico. particle.mephi.ru/event/275/contributions/3354/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3354/ END:VEVENT BEGIN:VEVENT SUMMARY:On estimates of long-range kink-antikink forces DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3347@cern.ch DESCRIPTION:Speakers: Petr Blinov (Moscow Institute of Physics and Technol ogy)\nWe obtain estimates for the kink-antikink force of interaction. We c onsider the case of kinks with power-law asymptotics\, which is used\, in particular\, to model thick domain walls. We use a method based on a speci al type of field approximation between a kink and an antikink.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3347/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3347/ END:VEVENT BEGIN:VEVENT SUMMARY:Relativistic corrections to the Higgs boson decay into a pair of v ector quarkonia DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3348@cern.ch DESCRIPTION:Speakers: Fedor Martynenko (Samara University)\nRare decay pro cess of the Higgs boson into a pair of $J/\\Psi$ and a pair of $\\Upsilon$ mesons is studied within perturbative Standard Model and relativistic qua rk model. Relativistic corrections to the production amplitudes\, connecte d with the relative motion of heavy quarks\, are calculated. Different dec ay mechanisms are studied. Numerical values of the decay widths of the Hig gs boson are obtained\, which can be used for comparison with experimental data.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3348/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3348/ END:VEVENT BEGIN:VEVENT SUMMARY:Isomeric ratio for the pair 85m\,gSr formed in natSr(γ\,xn) DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3343@cern.ch DESCRIPTION:Speakers: Fazilat Rasulova (Institute of Nuclear Physics of AS RUz)\nThe aim of the present work was to measure the yield ratios of the 85m\,gSr produced in the natSr(γ\,xn) reactions with bremsstrahlung end-p oint energy 55 MeV. The study examined the possibility of producing 85Sr i sotope in photonuclear reactions on a natural mixture of strontium isotope s. The radionuclide 85Sr has decay parameters such as half-life and photo n energies suitable for the nuclear medical applications. So far\, it has been widely used in the scanning of suspected bone disease. Usually\, the 85Sr is produced through the 85Rb(p\,n) nuclear reaction. The investigated multiparticle photonuclear reactions natSr(γ\,xn)85m\,gSr can also be co nsidered as part of a complementary method for the production of the 85Sr medical isotope. The yields of the target nuclide 85m\,gSr were measured a s a result of natSr(γ\, xn) reactions. The isomeric ratio is obtained for 85m\,gSr. The value found for this isomeric ratio is compared with the re sults of other studies and with the results of calculations based on TALYS -1.96.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3343/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3343/ END:VEVENT BEGIN:VEVENT SUMMARY:Light concentrators for large-volume detector at the Baksan Neutri no Observatory DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3353@cern.ch DESCRIPTION:Speakers: Almaz Fazliakhmetov (INR RAS\, Kurchatov Institute\, MIPT)\nAt the Baksan Neutrino Observatory deployed in the North Caucasus mountains\, it is proposed to develop\, at a depth corresponding to about 4700 mwe\, a large-volume neutrino detector based on a liquid scintillator with a target mass of 10 kt. The main physics goals of the detector are l ow-energy neutrino physics\, astrophysics and geophysics. The highest poss ible light yield is crucial for such detectors. To improve light yield and energy resolution in large-volume neutrino detectors\, light concentrator s are often mounted on photomultiplier tubes to increase the detection eff iciency of optical photons from scintillation or Cherenkov light induced b y charged particles. We present the results of recent R&D work aimed to de velop light concentrators for the Baksan large-volume liquid scintillator neutrino detector.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3353/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3353/ END:VEVENT BEGIN:VEVENT SUMMARY:Scintillation experiment on the study of cosmic rays and gamma-qua nta fluxes in the Tunka Valley DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3403@cern.ch DESCRIPTION:Speakers: Anna Ivanova (NSU&ISU)\nA scintillation experiment i s a part of the TAIGA astrophysical complex located in the Tunka Valley\, 50 km from Lake Baikal. It consists of the Tunka-Grande and TAIGA-Muon arr ays. Its scientific program is devoted to the study of cosmic rays (CRs) a nd search for astrophysical gamma rays by detecting charged particles (ele ctrons and muons) of extensive air showers (EASs).\nWe present the current status of the scintillation experiment\, methods of EAS and CR parameters reconstruction\, the main results obtained by the Tunka-Grande array and our scientific program for the future.\n\nhttps://indico.particle.mephi.ru /event/275/contributions/3403/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3403/ END:VEVENT BEGIN:VEVENT SUMMARY:PHOTONUCLEAR REACTIONS ON NATURAL MIXTURE OF SELENIUM DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3340@cern.ch DESCRIPTION:Speakers: Fazilat Rasulova (Institute of Nuclear Physics of AS RUz)\nThe method of induced activity was used to study photonuclear react ions on a natural mixture of selenium isotopes. This study measured the yi elds of the radionuclides 73(m+g)Se\, 75Se\, 79mSe\, 81(m+g)Se\, 71As\, 72 As\, 74As\, 76As\, 77As\, 78As\, and 79As produced in natSe(γ\, xnyp) mul tiparticle reactions with bremsstrahlung end-point energy of 55 MeV. The b remsstrahlung radiation was generated using the RM-55 electron accelerator at at the Skobeltsyn Institute of Nuclear Physics\, Lomonosov Moscow Stat e University\, Russia\, and the reaction yields were derived from the indu ced activities measured using off-line γ-ray spectrometry. The measuremen t of the production yields for the radionuclides produced in the photoprot on reactions on natural selenium is the first of its kind. The experimenta lly obtained yields of photonuclear reactions are compared with the yields calculated using theoretical cross-sections of photonuclear reactions fro m CMPR and the TALYS program. On the whole\, we can see a satisfactory agr eement between the experimental yields and the theoretical calculations. T he difference in values can be due to two main factors: TALYS uses default photoabsorption cross-sections\, and also does not take into account the isospin splitting of the giant dipole resonance\, which has a significant effect on the yields of photoproton reactions. There is a good agreement b etween the experimental data and the results of calculations by the CMPR m ethod for both photoneutron and photoproton reactions.\n\nhttps://indico.p article.mephi.ru/event/275/contributions/3340/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3340/ END:VEVENT BEGIN:VEVENT SUMMARY:Pentaquarks Production in Weak Decays of Bottom Baryons DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3344@cern.ch DESCRIPTION:Speakers: Millena Voronenko (P.G. Demidov Yaroslavl State Univ ersity)\nAt present\, production\, properties\, and decays of heavy baryon s are intensively studied both experimentally and theoretically. The $SU(3 )$ flavor symmetry allows an existence of a large number of hidden charm p entaquark states which differ in their light quark content. Here\, ratios of weak decay width of bottom baryons into a pentaquark and light meson ar e presented. The most interesting for experimental observation decays of b ottom baryons are specified.\n\nhttps://indico.particle.mephi.ru/event/275 /contributions/3344/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3344/ END:VEVENT BEGIN:VEVENT SUMMARY:Kink solutions in a family of polynomial models DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3345@cern.ch DESCRIPTION:Speakers: Alexander Malnev (Moscow Institute of Physics and Te chnology)\nWe obtain kink solutions for a family of field-theoretic models with polynomial self-interaction of a real scalar field. These solutions have power-law asymptotics\, and hence can be used for modelling of the so -called thick domain walls (among other applications). We also study vario us properties of the obtained solutions.\n\nhttps://indico.particle.mephi. ru/event/275/contributions/3345/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3345/ END:VEVENT BEGIN:VEVENT SUMMARY:THE ${\\rm^{27}Al}({\\rm^{3}He}\,{\\rm^{}d}){\\rm^{28}Si}$ REACTIO N MECHANISMS AND ANC FOR THE ${\\rm^{28}Si}\\rightarrow {\\rm^{27}Al+p}$ CONFIGURATIONS DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3338@cern.ch DESCRIPTION:Speakers: E Ruziev (Institute of Nuclear Physics\, AS RUz\, Ta shkent\, Uzbekistan\;)\nThe study of the proton transfer process during th e interaction of accelerated nuclei with light nuclei near the Coulomb bar rier is of great interest for astrophysics\, since the information obtaine d from the analysis of such reactions makes it possible to estimate the as trophysical S-factors of the radiative capture of protons at very low ener gies\, where direct measurements are impossible.\nFor example\, from the a nalysis of the ${\\rm^{27}Al}({\\rm^{3}He}\,{\\rm^{}d}){\\rm^{28}Si}$ rea ction\, one can extract the squared ANCs $C\\rm^{2}({\\rm^{28}Si}\\rightar row {\\rm^{27}Al+p})={C\\rm^{2}_{271}}$ of the overlap functions ${\\rm^{ 28}Si}\\rightarrow {\\rm^{27}Al+p}$ for all proton bound states in the ${\ \rm^{28}Si}$ nucleus. It allows one to calculate the direct part of the as trophysical S-factor for the ${\\rm^{27}Al}({\\rm^{}p}\,{\\rm^{}\\gamma}){ \\rm^{28}Si}$ reaction The excitation energies of the ${\\rm^{28}Si\\rm^*} $ nucleus are high when a proton is captured ($s_p=11.585 MeV$)\, and seve ral resonances contribute to the total S-factor when even a low-energy pro ton is captured. At the same time\, in order to calculate the contribution of the direct process to the total astrophysical S-factor of the ${\\rm^{ 27}Al}({\\rm^{}p}\,{\\rm^{}\\gamma}){\\rm^{28}Si}$ reaction\, in reality i t is possible to take into account the ANC values only for strongly excite d proton bound states in the ${\\rm^{28}Si\\rm^*}$ nucleus.\nAt that\, in order to evalulate the contribution of the direct process to the total ast rophysical S-factor of the ${\\rm^{27}Al}({\\rm^{}p}\,{\\rm^{}\\gamma}){\\ rm^{28}Si}$ reaction\, in reality it is possible to take into account the ANC values only for strongly excited proton bound states in the ${\\rm^{28 }Si\\rm^*}$ nucleus.\nTo extract the ANC values of the proton bond in the ground ($0\\rm^+$) and excited (E=1.778 MeV\, $2\\rm^+$)\, (E=4.618 MeV\, $4\\rm^+$) states of the ${\\rm^{28}Si}$ nucleus from the angular distribu tions of the DCS of proton transfer reactions \n(${\\rm^{3}He}\,{\\rm^{}d} $)\, we performed analysis of these data within the framework of the DWBA. .\nAn analysis of the experimental DCS of the ${\\rm^{27}Al}({\\rm^{3}He}\ ,{\\rm^{}d}){\\rm^{28}Si}$ reaction at the energies E=25 MeV [1] and 37.7 MeV [2] in the frameworks of modified DWBA was made. The ANC values for th e ground and excited states of ${\\rm^{28}Si}$ were obtained. Selection of sets of the optical model parameters for the input and output channels of these reactions was performed using literature data\, including the recom mended OP given in the papers with the corresponding experimental data.\n\ nReferences:\n1. J. Vernotte\, et al. Nuclear Physics A571 ( 1994).\n2. R. W. Barnard et al. Nuclear Physics A108 (1968).\n\nhttps://indico.particle. mephi.ru/event/275/contributions/3338/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3338/ END:VEVENT BEGIN:VEVENT SUMMARY:Estimation of longitudinal momentum distributions of exotic nuclei in the fragmentation reaction from 10 to 50 MeV/nucleon DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3337@cern.ch DESCRIPTION:Speakers: Arailym Ismailova (Al-Farabi Kazakh National Univers ity)\nThe current level of development of experimental facilities makes it possible to conduct studies of both relatively long-lived nuclei forming the valley of stability and exotic nuclei lying outside this region. The p roduction of exotic nuclei is a rather difficult task\, one of the solutio ns of which was the using radioactive isotopes beams accelerated to energi es above the Coulomb interaction barrier in the experiments.\n\nTo obtain beams of radioactive isotopes\, the In-Flight method\, in which radioactiv e isotopes are obtained in fragmentation reactions is currently widely use d. Beams of radioactive isotopes are formed using fragment separators. The efficiency of the fragment separator depends on the relative yield and mo mentum distributions of radioactive isotopes. In this regard\, predictive calculations of these characteristics are of particular importance. Despit e the fact that the yields and momentum distributions of radioactive isoto pes in fragmentation reactions have become the subject of systematic studi es for high and medium energies (more than 100 MeV per nucleon)\, In-Fligh t complexes for the production of radioactive beams work not only at high\ , but also at low energies. However\, there are no detailed studies of fra gmentation reactions for low energies (from 10 MeV per nucleon). Thus\, it is important to investigate both the fragmentation mechanism itself and i ts features at low energies\, and it is also important to develop a method for evaluating various characteristics of fragmentation products.\n\nIn t his work the primary results of estimating the longitudinal momentum distr ibutions of fragmentation reaction products in the energy range from 10 to 50 MeV/nucleon are presented.\n\nhttps://indico.particle.mephi.ru/event/2 75/contributions/3337/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3337/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of the radii of states in the 11-14 MeV excitation r egion in the 9Be nucleus DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3334@cern.ch DESCRIPTION:Speakers: Viktar Starastsin (National Research Center «Kurcha tov Institute»)\nThe angular distributions for the 11.28 (7/2+)\, 11.82 ( 9/2-)\, and 13.79 (7/2-) MeV states were obtained and analyzed from the sc attering of light particles by the 9Be nucleus.[1\,2]. The MDM method was used to estimate the radii [3]. The resulting diffraction radius of the 11 .82 MeV state turned out to be equal to the radius of the ground state. Th is indicates that the root-mean-square radius of this state is ordinary. F or the 11.28 MeV and 13.79 MeV states\, the diffraction radii turned out t o be increased\, which indicates increased root-mean-square radii for thes e states. \nOn the basis of the obtained radii and certain spin-parity val ues (rule J(J+1) [4]) of the states 11.82\, 11.28\, and 13.79\, it was pos sible to assign them to the first\, second\, and third bands of the 9Be nu cleus\, respectively.\n\n\n[1] A.S. Demyanova et al.\, EPJ Web of Conferen ces 66 02026 (2014)\n\n[2] A.S. Demyanova et al.\, JETP Lett. 104 (5) 289- 292 (2016)\n\n[3] A.N. Danilov et al.\, Phys. Rev. C 80\, 054603 (2009)\n\ n[4] V.I. Starastsin et al.\, EPJ A 57\, 334 (2021)\n\nhttps://indico.part icle.mephi.ru/event/275/contributions/3334/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3334/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the K+ ==> pi0 mu+ nu gamma decay with OKA setup DTSTART;VALUE=DATE-TIME:20221130T170500Z DTEND;VALUE=DATE-TIME:20221130T172000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3322@cern.ch DESCRIPTION:Speakers: Ilia Tiurin ()\nThe K+ ==> pi0 mu+ nu gamma (Km3g) d ecay has been measured\nwith OKA setup at the RF-separated 17.7 GeV/c mome ntum kaon beam\nof the U-70 accelerater. The data was collected in two run in 2012-2013 yrs.\nand corresponds to the flux of 2.62e+10 "live" kaons e ntering the decay volume.\nMore than 900 signal events were found in the " standard" Particle Data\nGroup (PDG) region of 30-60 MeV energy of the emi tted photon in the rest frame\nof the decaing kaon. Using 4.48e+06 events sample of normalization decay\nK+ ==> pi0 mu+ nu (Km3)\, the branching rat io B(km3g)/B(km3) was found to be\n(4.49+/-0.37(stat))e-4. This value can be transformed (PDG B(km3)=3.352%)\nto B(km3g)=(1.51+/-0.12(stat))e-5.\nOu r results are preliminary\, with systematic errors are being estimated.\n\ nhttps://indico.particle.mephi.ru/event/275/contributions/3322/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3322/ END:VEVENT BEGIN:VEVENT SUMMARY:INT- contribution to form factors of $K^+\\rightarrow{\\mu^+}{\\nu _{\\mu}}{\\gamma}$ decay in OKA experiment DTSTART;VALUE=DATE-TIME:20221130T165000Z DTEND;VALUE=DATE-TIME:20221130T170500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3316@cern.ch DESCRIPTION:Speakers: Vladimir Kravtsov ()\nA new precise measurement of t he vector and axial-vector form factors difference $F_V-F_A$ in the decay $K^+\\rightarrow{\\mu^+}{\\nu_{\\mu}}{\\gamma}$ is presented. About 145K e vents of $K^+\\rightarrow{\\mu^+}{\\nu_{\\mu}}{\\gamma}$ have been selecte d in OKA experiment. The result is $F_V-F_A=0.135\\pm0.017(stat)\\pm0.024( syst)$. The number of events is about 1.5 times higher and both errors are smaller than last published OKA result. The presented result is considere d as preliminary.\n\nhttps://indico.particle.mephi.ru/event/275/contributi ons/3316/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3316/ END:VEVENT BEGIN:VEVENT SUMMARY:First measurement of the K± → π 0π 0µ ±ν decay DTSTART;VALUE=DATE-TIME:20221130T163500Z DTEND;VALUE=DATE-TIME:20221130T165000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3311@cern.ch DESCRIPTION:Speakers: Anna Korotkova (JINR)\nThe first observation of the decay K± → π\n0π\n0µ\n±ν (K00\nµ4) by the NA48/2\nexperiment at t he CERN-SPS is reported. From 2437 selected signal candidates with 15%\nba ckground contamination\, the branching ratio of the decay is measured in t he restricted\nkinematical space of the squared dilepton mass above 0.03 G eV2\n/c4\nand extrapolated to the full\nkinematical space. The result is f ound to be in agreement with the R form factor from 1-loop\nChiral Perturb ation Theory.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3311/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3311/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for heavy sterile neutrino from Ds decay DTSTART;VALUE=DATE-TIME:20221130T162000Z DTEND;VALUE=DATE-TIME:20221130T163500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3314@cern.ch DESCRIPTION:Speakers: Kirill Ivanov (Moscow Institute of Physics and Techn ology)\nStandard Model of high energy physics is very successful\, but neu trino sector is not completely accommodated into it (e.g. neutrino oscilla tions). One of the possible solution is introduction of heavy sterile neut rino\, which does not have any flavour and interacts with only flavour SM neutrinos via oscillations. \n\nIn this talk we present the preparatory st udies dedicated to the future search heavy sterile neutrino N in CMS Exper iment\, where N is originating from Ds+ —> mu+ N —> mu+ mu+ pi- decay\ , and Ds+ are coming from semi-leptonic decays Bs0 —> Ds+ mu- mu_nu. The se studies are original and were conducted for the first time within the C MS Experiment. \n\nThe talk is divided into the two parts. \nFor the first one we study the reference and normalisation channels Ds+ —> phi pi+ —> K+ K- pi+ and Ds+ —> pi+ pi- pi+ (where Ds+ is coming from both pro mpt and semi-leptonic Bs0)\, using CMS data (2018 sqrt(s) = 13 TeV pp-coll isions) with the dedicated BParking dataset (which contains a detached muo n with large p_T — semi-leptonic signature). \nFor the second one we pro vide the detailed studies of signal Ds+ —> mu+ N decay using Monte-Carl o simulation samples with CMS detector 2018 conditions. Several points on (m_N\, V_Nmu) plane are generated for the sterile neutrino properties\, wh ere m_N and V_Nmu are the expected mass of N and coupling parameter with m ass. We study kinematic and topological variables of the involved particle s\, generator and reconstruction efficiencies in dependence of N propertie s. \n\nThe obtained results will be used for the future search for this de cay and heavy sterile neutrino\, using real CMS Experiment data.\n\nhttps: //indico.particle.mephi.ru/event/275/contributions/3314/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3314/ END:VEVENT BEGIN:VEVENT SUMMARY:Latest results from Kaon experiments at CERN DTSTART;VALUE=DATE-TIME:20221130T160500Z DTEND;VALUE=DATE-TIME:20221130T162000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3321@cern.ch DESCRIPTION:Speakers: Sergey Kholodenko (NRC «Kurchatov Institute» - IHE P)\nAn overview of the latest results from Kaon experiments at CERN and th e future prospect will be presented. The NA62 experiment collected the wor ld's largest dataset of charged kaon decays in 2016-2018\, leading to the first measurement of the branching ratio of the ultra-rare $K^+ \\to \\pi^ + \\nu \\bar\\nu$ decay\, based on 20 candidates.\nThe radiative kaon deca y $K^+ \\to \\pi^0 e^+ \\nu \\gamma$ ($Ke3\\gamma$) is studied with the da ta recorded in 2017-2018\, achieving the most precise measurements of the $Ke3\\gamma$ branching ratio and T-asymmetry.\nPreliminary results from an analysis of the flavour-changing neutral current $K^+ \\to \\pi^+ \\mu^+ \\mu^-$ decay led to the most precise determination of the form-factor par ameters $𝑎+$ and $𝑏+$ using data collected in 2017-2018.\nNew prelim inary results are obtained from an analysis of the $K^+ \\to \\pi^+ \\gamm a \\gamma$ decay using data collected in 2016-2018 with a minimum-bias tri gger\, leading to an unprecedented sensitivity. This analysis can be natur ally\nextended to search for the $K^+ \\to \\pi^+A$\, $A \\to \\gamma\\gam ma$ process\, where $A$ is a short-lived axion-like particle.\nThe NA62 da taset is exploited to search for light feebly interacting particles (heavy neutral leptons) in Kaon decays. Dedicated trigger lines are employed to collect di-lepton final states\, which allowed establishing new stringent upper limits on the rates of lepton flavour and lepton number violating ka on decays.\nNA62 can also be run as a beam-dump experiment\, by removing t he Kaon production target and moving the upstream collimators into a "clos ed" position. Analyses of the data taken in beam-dump mode are performed t o search for visible decays of exotic mediators\, with a particular emphas is on Dark Photon Models.\nThe first observation of the decay $K^{\\pm} \\ to \\pi^0 \\pi^0 \\mu^{\\pm} \\nu$ ($K00\\mu4$) by the NA48/2 experiment a t CERN and the preliminary measurement of the branching ratio are also pre sented. The result is converted into the first\nmeasurement of the $R$ for m factor in $Kl4$ decays and compared with the Chiral Perturbation Theory 1-loop \npredictions.\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3321/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3321/ END:VEVENT BEGIN:VEVENT SUMMARY:First results of the NA65 (DsTau) experiment at CERN-SPS DTSTART;VALUE=DATE-TIME:20221130T155000Z DTEND;VALUE=DATE-TIME:20221130T160500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3320@cern.ch DESCRIPTION:Speakers: Madalina Mihaela Miloi (JINR\, University of Buchare st)\nThe NA65 (DsTau) experiment at CERN-SPS is studying tau-neutrino prod uction process in proton-nucleus interaction and aims to improve significa ntly an accuracy of calculations of tau neutrino fluxes for  accelerator based neutrino experiments. For detecting short lived particles (especiall y decaying via tau neutrino)\, the experiment uses a setup based on high r esolution nuclear emulsions\, that are fully automatically scanned after t he irradiation. Although the detector registers tracks with unprecedented density of $10^5 – 10^6$ tracks/$cm^2$\, the ultimate spatial and angu lar resolution of the emulsions allows a successful events reconstruction. The first results of the data analysis of the pilot run will be reported .\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3320/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3320/ END:VEVENT BEGIN:VEVENT SUMMARY:Jet flavour discrimination and measurement of quark and gluon jet fractions DTSTART;VALUE=DATE-TIME:20221130T153500Z DTEND;VALUE=DATE-TIME:20221130T155000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3319@cern.ch DESCRIPTION:Speakers: dzmitry budkouski (JINR)\nA method which can disting uish quark and gluon jets in mixed sample was described in report. The tag ger is a likelihood discriminant constructed out of three variables: parti cle multiplicity\, minor axis of the jets profile ellipse and fragmentatio n function. This quark-gluon likelihood (QGL) discriminator is used in ana lyses carried out in the CMS experiment. Using QGL discriminator\, a metho d for measuring the fraction of gluon jets in mixed sample was developed. Mathematical aspects of QGL discriminator and method to measure gluon frac tion are described.\n\nhttps://indico.particle.mephi.ru/event/275/contribu tions/3319/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3319/ END:VEVENT BEGIN:VEVENT SUMMARY:Production of $\\Sigma$ hyperons and search of $\\Sigma^{0}$-hype rnuclei at LHC with ALICE DTSTART;VALUE=DATE-TIME:20221130T152000Z DTEND;VALUE=DATE-TIME:20221130T153500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3315@cern.ch DESCRIPTION:Speakers: Alexander Borissov (IHEP-Protvino (RU))\nThe first m easurements of the transverse momentum\n($p_{\\rm{T}}$) spectra\, integrat ed yields and mean $p_{\\rm T}$ of $\\Sigma^{0}$ and $\\overline{\\Sigma}^ {0}$ hyperons \nin pp collisions at $\\sqrt{s} = 7$ TeV at the LHC are pre sented. \nThe $\\Sigma^{0}$($\\overline{\\Sigma}^{0}$) is reconstructed \n via its electromagnetic decay channel $\\Lambda$($\\overline{\\Lambda}$)$ \\gamma$.\nThe $\\Lambda$ ($\\overline{\\Lambda}$) baryon is reconstructed via its decay into p + $\\pi^{-}$ \n($\\overline{ \\rm{p}} + \\pi^{+}$)\, while the photon is detected by exploiting the unique capability \nof the ALICE detector to measure low-energy photons via conversion into e$^{+}$e $^{-}$ pairs\nin the detector material.\nThe yield of $\\Sigma^{0}$ is com pared to that of the $\\Lambda$ baryon\, which has the same quark \nconten t but different isospin. These data contribute to the understanding of had ron production \nmechanisms and provide a reference for constraining QCD-i nspired models and tuning Monte Carlo \nevent generators such as PYTHIA. \ n\nIn addition\, the results on the first detection of $\\Sigma^{+}$ hype ron at LHC with ALICE are shown. \nAlso\, the feasibility of a search for a bound state of proton\, neutron and \n$\\Sigma^{0}(\\Sigma^0$-hypernuc lei $^{3}_{\\Sigma^{0}}$H) is presented\, based on the luminosities forese en for \nthe LHC Runs 3 and 4.\n\nhttps://indico.particle.mephi.ru/event/2 75/contributions/3315/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3315/ END:VEVENT BEGIN:VEVENT SUMMARY:ATLAS results on $B_c$ production and decays DTSTART;VALUE=DATE-TIME:20221130T150000Z DTEND;VALUE=DATE-TIME:20221130T152000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3325@cern.ch DESCRIPTION:Speakers: Tatiana Lyubushkina (JINR Dubna)\nRecent results on $B_c$ production and decays from the proton-proton collision data taken by the ATLAS experiment will be presented.\nThe measurement of the different ial ratios of $B_c^+$ and $B^+$ production cross sections at 8 TeV will be shown.\nNew results on the $B_c$ decays to $J/\\psi$ $D_s(*)$ final state s obtained with the Run 2 data at 13 TeV will also be reported.\n\nhttps:/ /indico.particle.mephi.ru/event/275/contributions/3325/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3325/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing light Dark Matter with NA64e experiment DTSTART;VALUE=DATE-TIME:20221130T094500Z DTEND;VALUE=DATE-TIME:20221130T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3312@cern.ch DESCRIPTION:Speakers: Dmitry Kirpichnikov (INR RAS\, Moscow)\nWe discuss a limits on a hidden sector models\, which have been excluded recently by N A64e that is the electron fixed-target experiment at CERN SPS. Namely\, ne w experimental bounds on Dark Photon\, millicharged fermions and axion-lik e particles are obtained from the missing energy signatures of the electro n beam incident on a lead target of NA64e.\n\nhttps://indico.particle.meph i.ru/event/275/contributions/3312/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3312/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for dark matter produced in association with a leptonically decaying Z boson with the CMS Experiment at the LHC DTSTART;VALUE=DATE-TIME:20221130T092500Z DTEND;VALUE=DATE-TIME:20221130T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3324@cern.ch DESCRIPTION:Speakers: Kirill Slizhevskiy (JINR)\nA search for dark matter particles is performed using events with a Z boson candidate and large mis sing transverse momentum. The analysis is based on proton-proton collision data at a center-of-mass energy of 13 TeV\, collected by the CMS experime nt at the LHC in 2016-2018\, corresponding to an integrated luminosity of 137 fb$^{−1}$. The search uses the decay channels Z → ee and Z → μ μ. No significant excess of events is observed over the background expect ed from the standard model. Limits are set on dark matter particle product ion in the context of simplified models with vector\, axial-vector\, scala r\, and pseudoscalar mediators\, as well as on a two-Higgs-doublet model w ith an additional pseudoscalar mediator. The results of preparation for RU N3 analysis are also discussed.\n\nhttps://indico.particle.mephi.ru/event/ 275/contributions/3324/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3324/ END:VEVENT BEGIN:VEVENT SUMMARY:Corrections to the nTGC limits at EFT $O(\\Lambda^{-8})$ expansion due to the possible background BSM contributions in $Z(\\nu\\bar{\\nu})\\ gamma$ production DTSTART;VALUE=DATE-TIME:20221130T091000Z DTEND;VALUE=DATE-TIME:20221130T092500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3313@cern.ch DESCRIPTION:Speakers: Artur Semushin (NRNU MEPhI)\nThe search for anomalou s couplings is an indirect model-independent way to find deviations from t he Standard Model (SM). Effective field theory allows to parameterize thes e anomalous couplings in the Lagrangian\, respecting the SM gauge symmetri es\, using operators of higher dimensions constructed from the SM fields. In the classical way of setting the limits on the operators (Wilson) coeff icients\, it is assumed\, that beyond-the-Standard-Model contributions com e from the signal process only. However\, one or several backgrounds can b e also affected by non-zero Wilson coefficients\, leading to corrections o f the resulting limits on the Wilson coefficients. In this work the correc tions are estimated for neutral triple gauge boson coupling limits from $Z (\\nu\\bar{\\nu})\\gamma$ production at the conditions of the ATLAS experi ment\, since this process is extremely sensitive to such anomalous couplin gs. The corrections are found to be significant and improve the limits on the Wilson coefficients.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3313/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3313/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of gluon fusion production of the Higgs boson in H→ WW∗→eνμν decays using pp collisions at √s=13 TeV with the ATLAS d etector DTSTART;VALUE=DATE-TIME:20221130T085000Z DTEND;VALUE=DATE-TIME:20221130T091000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3326@cern.ch DESCRIPTION:Speakers: Alexander Gavriliuk (NRC-KCTEP\, Moscow)\nHiggs boso n production via gluon-gluon fusion in proton-proton collisions is measure d in the H→WW∗→eνμν decay channel. The utilized dataset is the √s=13 TeV proton-proton collision data collected by the ATLAS experiment during Run 2 of the Large Hadron Collider with an integrated luminosity o f 139 fb−1. The total cross section for Higgs boson production by gluon- gluon fusion times the H→WW∗ branching ratio is measured to be 12.0±1 .4 pb\, in agreement with the Standard Model predictions of 10.4±0.6 pb. Higgs boson production is further characterized through measurements of Si mplified Template Cross Sections in a total of 6 kinematical fiducial regi ons for the considered mode.\n\nhttps://indico.particle.mephi.ru/event/275 /contributions/3326/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3326/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of Higgs boson production through vector boson fusion in the H→WW∗→eνμν final state at √s=13 TeV with the ATLAS dete ctor DTSTART;VALUE=DATE-TIME:20221130T083000Z DTEND;VALUE=DATE-TIME:20221130T085000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3323@cern.ch DESCRIPTION:Speakers: Ekaterina Ramakoti (NRC-KCTEP\, Moscow)\nThe Higgs boson in its vector boson fusion production mode and its decay to a pair o f W bosons that in turn decay leptonically to a eνμν final state\, is p robed. The Large Hadron Collider delivered proton-proton collisions at a c enter-of-mass energy of 13 TeV between 2015 and 2018 which were recorded b y the ATLAS detector\, corresponding to an integrated luminosity of 139 fb −1. Deep Neural Network is exploited in the analysis. The total cross se ction for Higgs boson production by vector-boson fusion times the H→WW ∗ branching ratio is measured to be 0.75+0.19−0.16 pb. The results are consistent with Standard Model expectations of 0.81±0.02 pb\n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3323/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3323/ END:VEVENT BEGIN:VEVENT SUMMARY:The NA64-mu experiment at the CERN SPS. DTSTART;VALUE=DATE-TIME:20221130T081500Z DTEND;VALUE=DATE-TIME:20221130T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3318@cern.ch DESCRIPTION:Speakers: Svetlana Gertsenberger (JINR)\nThe NA64 experiment i s a fixed-target experiment at the CERN SPS combining the active beam dump and missing energy techniques to search for rare events by colliding 100- 150 GeV energy electron or muon beams onto an active target.\nThe talk pre sents the muon part of the experiment. The NA64-mu looks for the muon (g-2 ) anomaly and light dark matter with the semi-visible dark photon channel. The present report shows the status of the experiment\, the theoretical a nd experimental parts\, and future goals\n\nhttps://indico.particle.mephi. ru/event/275/contributions/3318/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3318/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the FASER experiment at LHC DTSTART;VALUE=DATE-TIME:20221130T080000Z DTEND;VALUE=DATE-TIME:20221130T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3299@cern.ch DESCRIPTION:Speakers: Svetlana Vasina (JINR)\nFASER is a new experiment at the CERN LHC which is located on the beam\ncollision axis line-of-sight 4 80 m from the ATLAS collision point in\nunused service tunnel\, TI12. The quite compact detector is designed to\nsearch for light and very weakly-in teracting new particles produced in the LHC collisions. The additional FAS ERnu emulsion sub-detector allows\nto detect and study neutrinos of all fl avours produced at LHC. The\ndetector has been successfully installed and is taking data during the LHC\nRun 3. Details on physics prospects\, detec tor\ndesign\, commissioning status and first recorded data will be given i n\nthis talk.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3299/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3299/ END:VEVENT BEGIN:VEVENT SUMMARY:Searching for the baryon-to-meson transition region with the MPD a t NICA DTSTART;VALUE=DATE-TIME:20221202T164500Z DTEND;VALUE=DATE-TIME:20221202T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3276@cern.ch DESCRIPTION:Speakers: Rodrigo Guzmán Castro (Instituto de Ciencias Nuclea res)\nIn heavy-ion reactions\, statistical models predict a rapid change i n the baryon-to-meson ratio\nas a function of the collision energy. This c hange occurs when the hadronic medium transits\nfrom a baryon- to a meson- dominated gas. The transition is expected to take place at a\ntemperature of 140 MeV and a baryon chemical potential of 420 MeV\, corresponding to a \ncollision energy of 8.2 GeV per nucleon in the center of mass. The Multi -Purpose Detector\n(MPD)\, which is now under construction at the JINR\, i n Dubna\, is designed to study heavy-ion\ncollisions at the energies from 4 to 11 GeV per nucleon. This energy range is suitable for the\nexploratio n of this transition region. In this talk\, we present results of feasibil ity studies for the\nmeasurement of the transverse momentum spectra for me sons and baryons using Monte\nCarlo simulated data samples\, in order to e xplore the crossing point between these\ntransverse momenta as a function of the centrality and collision energy.\n\nhttps://indico.particle.mephi.r u/event/275/contributions/3276/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3276/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of the correlation between mean transverse momentum and anisotropic flow at NICA energy range DTSTART;VALUE=DATE-TIME:20221202T163000Z DTEND;VALUE=DATE-TIME:20221202T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3293@cern.ch DESCRIPTION:Speakers: Dim Idrisov ()\nOne of the main tasks of heavy ion p hysics is to study the transport properties of the quark-gluon plasma (QGP ) as a function of temperature and baryon chemical potential. \nFor a prec ision extraction of the specific shear viscosity of the strongly interacte d matter\, the observables such as the variances of the event mean-transve rse momentum\, the square of anisotropic flow\, and their correlation can be used. In our work we study the centrality dependence of the correlation between the average transverse momentum and the square of the anisotropic flow in Au+Au collisions in the different models at NICA energy range.\n\ nhttps://indico.particle.mephi.ru/event/275/contributions/3293/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3293/ END:VEVENT BEGIN:VEVENT SUMMARY:Using Machine Learning for Particle Identification in MPD DTSTART;VALUE=DATE-TIME:20221202T161500Z DTEND;VALUE=DATE-TIME:20221202T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3271@cern.ch DESCRIPTION:Speakers: Grigorii Tolkachev (National Research Nuclear Unive rsity MEPhI (RU))\nParticle Identification (PID) is an important part for most of the physics analysis in heavy-ion experiments. The principal chall enge for PID is how to provide good identification in a wide range of part icle momenta. Different approaches are used to combine observations from v arious detectors to enrich overall PID capabilities. Hence\, PID is a clas sification task\, that is why it can be performed using Machine Learning ( ML) approach which has a wide range of different models for classification task. Those methods can help to extend PID over the classical methods. Th is study has performed the optimal multilayer perceptron (MLP) classifier selection for particle identification.\n\nhttps://indico.particle.mephi.ru /event/275/contributions/3271/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3271/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects for the measurement of electromagnetic probes in heavy-i on collisions at NICA energies DTSTART;VALUE=DATE-TIME:20221202T160000Z DTEND;VALUE=DATE-TIME:20221202T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3279@cern.ch DESCRIPTION:Speakers: Victor Riabov (PNPI\, MEPHI)\nThe future MPD experim ent at NICA collider is designed to study heavy-ion collisions at $\\sqrt{ s_{NN}}$ = 4-11 GeV. For this energy range\, which corresponds to the high est net-baryon densities and modest temperatures\, models predict a first order phase transition from hadronic matter to the new state of matter for med of deconfined quarks and gluons and existence of a critical end point. Measurements of electromagnetic probes such as the direct photons and die lectron continuum significantly extend the physics program of the MPD expe riment. These penetrating probes are sensitive to the deconfinement and th e chiral symmetry restoration and provide the most direct estimation of th e system temperature in heavy-ion collisions.\nIn this contribution\, we p resent results of physics feasibility studies for the measurement of neutr al mesons\, direct photons and dielectron pairs using different experiment al techniques with the MPD experimental setup in heavy-ion collisions at N ICA energies.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3279/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3279/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of the second order azimuthal anisotropy for $\\pi^{0}$ meso ns in Cu+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV DTSTART;VALUE=DATE-TIME:20221202T154500Z DTEND;VALUE=DATE-TIME:20221202T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3290@cern.ch DESCRIPTION:Speakers: Egor Bannikov (Peter the Great St.Petersburg Polytec hnic University (SPbPU))\nThe study of the azimuthal anisotropy of hadron production provides the opportunity to investigate properties of nuclear m atter at extreme energy densities\, where quarks and gluons are deconfined . This state of matter was called quark-gluon plasma (QGP). The second ord er coefficient of azimuthal anisotropy\, i.e. the elliptic flow ($v_{2}$)\ , is one of the main observables measured in relativistic heavy-ion collis ions. The elliptic flow for $\\pi^{0}$ was measured by PHENIX experiment a t RHIC in symmetric collision systems: Cu+Cu and Au+Au. The measurement of the $v_{2}$ values in Cu+Au asymmetric collisions and comparison of these values with those in symmetric collisions makes it possible to determine the dependence of the elliptic flow for light hadrons on the initial geome try of the system. It is also interesting to check if quark number scaling of $v_{2}$ observed in symmetric collisions is present in asymmetric Cu+A u collisions.\nCurrent report is dedicated to the measurement of $\\pi^{0} $ mesons elliptic flow in Cu+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV a s a function of transverse momentum and centrality.\n\nhttps://indico.part icle.mephi.ru/event/275/contributions/3290/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3290/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent Results from the PHENIX Experiment DTSTART;VALUE=DATE-TIME:20221202T153000Z DTEND;VALUE=DATE-TIME:20221202T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3281@cern.ch DESCRIPTION:Speakers: Daria Larionova ()\nThe primary mission of the PHENI X experiment is investigation of a state of matter called quark-gluon plas ma (QGP)\, which according to quantum chromodynamics can be formed in rela tivistic heavy-ion collisions. Despite the success of QGP studies in heavy -ion collisions\, there are still many open questions about QGP formation\ , expansion and hadronization. Current talk will present most recent PHENI X results on identified charged hadron and phi-meson production in Cu+Au a nd U+U collisions as well as photon\, charm and bottom production in Au+Au collisions. Small collision systems such as (p+Al\, p+Au\, d+Au\, He+Au) were long thought to be a reliable way to study cold nuclear matter effect s without QGP presence. However\, in 2019 PHENIX presented experimental ev idences for possible QGP formation in p/d/He+Au collisions. Recent PHENIX measurements continue to study possible final state effects in small colli sion systems and minimal conditions for QGP formation. This talk will pres ent latest results on identified charged hadron\, phi\, pi0\, psi(2S) and direct photon production in small collision systems.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3281/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3281/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects for the study of the hot QCD matter with heavy-flavor pr obes at ALICE-3 (HL-LHC) DTSTART;VALUE=DATE-TIME:20221202T151500Z DTEND;VALUE=DATE-TIME:20221202T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3296@cern.ch DESCRIPTION:Speakers: Mikhail Malaev (NRC Kurchatov Institute PNPI)\nALICE -3 is being designed as a next-generation heavy-ion experiment to be opera ted at high-luminosity Large Hadron Collider (HL-LHC) at CERN after 2030. With a factor of fifty higher luminosity\, the ALICE-3 will be able to stu dy properties of quark-gluon matter with the probes\, which were previousl y unavailable due to small cross-sections\, high background levels\, and i nsufficient sensitivity of detectors. In particular\, properties of the ho t and dense QCD matter will be studied by measuring production cross secti ons and nuclear modification factors for open charm hadrons to determine t he energy losses by heavy flavor quarks traversing a hot quark-gluon matt er.\n\nIn this contribution\, we present results of the feasibility studie s for the measurements of rarely produced ground and excited states of op en charm (D0\, D*(2007)\, D*(2010)) in the ALICE-3 experimental setup and formulate the main requirements for the detector subsystems to ensure reli able signal extraction in a wide rapidity and transverse momentum ranges.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3296/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3296/ END:VEVENT BEGIN:VEVENT SUMMARY:Describing $\\phi$ meson production in small collision systems wit h nuclear modified parton distribution functions DTSTART;VALUE=DATE-TIME:20221202T150000Z DTEND;VALUE=DATE-TIME:20221202T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3297@cern.ch DESCRIPTION:Speakers: Mariia Mitrankova (Peter the Great St.Petersburg Pol ytechnic University)\nThe deconfined state of strongly interacting quarks and gluons\, quark-gluon plasma\, may be formed in relativistic ion collis ions at sufficient temperature and energy density. The signatures of quark -gluon plasma formation were observed in heavy-ion collisions by studying $\\phi$ meson production. In small-collision systems\, such as *p*+Al\, *p *+Au\, *d*+Au\, and $^3$He+Au\, the volume and lifetime of the produced me dium might be insufficient for observation of quark-gluon plasma effects. However various physics mechanisms reflecting initial state of the collisi on\, cold nuclear matter effects\, may lead to a collective-like behaviour in small-collision systems without quark-gluon plasma formation. The nucl ear modified parton distribution functions are considered to be an underly ing physics mechanism of cold nuclear matter effects. This talk presents t he comparison of $\\phi$ meson production in *p*+Al\, *p*+Au\, *d*+Au\, an d $^3$He+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV at midrapidity ($|\\e ta|\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3297/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3297/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutral meson measurements at ALICE experiment DTSTART;VALUE=DATE-TIME:20221202T144500Z DTEND;VALUE=DATE-TIME:20221202T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3295@cern.ch DESCRIPTION:Speakers: Vladislav Kuskov (National Research Centre Kurchatov Institute)\nThe invariant differential cross sections of inclusive $\\pi^ 0$ and $\\eta$ mesons were measured in the midrapidity region in pp collis ions at $\\sqrt{s}$ = 13 TeV and p--Pb collisions at $\\sqrt{s_{NN}}$ = 8. 16 TeV in a wide transverse momentum ($p_{\\mathrm{T}}$) range with the AL ICE experiment. The unprecedentedly large $p_{\\mathrm{T}}$-range was achi eved by combining various analysis techniques and triggers\, involving the Electromagnetic Calorimeter (EMCal) and the Photon Spectrometer (PHOS). T he obtained cross sections provide strong constraints on parton distributi ons and fragmentation functions for light mesons\, and can be used to furt her improve the theoretical descriptions of hadron production.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3295/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3295/ END:VEVENT BEGIN:VEVENT SUMMARY:Methods for centrality determination in heavy-ion collisions with the BM@N experiment DTSTART;VALUE=DATE-TIME:20221202T093000Z DTEND;VALUE=DATE-TIME:20221202T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3284@cern.ch DESCRIPTION:Speakers: Ilya Segal (National Research Nuclear University MEP hI (Moscow Engineering Physics Institute))\nCentrality is an important con cept in the study of strongly interacting matter created in a heavy-ion co llision whose evolution depends on its initial geometry. Experimentally co llisions can be characterized by the measured multiplicities or energy of produced particles or spectator fragments. Relation between collision geom etry and experimentally measured multiplicities is commonly evaluated with in the Monte-Carlo Glauber approach. \n\nWe will present methods for centr ality determination in heavy-ion collisions with the Baryonic Matter at Nu clotron (BM@N) experiment. The multiplicity of charged hadrons is provided by the BM@N Silicon Tracking System (STS) and Gaseous Electron Multiplier (GEM) detectors and connected to collision geometry parameters using the Monte-Carlo Glauber model. The energy of projectile spectator fragments is estimated with the BM@N Forward Hadron Calorimeter (FHCal) and Hodoscope detectors. We will also touch possibilities to determine centrality using the spectators’ fragments and Monte-Carlo Glauber model.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3284/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3284/ END:VEVENT BEGIN:VEVENT SUMMARY:Midrapidity cluster formation within PHQMD approach DTSTART;VALUE=DATE-TIME:20221202T091500Z DTEND;VALUE=DATE-TIME:20221202T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3289@cern.ch DESCRIPTION:Speakers: Viktar Kireyeu (JINR)\nThe clusters have been observ ed experimentally at midrapidity from SIS up to LHC energies. However\, th e understanding of the mechanisms for the production of weakly bound clust ers in heavy-ion reactions is still one of the challenging puzzles nowaday s\, usually called "ice in a fire". \nIn the Parton-Hadron-Quantum-Molecul ar Dynamics (PHQMD) clusters are formed dynamically due to the interaction s between baryons described on the basis of Quantum Molecular Dynamics whi ch allows to propagate the n-body Wigner density and n-body correlations i n phase-space\, which is essential for the cluster formation.\nWe report o n new results and recent developments of the PHQMD transport approach.\n\n https://indico.particle.mephi.ru/event/275/contributions/3289/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3289/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of two particles correlations in heavy ion collisions at NIC A energies DTSTART;VALUE=DATE-TIME:20221202T090000Z DTEND;VALUE=DATE-TIME:20221202T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3272@cern.ch DESCRIPTION:Speakers: Oleg Rogachevsky (JINR)\nTwo particles angular corre lations are a useful tool to study the mechanisms of particle production b y observing the angular correlation (∆η\,∆ϕ) between pairs of partic les in an event. Different structures in the ∆η − ∆ϕ space are cau sed by various mechanisms of particle production and interactions between particles shortly after production. Examining these structures can give us insight\ninto the nature of nuclear interactions.\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3272/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3272/ END:VEVENT BEGIN:VEVENT SUMMARY:Anisotropic flow measurements from the NA61/SHINE and NA49 beam mo mentum scan programs at the CERN SPS DTSTART;VALUE=DATE-TIME:20221202T083000Z DTEND;VALUE=DATE-TIME:20221202T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3278@cern.ch DESCRIPTION:Speakers: Oleg Golosov (NRC "Kurchatov Institute"\, NRNU MEPhI )\, Evgeny Kashirin (National Research Nuclear University MEPhI)\nThe NA61 /SHINE experiment at the CERN SPS has recently extended its program for th e energy scan with Pb ions. In the past\, the NA49 experiment\, which prec eded NA61/SHINE\, also recorded data for Pb-Pb collisions at different ene rgies. Together\, the two experiments\ncover a wide range of beam energies provided by the CERN SPS in the range 13 - 150 A GeV/c. Analysis of the n ew NA61/SHINE data and reanalysis of the existing NA49 data\nusing modern measurement techniques allow for a new comprehensive systematic study of c ollective flow relative to the spectator plane.\nWe will present new NA61/ SHINE results on directed and elliptic flow measurement in Pb-Pb collision s at 13 and 30A GeV/c relative to the spectator plane determined with the Projectile Spectator Detector. Also a new analysis of 40A GeV data collect ed by the NA49 experiment using forward spectator calorimeters (VETO and R CAL) will be shown. The flow coefficients are reported as a function of ra pidity and transverse momentum in different classes of collision centralit y. The new results are compared with existing results from the previous NA 49 analysis and the STAR experiment at RHIC.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3278/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3278/ END:VEVENT BEGIN:VEVENT SUMMARY:Photons as a signal of deconfinement in hadronic matter under extr eme conditions DTSTART;VALUE=DATE-TIME:20221202T080000Z DTEND;VALUE=DATE-TIME:20221202T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3273@cern.ch DESCRIPTION:Speakers: Aleksei Nikolskii (JINR)\nThe study of the hadron ma tter properties under extreme conditions of high baryon density\, energy a nd strong electromagnetic fields in heavy ion collisions is one of the mos t important problems in modern high-energy physics. The striking example o f such state of matter is the quark-gluon plasma (QGP). One of the possibl e ways to study the properties of quark-gluon plasma is the so-called elec tromagnetic probes - photons and leptons. Since these particles freely lea ve the plasma volume practically without interacting with hadron matter\, they can carry direct information about the processes in the QGP.\n\nThe r eport is devoted to the specific mechanism of photon production by convers ion from two gluons gg → γ in the framework of the mean-field approach to the QCD vacuum. According to the domain model of QCD vacuum\, the conf inement phase is dominated by Abelian (anti-)self-dual gluon fields\, whil e the deconfinement phase is characterized by a strong chromomagnetic fiel d. In the confinement phase\, the production probability of two gluons int o a photon vanishes due to the random orientation of the statistical ensem ble of confining vacuum fields. In contrast\, strong magnetic field with s ingled direction is generated by relativistic heavy ion collisions and pla ys the role of a trigger for the deconfinement phase transition. This tran sition is accompanied by chromomagnetic field with the same direction as the magnetic field. As a consequence\, the conditions of Furry theorem are violated\, and the conversion probability of two gluons into photon is no nzero\, and their distribution has a strong angular anisotropy. Thus\, the photon production in the investigated process can act as one of the impor tant signals of transition of hadronic matter to the deconfinement phase.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3273/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3273/ END:VEVENT BEGIN:VEVENT SUMMARY:Exploring experimental heavy-ion centrality dependence of particle production in MC Glauber model DTSTART;VALUE=DATE-TIME:20221202T081500Z DTEND;VALUE=DATE-TIME:20221202T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3269@cern.ch DESCRIPTION:Speakers: Garnik Ambaryan (SINP MSU)\nThe model analysis of pa rticle production in heavy ion collisions depending on number of emission sources (wounded nucleons or partons) at different centralities is perform ed in a wide collision energy range from RHIC to LHC and for all measured pair of heavy ions.\n\nThe model of wounded partons based on Glauber calcu lations gives better scaling for the ratio of charged particle multiplicit y to the number of wounded constituent partons $N_{ch}/N_{c-part}$ dependi ng on collision centrality for all considered energies and colliding syste ms.\n\n Also\, the eccentricity density distribution in Glauber Monte Carl o framework has been fulfilled for several centrality intervals. Assuming linear dependence between eccentricity and elliptic flow\, the eccentricit y density distribution is compared with CMS data on flow fluctuations for Pb+Pb collisions at $\\sqrt s_{NN} = 5.02$ TeV data. The probability densi ty distribution with wounded partons better describes experimental data fo r more central collisions.\n\nhttps://indico.particle.mephi.ru/event/275/c ontributions/3269/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3269/ END:VEVENT BEGIN:VEVENT SUMMARY:Light-nuclei production in heavy-ion collisions at $\\sqrt{s_{\\rm NN}}=$ 6.4--19.6 GeV in THESEUS generator based on 3-fluid dynamics DTSTART;VALUE=DATE-TIME:20221202T074500Z DTEND;VALUE=DATE-TIME:20221202T080000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3287@cern.ch DESCRIPTION:Speakers: Marina Kozhevnikova (JINR)\nWe present results of si mulations of the light-nuclei production in relativistic heavy-ion collisi ons within the updated event generator based on the three-fluid dynamics ( 3FD)\, complemented by Ultra-relativistic Quantum Molecular Dynamics (UrQM D) for the late stage of the nuclear collision~--- the Three-fluid Hydrody namics-based Event Simulator Extended \nby UrQMD final State interactions (THESEUS). \nThe light-nuclei production is treated with the thermodynamic al approach on the equal basis with hadrons.\nThe simulations were perform ed for Pb+Pb and Au+Au collisions in the collision energy range of $\\sqrt {s_{NN}}=$ 6.4--19.6 GeV. Their results are compared with available data from the NA49 and STAR collaborations\, rapidity distributions and transve rse-momentum spectra. \nThe updated generator revealed not perfect\, but a reasonable reproduction of the data on the light nuclei\, especially th e functional dependence on the collision energy and light-nucleus mass. \n It is important that this reproduction is achieved without any extra param eters\, while the coalescence approach in 3FD requires special tuning of t he coalescence coefficients for each light nucleus separately. \nThe colle ctive flow\, directed and elliptic ones\, are also considered.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3287/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3287/ END:VEVENT BEGIN:VEVENT SUMMARY:FEASIBILITY STUDY OF HYPERNUCLEI PRODUCTION AT NICA/MPD DTSTART;VALUE=DATE-TIME:20221202T073000Z DTEND;VALUE=DATE-TIME:20221202T074500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3270@cern.ch DESCRIPTION:Speakers: Vadim Kolesnikov (JINR)\nNICA is a new flagship proj ect at JINR aimed at the construction in Dubna of an accelerator complex f or heavy ions and polarized particles. The main goal of the MPD experiment at NICA is the exploration of the structure of the phase diagram of dense nuclear matter. Hypernuclei are used as a laboratory offering the opportu nity to study the properties of strong interactions involving hyperons\, w hich play a key role in understanding of the structure of neutron stars. Аccording to thermal model calculations\, a pronounced maximum of the pro duction rates of hypernuclei is expected at NICA energies. This will poten tially allow determination of the hypernuclei properties\, including lifet imes\, with high precision improving the quality of the existing results. \nIn this report\, an overview of recent hypernuclei measurements will be given and MPD prospects for the study of hypernuclei production in heavy-i on collisions at NICA energies will be presented.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3270/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3270/ END:VEVENT BEGIN:VEVENT SUMMARY:Generating peaks in primordial perturbation spectra DTSTART;VALUE=DATE-TIME:20221130T123000Z DTEND;VALUE=DATE-TIME:20221130T130000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3227@cern.ch DESCRIPTION:Speakers: Alexei Starobinsky (Landau Institute for Theoretical Physics)\nAt the present state-of-the-art\, the simplest inflationary mod els\, based either on scalar fields in General Relativity or on modified f (R) gravity\, which produce the best fit to all existing observational dat a\, require only one dimensionless parameter taken from observations. Thes e models include the pioneer R+R2 (Starobinsky) one\, the Higgs model\, an d the mixed R2-Higgs model that has been shown to be effectively one-param eter\, too. They predict scale-free and close to scale-invariant power spe ctra of primordial scalar perturbations and gravitational waves generated during inflation. Their target prediction for the tensor-to-scalar ratio i s r=3(1 - ns)2 = 0.004. Still future observations\, in particular discover y of primordial black holes\, may prove that the primordial scalar power s pectrum has additional local peaks and troughs what requires at least two new parameters. I discuss mechanisms to produce such features including th e recently proposed one which arise in many-field inflation with a large n on-minimal kinetic term of an inflaton field leaving inflation before its end [1]. In this case\, in addition to PBHs\, small-scale secondary gravit ational waves with a non-scale-invariant power spectrum are generated\, to o. As for local non-scale-free features at cosmological scales\, the prese nt CMB data do not favor them\, but are not able to exclude them completel y [2].\n\n1. M. Braglia\, D. K. Hazra\, F. Finelli\, G. F. Smoot\, L. Srir amkumar\, A. A. Starobinsky. JCAP 2008\, 001 (2020)\; arXiv:2005.02895.\n2 . D. K. Hazra\, D. Paoletti\, I. Debono\, A. Shafieloo\, G. F. Smoot\, A. A. Starobinsky\, JCAP 2112\, 038 (2021)\; arXiv:2107.09460.\n\nhttps://ind ico.particle.mephi.ru/event/275/contributions/3227/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3227/ END:VEVENT BEGIN:VEVENT SUMMARY:Bose–Einstein correlations of charged pions in Au+Au collisions at sqrt(sNN) = 3 GeV from UrQMD DTSTART;VALUE=DATE-TIME:20221201T144500Z DTEND;VALUE=DATE-TIME:20221201T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3292@cern.ch DESCRIPTION:Speakers: Anna Kraeva (National Research Nuclear University ME PhI)\nBose–Einstein correlations of charged pions in Au+Au collisions at $\\sqrt{s_{NN}}$ = 3 GeV from UrQMD\n\nA. Kraeva${}^{1\,2}$\, G. Nigmatku lov${}^{1\,2}$\n\nE-mail: annakraeva555@gmail.com\, nigmatkulov@gmail.com \n\n\n\nThe method of correlation femtoscopy makes it possible to estimate the parameters of the particle-emitting region (radius of emission region \, $R$\, and correlation strength\, $\\lambda$). Measurement of femtoscopi c radius dependence on transverse momentum of particle pairs\, $k_T$\, is an important tool for studying the dynamics of the emission process [1].\n \nThis work is devoted to the study of momentum correlations of identical pions produced in Au+Au collisions at $\\sqrt{s_{NN}}$ = 3 GeV using the U rQMD (Ultrarelativistic Quantum Molecular Dynamics) model [2\, 3]. Three-d imensional femtoscopic analysis was performed as a function of $k_T$\, rap idity and collision centrality. Physical implications will be discussed.\n \n\n\nReferences:\n\n[1] Lisa M.A. et al. Femtoscopy in relativistic heavy ion collisions: two decades\nof progress // Annu. Rev. Nucl. Part. Sci. – 2005. – V.55. – P.357.\n\n[2] Bass S.A. et al. Microscopic Models for Ultrarelativistic Heavy Ion Collisions // Prog. Part. Nucl. Phys. – 1998. – V.41. – P.225.\n\n[3] Bleicher M. et al. Relativistic Hadron-H adron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Mode l // J. Phys. G: Nucl. Part. Phys. – 1999. – V.25. – P.1859.\n\n\n\n \n${}^1$National Research Nuclear University MEPhI\, Moscow\, 115409\, Ru ssia\n\n${}^2$Joint Institute for Nuclear Research (JINR)\, Dubna\, 141980 \, Russia\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3292 / LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3292/ END:VEVENT BEGIN:VEVENT SUMMARY:Monte-Carlo based investigation of long-range correlations and flu ctuations at the Large Hadron Collider energies DTSTART;VALUE=DATE-TIME:20221201T163000Z DTEND;VALUE=DATE-TIME:20221201T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3291@cern.ch DESCRIPTION:Speakers: Meer Danish F. (Department of Applied Physics\, Ali garh Muslim University\, Aligarh)\nThe correlation between particles produ ced at various pesudorapidity values is an important probe to disentangle the underlying dynamics of multi-particle production in high energy collis ions.\nThe long-range correlations are believed to be free from final-stat e effects.\nThe correlation strength ($b_{corr}$) has been studied for for ward ($N_{F}$) and backward ($N_{B}$) charged partice multiplicities.\nThe $b_{corr}$ has been investigated as a function of gap between the forward and backward pesudorapidity windows as well as the width of these windows .\nThese $b_{corr}$ has also been studied for positively and negatively ch arged particle multiplicity in forward and backward intervals\, respective ly.\nThe strongly intensive fluctuation measure ($\\Sigma$)\, which reduce s to unity in absence of any inter-particle correlations\, has also been i nvestigated by employing the two extensive variables i.e.\, $N_{F}$ and $N _{B}$.\n\n\nThe effect of processes like multiparton interaction (MPI) and color reconnection (CR) is also taken into account.\nThe events have been simulated for proton-proton and Pb-Pb collisions at the Large Hadron Coll ider energies using the Pythia8 event generator.\n\n[1] Adam\, Jaroslav\, et al. Journal of High Energy Physics 2015.5 (2015): 1-28.\n\n[2] Gorenste in\, M. I.\, and M. Gaździcki\, Physical Review C 84.1 (2011): 014904.\n\ n[3] Gazdzicki\, Marek\, M. I. Gorenstein\, and M. Mackowiak-Pawlowska\, P hysical Review C 88.2 (2013): 024907.\n\n[4] Sjöstrand\, Torbjörn\, et a l. Computer physics communications 191 (2015): 159-177.\n\nhttps://indico. particle.mephi.ru/event/275/contributions/3291/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3291/ END:VEVENT BEGIN:VEVENT SUMMARY:Evolution and fluctuations of chiral chemical potential in the hea vy ion collisions DTSTART;VALUE=DATE-TIME:20221201T164500Z DTEND;VALUE=DATE-TIME:20221201T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3280@cern.ch DESCRIPTION:Speakers: Vladimir Kovalenko (Saint Petersburg State Universit y)\nThe possible appearance of the effects of local parity breaking in the QCD medium formed in heavy ion collisions can happen due to violation of chiral symmetry\, the difference between the average densities of right- a nd left-handed quarks in the fireball [1]. In the statistical approach\, i t can be quantified by corresponding chiral chemical potential $\\mu_5$ [ 1\,2]. The experimental observables sensitive to the effects of local pari ty violation in strong interaction include search for polarisation splitti ng of the $\\rho^0$ and $\\omega^0$ mesons via angular dependence of spect ral functions in their decay to leptons [3\,4]. In this report we estimate the space-time evolution and fluctuations of $\\mu_5$ using relativistic hydrodynamics [5] and their effect on the light meson polarization splitti ng in Pb-Pb collisions at LHC energy.\n\nThe study was funded by the Russi an Science Foundation grant No. 22-22-00493\, https://rscf.ru/en/project/2 2-22-00493/\n\n1. A. A. Andrianov\, V. A. Andrianov\, D. Espriu\, and X. P lanells\, Phys. Lett. B\, 710\, 230–235 (2012).\n2. V. V. Braguta et al. \, Phys. Rev. D 93\, 034509 (2016)\n3. A.A.Andrianov\, V.A.Andrianov\, D.E spriu and X.Planells\, Phys. Rev. D 90\, no.3\, 034024 (2014) \n4. Vladim ir Kovalenko\, Alexander Andrianov\, and Vladimir Andrianov. J. Phys. Conf . Ser.\, 1690(1): 012097\, 2020.\n5. Bjoern Schenke\, Sangyong Jeon\, and Charles Gale\, Phys. Rev. C 82\, 014903 (2010).\n\nhttps://indico.particle .mephi.ru/event/275/contributions/3280/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3280/ END:VEVENT BEGIN:VEVENT SUMMARY:Anomaly of Entropy of Nuclear Medium Probed by KS0 Mesons Produced in Au+Au Collisions at RHIC DTSTART;VALUE=DATE-TIME:20221201T154500Z DTEND;VALUE=DATE-TIME:20221201T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3288@cern.ch DESCRIPTION:Speakers: Mikhail Tokarev (Joint Institute for Nuclear Researc h)\nThe data [1] on spectra of $K_S^0$ mesons measured by the STAR Collabo ration in $\\rm Au+Au$ collisions at various centralities characterized by different multiplicity densities of negative particles were analyzed in t he $z$-scaling approach [2\,3]. The transverse momentum distributions obta ined in the BES-I program at RHIC were accumulated in seven centrality cla sses from the most central $(0-5)\\%$ to peripheral $(60-80)\\% $collision s in the rapidity range $|y| \n\nhttps://indico.particle.mephi.ru/event/27 5/contributions/3288/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3288/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent results with HYDJET++ model for heavy-ion collisions DTSTART;VALUE=DATE-TIME:20221201T153000Z DTEND;VALUE=DATE-TIME:20221201T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3282@cern.ch DESCRIPTION:Speakers: Gyulnara Eyyubova (SINP MSU)\nThe HYDJET++ event gen erator is a phenomenological model of heavy-ion collisions that treats the collision process as a combination of a soft hydro-type state and a hard state resulting from hard parton scattering.\nOn the one hand\, it allows one to quickly simulate relativistic heavy-ion \ncollisions\, and on the o ther hand\, it reproduces and describes a number \nof experimental phenome na in the soft and hard sector. It also allows \nyou to study many feature s of the interaction as interplay of soft and \nhard processes.\nHere we p resent some selected results of recent studies. Basically\, \nnew results on the correlation of elliptical flows at small and large \ntransverse mom enta at LHC energies are described. Some current \nstudies of the charge b alance function at LHC energies and the \nA-dependence of the flow in heav y-ion collisions are also discussed.\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3282/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3282/ END:VEVENT BEGIN:VEVENT SUMMARY:The Electron-Ion Collider DTSTART;VALUE=DATE-TIME:20221202T140000Z DTEND;VALUE=DATE-TIME:20221202T143000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3228@cern.ch DESCRIPTION:Speakers: Alexei Prokudin ()\nThe Electron-Ion Collider (EIC)\ , a powerful new facility to be built in the United States at the U.S. Dep artment of Energy’s Brookhaven National Laboratory in collaboration with Thomas Jefferson National Accelerator Facility\, will explore the most fu ndamental building blocks of nearly all visible matter. I will talk about the physics program of the EIC and\, in particular\, about the state of th e art of the studies of the polarized and the three-dimensional structure of the nucleon.\n\nhttps://indico.particle.mephi.ru/event/275/contribution s/3228/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3228/ END:VEVENT BEGIN:VEVENT SUMMARY:Clustering in oxygen nuclei and spectator fragments in O–O coll isions at the LHC DTSTART;VALUE=DATE-TIME:20221201T150000Z DTEND;VALUE=DATE-TIME:20221201T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3286@cern.ch DESCRIPTION:Speakers: Aleksandr Svetlichnyi (INR RAS\, MIPT(NRU))\nCollisi ons of oxygen nuclei are planned in future LHC runs to scan the size of co lliding systems at ultrarelativistic energies [1]. As shown by calculatio ns [2\,3]\, the admixture of the alpha-clustered states in O-16 leads to a triangular modulation of elliptic flow from the overlap region of collid ing nuclei. The measurements [4] and modelling [5\,6] of fragmentation o f O-16 projectiles of lower energies of few GeV/nucleon demonstrated the enhanced production of spectator alpha-particles resulting from the alpha -clusterization in O-16.\n \nIn the present work a new version of the Abra sion-Ablation Monte Carlo for Colliders model (AAMCC-MST) is used to simul ate O-16–O-16 collisions at the LHC. The model takes into account pre-e quilibrium clusterization of spectator matter [7\,8] and the admixture of alpha-clustered states in O-16 (AAMCC-MST) [5]. Three nuclear density pr ofiles in O-16 were implemented in AAMCC-MST to sample the positions of ne utrons and protons in O-16 [5]. The cross sections to produce various spe ctator nuclei (He\, Li\, Be\, B\, C\, N) at the LHC and the multiplicity d istributions of spectator alpha-particles are calculated and compared to t he results obtained at lower collision energies. The production of spectat or deuterons is also investigated as a possible indicator of the short-ran ge correlations in nuclei [9]. The obtained results can help in evaluating the performance of Zero Degree Calorimeters in future LHC experiments on O-16–O-16 collisions.\n\nReferences\n\n [1] Z. Citron et al.\, CERN Ye llow Rep. Monogr. 7 (2019) 1159 \n\n [2] W. Broniowsky et al.\, Nucl. Phy s. A 1005 (2021) 121763 \n\n [3] S.H. Lim et al.\, Phys. Rev. C 99 (2019 ) 044904\n\n [4] M. El-Nagdy et al.\, J. Phys. Commun. 2 (2018) 035010\n\ n [5] A.Svetlichnyi et al.\, Phys. Atom. Nucl.\, 2022\, to be published\n \n [6] A. Svetlichnyi et al.\, PoS\, EPS-HEP2021 (2022) 310\n\n [7] R. N epeivoda\, et al.\, Particles 5 (2022) 40 \n\n [8] N.Kozyrev et al. Eur. Phys. J. A 58 (2022) 184\n\n [9] M.Alvioli et al.\, Phys. Lett. B 680 (20 09) 225\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3286/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3286/ END:VEVENT BEGIN:VEVENT SUMMARY:Forward neutrons from electromagnetic dissociation of $^{208}$Pb a t the LHC DTSTART;VALUE=DATE-TIME:20221201T151500Z DTEND;VALUE=DATE-TIME:20221201T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3274@cern.ch DESCRIPTION:Speakers: Uliana Dmitrieva (Institute for Nuclear Research\, R ussian Academy of Sciences)\nExperimental results of ALICE collaboration o n the emission of forward neutrons in ultraperipheral collisions of $^{208 }$Pb nuclei at $\\sqrt{s_{\\mathrm{NN}}}=2.76$ and $5.02$ TeV are reviewed . Electromagnetic dissociation (EMD) events with the lowest multiplicity of 1\, 2 or 3 neutrons dominate at both collision energies. The cross sect ions for 1n – 5n emission with and without protons were measured by mean s of forward zero degree calorimeters (ZDCs). The obtained cross sections for neutron emission accompanied by an arbitrary number of protons can be used to validate various EMD models. According to the Relativistic ELectro magnetic DISsociation model (RELDIS)\, the cross sections of protonless ne utron emission\, measured for the first time by ALICE at $\\sqrt{s_{\\math rm{NN}}}=5.02$ TeV\, can be considered as upper limits for the cross secti ons of the production of the respective secondary nuclei\, $^{207\,206\,2 05\,204\,203}$Pb\, in EMD of $^{208}$Pb.\n\nhttps://indico.particle.mephi. ru/event/275/contributions/3274/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3274/ END:VEVENT BEGIN:VEVENT SUMMARY:Hydrodynamic helicity\, axial anomaly and polarization DTSTART;VALUE=DATE-TIME:20221201T160000Z DTEND;VALUE=DATE-TIME:20221201T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3277@cern.ch DESCRIPTION:Speakers: Oleg Teryaev (JINR)\nThe helicity of quark-gluon med ium is transmitted to spin polarization through axial anomaly. The possibi lities of distinguishing of this mechanism\, incorporating the recent data \, from the thermodynamic one are discussed. The other manifestations of h elicity\, mimicking the chiral magnetic and vortical effects are also cons idered.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3277/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3277/ END:VEVENT BEGIN:VEVENT SUMMARY:Spin Physics Detector (SPD) at NICA DTSTART;VALUE=DATE-TIME:20221202T133000Z DTEND;VALUE=DATE-TIME:20221202T140000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3096@cern.ch DESCRIPTION:Speakers: Amaresh Datta (JINR)\nThe Spin Physics Detector (SPD ) at the Nuclotron based Ion Collider fAcility (NICA) is a multi-purpose e xperiment designed to study nucleon spin structure in the three dimensions . With capabilities to collide polarized protons and deuterons of energies up to 27 GeV with luminosity up to $10^{32} \\rm cm^{-2} \\ s^{-1}$ for p roton (an order of magnitude less for deuteron)\, the experiment will allo w measurements of cross-sections and spin asymmetries sensitive to the unp olarized and various polarized (helicity\, Sivers\, Boer-Mulders) gluon di stributions inside the nucleons. Results from the SPD will be complimentar y to the present high energy spin experiments at the RHIC facility or futu re experiments like the EIC(BNL) and AFTER(LHC). It will provide data in m oderate and large Bjorken-x for much improved gobal analyses of spin struc tures of the basic building blocks of Nature. With polarized deuteron coll isions\, SPD will be the unique laboratory for probing tensor polarized gl uon distributions. In addition\, there are also possibilities of colliding other light nuclei like Carbon at reduced collision energy and luminosity at the first stage of the experiment.\n\nhttps://indico.particle.mephi.ru /event/275/contributions/3096/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3096/ END:VEVENT BEGIN:VEVENT SUMMARY:NON-EQUILIBRIUM HYDRODYNAMIC APPROACH AND EMISSION OF HIGH-ENERGY SECONDARY PARTICLES IN COLLISIONS OF HEAVY IONS OF INTERMEDIATE ENERGIES DTSTART;VALUE=DATE-TIME:20221201T143000Z DTEND;VALUE=DATE-TIME:20221201T144500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3285@cern.ch DESCRIPTION:Speakers: Alexander D'yachenko (Petersburg State Transport Uni versity)\nA.T. D’yachenko$^{1\,2}$\n\n$^{1}$ National Research Center “Kurchatov Institute” B.P. Konstantinov Petersburg Nuclear Physics Ins titute\, Gatchina\, Russia\;\n$^{2}$ Emperor Alexander I Petersburg State Transport University\, St. Petersburg\, Russia\n\nWe managed to completely describe the spectra of cumulative protons\, pions and photons for the co llision of carbon nuclei with a beryllium target in the energy range of 0. 3-3.2 GeV per nucleon obtained in the ITEP experiments [1\,2\,3]. To do th is\, it was proposed to solve the kinetic equation together with the solut ion of the equations of hydrodynamics [4\, 5]. When describing these spect ra\, the correction for the microcanonical distribution [4\, 5] was taken into account\, and the contribution of the fragmentation process was also taken into account for the proton yields. It is shown that our description of the experimental data is better than the cascade models and the quantu m molecular dynamics (QMD) model built into the GEANT4 package and the HSD (hadron string dynamics) model [6]. \nOur approach is applicable to colli sions of both light and heavy nuclei\, which can be seen from a comparison of the description of the proton distributions in transverse momentum in the Au+Au reaction at an energy of 1.48 GeV per nucleon with experimental data and other theoretical approaches based on solving the Boltzmann equat ion\, the model of quantuml molecular dynamics\, etc. [7]. This can be ext ended to the energy range of the accelerator complex NICA located at the J INR (Dubna) in order to study the quark-gluon plasma \nThe contribution of the effects of short-range correlations (SRC)\, which has recently receiv ed much attention [8]\, was also studied by us. As a result\, it turned ou t that these effects are included in our approach\, since we successfully describe the experimental data on the spectra of hard photons [9]\, which are described in [8] with the addition of a high-momentum component. \n\n1 .B.M. Abramov et al.\, Phys. Atom. Nucl. 78\, 373 (2015).\n\n2.I.G. Alekse ev et al.\, Phys. Atom. Nucl. 78\, 936 (2015)\n \n3 B.M. Abramov et al\, P hys. Atom. Nucl. 84\, 467 (2021).\n \n4.A. T. D'yachenko\, I. A. Mitropols ky\, Phys. Atom.Nucl. 83\, 558 (2020).\n\n5.A. T. D’yachenko\, I. A. Mit ropolsky\, EPJ Web Conf. 204\, 03018 (2019)\n\n6 W. Cassing\, E. Bratkovsk aya\, Phys. Rept. 308\, 65 (1999).\n\n7.E. E. Kolomeitsev et al. J Phys. G 31 741(2005)\n\n8.W.M. Guo\, B.A. Li\, G.C. Yong\, Phys. Rev. C 104.03460 3 (2021)\n\n9.J. Stevenson et al.\, Phys. Rev. Lett. 57\, 555 (1986).\n\nh ttps://indico.particle.mephi.ru/event/275/contributions/3285/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3285/ END:VEVENT BEGIN:VEVENT SUMMARY:The Baryonic Matter@Nuclotron Experiment: upgrade and physics prog ram overview. DTSTART;VALUE=DATE-TIME:20221202T130000Z DTEND;VALUE=DATE-TIME:20221202T133000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3095@cern.ch DESCRIPTION:Speakers: Mikhail Mamaev (NRNU MEPhI)\nThe upcoming run at the Baryonic Matter at Nuclotron (BM@N) experiment at JINR in Dubna has its a im to study the properties of dense baryonic matter\, such as the equation -of-state and new microscopic degrees-of-freedom. The Xe+CsI collisions at the beam energies of up to 4A GeV are believed to produce strongly intera cting matter which emerge at the core of compact stellar objects such as n eutron stars. To study the properties of this matter\, a large variety of observables are commonly used including the yields and multi-differential distributions of (multi-) strange particles\, the collective flow of ident ified particles\, fluctuation of conserved quantities\, and hypernuclei. T he existing BM@N setup is upgraded with a highly granulated and fast hybri d tracking system\, a time-of-flight system\, a scintillation detector wit h a quartz hodoscope\, a neutron detector\, and a forward calorimeter in o rder to perform such measurements. We will present the BM@N physics progra m\, the detector upgrades\, and some results of physics performance studie s.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3095/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3095/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the MPD Experiment at NICA DTSTART;VALUE=DATE-TIME:20221202T123000Z DTEND;VALUE=DATE-TIME:20221202T130000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3094@cern.ch DESCRIPTION:Speakers: Arkadiy Taranenko (MEPhI)\nThe Multi-Purpose Detecto r (MPD) is now under construction in the Nuclotron-based Ion Collider fAc ility (NICA) at the Joint Institute\nfor Nuclear Research (JINR) in Dubna. The MPD is designed to study heavy-ion collisions in the energy range $\\ sqrt{s_{NN}}=4-11$ GeV to\nprobe the QCD phase diagram at modest temperatu res and high baryon densities.\nThe MPD is realized by an international co llaboration\, which consists of 31 institutions from 10 countries with mor e than 450 participants.\nIn its initial stage of operation\, planned to s tart at the end of 2023\, the MPD will study Bi+Bi collisions at $\\sqrt{s _{NN}}=9.2$ GeV.\nIn this talk\, we review current status of the MPD detec tor and its physics program\, with emphasis on the physics measurements fe asible with the first beams.\n\nhttps://indico.particle.mephi.ru/event/275 /contributions/3094/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3094/ END:VEVENT BEGIN:VEVENT SUMMARY:STAR experiment results from Beam Energy Scan program DTSTART;VALUE=DATE-TIME:20221202T110000Z DTEND;VALUE=DATE-TIME:20221202T113000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3093@cern.ch DESCRIPTION:Speakers: Alexey Aparin (JINR)\nThe STAR experiment at RHIC ha s been put into operation more than two decades ago and since then has pro vided unique data on relativistic heavy-ion collisions. One of the main to pics of interest for STAR's experimental program is related to the transit ion from regular hadronic matter to the quark-gluon plasma state. To shed light on the mechanism of such transition and its exact location on the QC D phase diagram\, RHIC has performed two phases of the Beam Energy Scan pr ogram lowering collision energy from 200 GeV to 3 GeV. Large-statistics sa mples obtained during BES-II program at both collider and fixed-target mo des allow us to possibly locate the phase boundary and the Critical Point. \n\nThis report will summarize results obtained from BES-I and new results from some of the BES-II energies. These can help bridge STAR to new exper iments in the field (MPD @ NICA\, CBM @ FAIR\, JPARC) to better shape the physics programs of those experiments.\n\nhttps://indico.particle.mephi.ru /event/275/contributions/3093/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3093/ END:VEVENT BEGIN:VEVENT SUMMARY:Overview of recent heavy-ion collision results from ALICE DTSTART;VALUE=DATE-TIME:20221202T103000Z DTEND;VALUE=DATE-TIME:20221202T110000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3092@cern.ch DESCRIPTION:Speakers: Evgeny Kryshen (Petersburg Nuclear Physics Institute )\nThe ALICE experiment is dedicated to the studies of the hot and dense Q CD medium\, the quark-gluon plasma\, which can be created in ultrarelativi stic heavy-ion collisions at the LHC. In this presentation\, we will highl ight recent ALICE results from LHC Run 2 that provide an important step to wards our understanding of the QCD matter explored with heavy-ion collisio ns. We will also present latest news on the ALICE performance at the start of LHC Run 3.\n\nhttps://indico.particle.mephi.ru/event/275/contributions /3092/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3092/ END:VEVENT BEGIN:VEVENT SUMMARY:The discoveries of the Borexino experiment on how and why the Sun and the stars shine DTSTART;VALUE=DATE-TIME:20221201T110000Z DTEND;VALUE=DATE-TIME:20221201T114000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3229@cern.ch DESCRIPTION:Speakers: Gianpaolo Bellini (University of Milano)\nA summary what we have obtained with Borexino\n\nhttps://indico.particle.mephi.ru/ev ent/275/contributions/3229/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3229/ END:VEVENT BEGIN:VEVENT SUMMARY:Review and Status of Neutrino Oscillation Studies from Long Baseli ne Accelerator Based Experiments DTSTART;VALUE=DATE-TIME:20221201T133000Z DTEND;VALUE=DATE-TIME:20221201T140000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3091@cern.ch DESCRIPTION:Speakers: Vittorio Paolone (University of Pittsburgh (US))\nA review and status of neutrino oscillations studies from long baseline acce lerator based experiments will be presented. An emphasis will be placed on recent results from running experiments such as T2K and NOvA. In addition the status plus plans of future experiments DUNE and HyperK will also be discussed.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/309 1/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3091/ END:VEVENT BEGIN:VEVENT SUMMARY:High-energy astronomy with the Baikal-GVD neutrino telescope DTSTART;VALUE=DATE-TIME:20221201T130000Z DTEND;VALUE=DATE-TIME:20221201T133000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3090@cern.ch DESCRIPTION:Speakers: Grigory Safronov (INR RAS)\nNeutrino is considered a s an ideal astronomical messenger thanks to not being deflected or absorbe d by interstellar medium. Detection of neutrinos from distant high-energy cosmic accelerators has been a long-standing problem emerged in the last q uarter of the 20-th century. And only in 2013 was the diffuse cosmic neutr ino flux discovered by the 1 km3 -scale IceCube neutrino telescope at the South Pole. Nevertheless sources of cosmic neutrino remain unknown up to t he present day. The Baikal-GVD neutrino telescope being built in the Lake Baikal is the largest detector of this kind in the Northern Hemisphere. Pr esently an instrumented volume of the detector reaches ~0.5 km3 which allo ws the telescope to start contributing to the cosmic neutrino origin quest . In this talk we give an overview of high-energy neutrino astronomy and d iscuss the status and main results of the Baikal-GVD experiment.\n\nhttps: //indico.particle.mephi.ru/event/275/contributions/3090/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3090/ END:VEVENT BEGIN:VEVENT SUMMARY:Dark Matter direct detection: experimental review DTSTART;VALUE=DATE-TIME:20221201T103000Z DTEND;VALUE=DATE-TIME:20221201T110000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3089@cern.ch DESCRIPTION:Speakers: Bianca Bottino (INFN Sez. Genova)\nThe existence of dark matter has been discussed for more than a century. Today we have a co mpelling body of evidence for this elusive component of the Universe\, bas ed on a variety of observations\, at different scales\, but no experiment has detected dark matter yet. This talk will focus on direct detection of dark matter. \nThe null result of both direct detection and LHC searches h as produced a paradigm shift in the community that is now expanding the hu nt to cover 90 orders of magnitude in mass. Current and next generation of detectors will push the sensitivity for WIMPs - the strongest dark matter candidate since the 1980s - down to the neutrino floor. In particular the physics case of different dark matter direct detection experiments will b e presented and the different and complementary techniques which are being applied or considered will be discussed\, summarizing their features and latest results obtained. A special focus will be made on TPC-related proje cts\; experiments using noble liquids have presently a leading role to con strain interaction cross sections of a wide range of dark matter candidate s and gaseous detectors are very promising to explore specifically low mas s dark matter as well as to measure directionality.\n\nhttps://indico.part icle.mephi.ru/event/275/contributions/3089/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3089/ END:VEVENT BEGIN:VEVENT SUMMARY:Serendipitous discovery of CMB foregrounds DTSTART;VALUE=DATE-TIME:20221130T140000Z DTEND;VALUE=DATE-TIME:20221130T143000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3088@cern.ch DESCRIPTION:Speakers: Diego Garcia Lambas (Universidad Nacional de Cordoba )\nIn this talk I will review the presence of recently reported foreground s in the cosmic microwave background (CMB) radiation associated with exten ded regions surrounding nearby galaxies. Using the cross correlation of Pl anck and WMAP maps and the 2MRS galaxy catalogue it is found that the mean temperature radial profiles around nearby galaxies at $ cz\\le 4500$ km s $^{−1}$ show a statistically significant systematic decrease of $\\sim15 \\mu$K extending up to several degrees. This effect strongly depends on t he galaxy morphological type and is significantly stronger for the largest (luminous) late-type galaxies. Our results show that the presence of thes e statistically relevant foregrounds in the CMB maps should be considered in detailed cosmological studies and current CMB anomalies analysis.\n\nht tps://indico.particle.mephi.ru/event/275/contributions/3088/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3088/ END:VEVENT BEGIN:VEVENT SUMMARY:Early galaxies: observational census DTSTART;VALUE=DATE-TIME:20221130T133000Z DTEND;VALUE=DATE-TIME:20221130T140000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3087@cern.ch DESCRIPTION:Speakers: Olga Silchenko (Sternberg Astronomical Institute of the Lomonosov MSU)\nAccording to the prescriptions of the conventional cos mological LCDM-model\, first galaxies had to start their formation when hi erarchically assembled dark halos reached 100 million solar masses. They a re thought to be dwarf disk galaxies. In fact\, the earliest galaxy is obs erved now at the redshift of z=11\, about 0.5 Gyr after the Big Bang\, and it is much more massive than a hypothetical first-generation galaxy in th e theory. Perhaps\, it is related to the method of searching for high-reds hift galaxies due to a so called ‘astronomical selection’ effect. Howe ver\, all we know now about the galaxies having lived during the first bil lion year of the Universe evolution can be attributed mostly to ‘Ly-brea k’ galaxies – those with the typical stellar mass of 10 billion solar masses\, with the star formation rate of a few dozen solar mass per year\, and nearly solar chemical composition. All the hopes to find more early g alaxies at z>12 are now related to the James Webb Space Telescope which su rveys the sky with an unprecedent high spatial resolution in the mid-infra red spectral range where the peak of galaxy luminosity is expected for obj ects at z>12.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3087/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3087/ END:VEVENT BEGIN:VEVENT SUMMARY:Primordial black holes\, early galaxies\, and antimatter in the Ga laxy DTSTART;VALUE=DATE-TIME:20221130T130000Z DTEND;VALUE=DATE-TIME:20221130T133000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3086@cern.ch DESCRIPTION:Speakers: Alexander Dolgov ()\nRecent data of JWST indicate to surprisingly rich population of the early universe at redshifts exceeding 15 by the well developed galaxies in strong contradiction with the conven tional expectations. These picture was essentially predicted long ago by t he the mechanism of massive and super massive PBH formation in the very ea rly universe\, which could seed galaxy formation. \nAccording to this mech anism\, our Galaxy may have quite noticeable amount of antimatter\, in par ticular in the form of antistars\, antinuclej\, and positrons which is str ongly indicated by the observation of the several last years.\n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3086/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3086/ END:VEVENT BEGIN:VEVENT SUMMARY:Gravitational quantum states and study of free fall of antihydroge n in GBAR experiment DTSTART;VALUE=DATE-TIME:20221130T110000Z DTEND;VALUE=DATE-TIME:20221130T113000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3085@cern.ch DESCRIPTION:Speakers: Alexei Voronin ()\nAn overview of GBAR experiment in CERN on antihydrogen gravitational mass measurement is given. The use of interference of gravitational quantum states of antihydrogen in the field of the Earth is discussed in view of precision measurement of gravitationa l mass of antihydrogen.\n\nhttps://indico.particle.mephi.ru/event/275/cont ributions/3085/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3085/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches for alpha condensate states in relativistic nuclear fragm entation DTSTART;VALUE=DATE-TIME:20221130T103000Z DTEND;VALUE=DATE-TIME:20221130T110000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3080@cern.ch DESCRIPTION:Speakers: Pavel Zarubin (Joint Institute for Nuclear Research) \nThe BECQUEREL experiment is aimed at solving topical problems in nuclear clustering physics [1]. The used method of nuclear track emulsion (NTE) m akes it possible\, due to its unique sensitivity and spatial resolution\, to study by means of the unified approach multiple final states arising in dissociation of relativistic nuclei. Currently\, the research has been fo cused on the theoretical concept of α-particle Bose- Einstein condensate (αBEC) – the ultra cold state of several S-wave α-particles near coupl ing thresholds. The unstable 8Be nucleus is described as 2αBEC\, and the 12C(0+2) excitation or Hoyle state (HS) as 3αBEC. Decays 8Be → 2α and 12C(0+2) → 8Beα can serve as signatures for more complex αBEC decays. Thus\, the 0+6 state of the 16O nucleus at 660 keV above the 4α threshol d\, considered as 4αBEC\, can sequentially decay 16O(0+6) → α12C(0+2) or 16O(0+6) → 28Be(0+). Confirmation of the existence of this and more c omplex forms of αBEC could provide the basis to expand scenarios for the synthesis of medium and heavy nuclei in nuclear astrophysics.\nThe conside ration of αBEC as an invariant phenomenon indicates an opportunity of its search in the relativistic fragmentation. A practical alternative is prov ided by NTE layers longitudinally exposed to relativistic nuclei. In them\ , the invariant mass of ensembles of He and H fragments can be determined from emission angles in the approximation of conservation of momentum per nucleon of a parent nucleus. Due to extremely small energies and widths\, the 8Be and HS decays\, as well as 9B → 8Bep\, are identified in light n ucleus fragmentation by an upper constraint on the invariant mass [2].\nHa ving been tested\, this approach has been used to identify 8Be and HS and search for more complex states of αBEC in fragmentation of medium and hea vy nuclei. Recently\, based on the statistics of dozens of 8Be decays\, we have found more probability of detecting 8Be in the event with increasing the number of relativistic α-particles. It has been concluded that contr ibutions of 9B and HS decays also grow [3]. The exotically large sizes and lifetimes of 8Be and HS allow us to assume an opportunity of synthesizing αBEC by successively connecting the emerging α-particles 2α → 8Be\, 8Beα → 12C(0+2)\, 12C(0+2)α → 16O(0+6)\, 28Be → 16O(0+6) and furth er\, with a decreasing probability at each step\, when γ-quanta or recoil particles are emitted. The main task of the forthcoming stage of the proj ect is to clarify the relation between the appearance of 8Be and HS and α -ensemble multiplicities and on this basis search for decays of the 16O(0+ 6) state. In this regard\, the purpose is to measure multiple channels of 84Kr fragmentation below 1 GeV per nucleon. There is a sufficient number o f NTE layers\, whose transverse scanning by means of the motorized microsc ope Olympus BX63 makes it possible to achieve the required statistics. A s tatus of the searches is overviewed.\n\n[1] P.I. Zarubin\, Lect. Notes in Phys. 875\, Clusters in Nuclei\, Volume 3. Springer Int. Publ.\, 51 (2013) \; arXiv: 1309.4881.\n[2] D.A. Artemenkov et al.\, Eur. Phys. J. A 56 (202 0) 250\; arXiv: 2004.10277.\n[3] A.A. Zaitsev et al.\, Phys. Lett. B 820 ( 2021) 136460\; arXiv: 2102.09541.\n\nhttps://indico.particle.mephi.ru/even t/275/contributions/3080/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3080/ END:VEVENT BEGIN:VEVENT SUMMARY:Thermo-Electric and Magnetic effects on a self iteracting scalar t heory DTSTART;VALUE=DATE-TIME:20221129T133000Z DTEND;VALUE=DATE-TIME:20221129T140000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3084@cern.ch DESCRIPTION:Speakers: Marcelo Loewe (Pontificia Universidad Catolica de Ch ile)\nWe first analize the effects of an electric field on the effective p otential in a self interacting scalar theory\, finding electric anticataly sis in the weak field region\, i.e. a critical temperature that diminishes as function of the intensity of the electric field. The physical situatio n corresponds to collision between heavy and a light nuclei\, for example Au-Cu collision\, where due to the imbalance in the number of protons in t he initial state\, a strong electric field in the plane of the collission appears. In a second step we consider the effects of an alectric and a mag netic field. perpendicular to each other again in the scenario of a self i nteracting scalar theory. In this case\, we have inverse magnetic-electric catalysis (IMEC)\, where both fields cooperate in the diminishing behavio r of the critical temperature. We present also some results concerning the mass evolution.\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3084/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3084/ END:VEVENT BEGIN:VEVENT SUMMARY:Cosmophysical research with GAMMA-400 DTSTART;VALUE=DATE-TIME:20221129T130000Z DTEND;VALUE=DATE-TIME:20221129T133000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3083@cern.ch DESCRIPTION:Speakers: Nikolay Topchiev (Lebedev Physical Institute)\, Alex ey Leonov (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute))\nThe development of the GAMMA-400 gamma-ray telescope for cosmophysical research continues under the Russian Federal Space Progr am. The GAMMA-400 experiment will be implemented aboard the Russian astrop hysical space observatory\, which will be operating in a highly elliptic o rbit during 7 years to provide new data on gamma-ray emission and cosmic-r ay electron + positron fluxes mainly from the Galactic plane\, Galactic Ce nter\, and the Sun. The main mode of observations will be the continuous p oint-source mode with duration of up to ~100 days. The GAMMA-400 gamma-ray telescope will study high-energy gamma-ray emission up to several TeV and cosmic-ray electrons + positrons up to 20 TeV. GAMMA-400 will have the ne ver-achieved angular resolution\, the high energy and time resolutions\, a s well as very good separation efficiency of gamma rays from cosmic-ray ba ckground and electrons + positrons from protons. The distinctive feature o f GAMMA-400 is the wonderful angular resolution for energies >30 GeV (~0.0 1° for Eγ = 100 GeV) that exceeds resolutions of the space-based and gro und-based gamma-ray telescopes by a factor of 5-10. GAMMA-400 studies can reveal gamma-ray emission from annihilation or decay of dark matter partic les\, identify many unassociated discrete sources\, explore the structure of extended sources\, improve the data on cosmic-ray electron + positron s pectra for energies >30 GeV.\n\nhttps://indico.particle.mephi.ru/event/275 /contributions/3083/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3083/ END:VEVENT BEGIN:VEVENT SUMMARY:The next-to-leading BFKL for Mueller-Navelet dijets with large rap idity separation and jet veto DTSTART;VALUE=DATE-TIME:20221201T164500Z DTEND;VALUE=DATE-TIME:20221201T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3263@cern.ch DESCRIPTION:Speakers: Anatolii Egorov (Petersburg Nuclear Physics Institut e NRC Kurchatov Institute & Peter the Great St. Petersburg Polytechnic Un iversity)\nThe calculation based on next-to-leading logarithm (NLL) approx imation for Balitsky-Fadin-Kuraev-Lipatov (BKFL) evolution is discussed f or Mueller-Navelet (MN) dijet production cross section as well as ratios o f cross sections with veto as functions of rapidity separation $\\Delta y$ between jets in dijet. The NLL BFKL calculations employ optimal renormali zation scale procedure generalized for non-abelian theories by Brodsky-Fad in-Kim-Lipatov-Pivovarov. The veto on additional jet activity above $p_{T\ \mathrm{veto}}$ is accounted with Banfi-Marchesini-Smye approach. The resu lts are compared to the CMS measurements in proton-proton collisions at $\ \sqrt{s}$ = 7 and 2.76~TeV.\n\nhttps://indico.particle.mephi.ru/event/275/ contributions/3263/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3263/ END:VEVENT BEGIN:VEVENT SUMMARY:Correction to Bjorken energy density calculations for central A-A collisions DTSTART;VALUE=DATE-TIME:20221201T163000Z DTEND;VALUE=DATE-TIME:20221201T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3258@cern.ch DESCRIPTION:Speakers: Olga Shaposhnikova ()\nO.M. Shaposhnikova1\, A.A.Mar ova 2\, G.A. Feofilov2\,*\n\n1 St. Petersburg Governor's Physics and Math ematics Lyceum No. 30\n\n2 Federal State Budgetary Educational Institution of Higher Education "Saint-Petersburg State University"\, Saint Petersbur g\, 199034 Russia\n\n*E-mail: g.feofilov@spbu.ru\n\nAbstract: \n\nWe cons ider a correction to the Bjorken energy density[1] calculations [2-6 ] wh ere the information is usually taken from the nucleus-nucleus collisions e vents selected in a certain centrality class. The last one is usually def ined in terms of some observarble (multiplicity of particles\, number of p articipating nucleons\, transverse energy) used as a proxy to the impact paramemer b. However\, due to the natural dominance of peripheral collisio ns in any class of \ncentrality\, the relevant mean values of the imp act paramemer will be always shifted towards some higher values. For exa mple\, it is possible to show that in case of 0-5% centrality class of A-A collisions\, the value is considerably shifted from 0 ( ~ 2 fm)\, ther efore in this case the corresponding value of ST - the transverse interact ion area of two overlapping \ncolliding disks\, should not be taken to be that of a circle. It appears to be smaller\, thus resulting in the high er values of energy density finally calculated for a given class.\n\nWe p resent our estimates of the Bjorken energy density in 0-5% centrality cl asses events in a broad range of heavy-ion collision energies (from SPS t o the LHC) using the available experimental information on mean multiplic ity of charged particles and mean transverse momenta. We make the analyti cal aproximation of the updated Bjorken energy excitation function\, obta ined in our study for these very central A-A collisions\, and we compare \nit to the previously obtained ones [7\,8]. We present also and discuss the relevant energy dependences of pion\, kaon and proton contributions to the Bjorken energy density that are also estimated in our study.\n\nThi s work was supported by St. Petersburg State University (project № 93025 435).\nReferences:\n\n1) J. D. Bjorken\, Phys. Rev. D 27\, 140 (1983).\n\n 2) B. I. Abelev\,9 M. M. Aggarwal et al. Phys.Rev. C 79\, 034909 (2009).\ n\n3) K. Adcox\,40 S. S. Adler et al. arXiv:nucl-ex/0104015 v2(2001).\n\n 4) B. Abelev et al.\, Phys.Rev. C 88\, 044909 (2013).\n\n5) D. Adhikari\, H. Albataineh et al.\, Phys.Rev.Lett 126\, 172502 (2021).\n\n6) S. S. Adle r\,5 S. Afanasiev et al.\, Phys.Rev. C 71\, 034908 (2005).\n\n7) T. Mende nhall\, Z.-W. Lin\, Phys. Rev. C 103\, 024907 (2021). \n \n8) R.Sahoo et al.\, Advances in Hig h Energy Physics\, v. 2015\, 612390 (2015).\n\nhttps://indico.particle.mep hi.ru/event/275/contributions/3258/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3258/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing the String Clustering Model in pp interactions at LHC ener gies DTSTART;VALUE=DATE-TIME:20221201T161500Z DTEND;VALUE=DATE-TIME:20221201T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3259@cern.ch DESCRIPTION:Speakers: Vladimir Vechernin (St. Petersburg State University) \nMultiple particle production in pp interactions at LHC energies is consi dered in a model with quark-gluon strings (color flux tubes) as sources\, assuming the string cluster formation. Within this model multiplicity dist ributions of charged particles\, their combinants and the properties of th e strongly intense variable Σ\, which characterizes the correlations betw een the number of particles in two observation windows separated in rapidi ty\, are studied. We use a Regge-like quasi-eikonal approach to find the d istribution of strings in the transverse plane of pp-collision. This allow s us to take into account string fusion processes leading to the formation of string clusters using a finite lattice (grid) in the impact parameter plane. Analytical calculations supplemented by MC simulation\, make it pos sible to find the multiplicity distributions and corresponding combinants as well as the dependences of the variable Σ both on the width of the obs ervation windows and on the size of the gap between them for different ini tial energy and centrality of pp collisions.\n\nWe show that in pp collisi ons at LHC energies\, string fusion effects leading to the formation of st ring clusters have a significant effect on the behavior of considered obse rvables. We see that the so-called modified combinants found from the calc ulated multiplicity distributions are indeed very sensitive to the shape o f the multiplicity distribution spectra\, and that our string clustering m odel reproduces the general experimental behavior of the combinants obtain ed from ALICE and CMS data\, in particular\, their oscillations. \n\nWe al so demonstrate that the experimentally observed dependence of the strongly intensive variable Σ on the initial energy and centrality of pp collisio ns can be explained only in the presence of sources of different types\, t he role of which in our model is played by single strings and clusters for med by the fusion of several strings. It is also shown that a comparison o f the results of our model with the preliminary experimental data of ALICE makes it possible to extract the parameters of clusters with different nu mbers of merged strings\, in particular\, to find their two-particle corre lation functions. \n\nThe research was supported by the SPbSU project\, No 93025435.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/325 9/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3259/ END:VEVENT BEGIN:VEVENT SUMMARY:Interacting color strings approach in modeling of rapidity correla tions DTSTART;VALUE=DATE-TIME:20221201T160000Z DTEND;VALUE=DATE-TIME:20221201T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3262@cern.ch DESCRIPTION:Speakers: Daria Prokhorova (Saint Petersburg State University) \nPhenomenological model of color quark-gluon strings as particle emitting sources [1] is developed and used to study correlations in rapidity of di fferent event observables such as multiplicity and mean particle transvers e momenta [2]. The color strings dynamics at initial stages of the relativ istic collisions is considered both in rapidity dimension [3] and in trans verse plane [4]. The former is defined by the partons momenta at string en ds\, while the latter is represented by strings interaction via sigma meso n exchange. Providing this 3-d density\, strings can partially overlap\, w hich leads to their fusion and modifications of production characteristics [5]. Model results are compared with the PYTHIA event generator and avail able data on p+p inelastic interactions.\n\nAcknowledgements. This researc h has been conducted with financial support from St. Petersburg State Univ ersity (project No 93025435).\n\n1. D. S. Prokhorova and V. N. Kovalenko\, Phys. Part. Nucl. 51\, 323 (2020)\n2. V. Vechernin\, Nuclear Physics A 93 9\, 21 (2015)\n3. C. Shen and B. Schenke\, Phys. Rev. C 105\, 064905 (2022 ) \n4. T. Kalaydzhyan\, E. Shuryak\, Phys. Rev. C 90(1)\, 014901 (2014)\n5 . M.A. Braun\, C. Pajares\, Phys. Lett. B 287\, 154 (1992)\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3262/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3262/ END:VEVENT BEGIN:VEVENT SUMMARY:Model analysis of transverse momentum fluctuations in NICA and SPS energy range DTSTART;VALUE=DATE-TIME:20221201T154500Z DTEND;VALUE=DATE-TIME:20221201T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3261@cern.ch DESCRIPTION:Speakers: Agniia Zviagina (Saint-Petersburg State University)\ nExperimentally\, correlations between multiplicity of charge particles an d the mean transverse momentum were seen in $p+p$ collisions from the high est SPS energy to the LHC energy. The extension of the experimentally esta blished pattern of the change from negative correlations at energies $\\sq rt{s}$ = 17–40 GeV by measurements at lower energies is particularly sig nificant [1]. This set of results can make a significant contribution to t he development of theoretical models and approaches. It was shown that the average transverse momentum is sensitive to changes in bulk viscosity\, s o experimental data on the study of correlations between mean transverse m omentum and multiplicity of charge particles may impose significant restri ctions on the relativistic hydrodynamic model [2]. Previously\, in the SMA SH and EPOS models\, a non-trivial dependence of strongly intensive variab les on the collision energy was shown\, namely\, for the $\\Delta[p_{t}\, N]$ [3] and $\\langle N \\rangle D[p_{t}\, N]$ [4] (two-particle pt correl ation). It was also shown that the second and third moments of the transve rse momentum deviate from the picture of independent sources\, which is co nfirmed by experimental data obtained from the collision of $Au+Au$ at an energy of 200 MeV [5]. Between the EPOS and SMASH models\, a discrepancy w as found in the third order cumulant pt (skewness) dependency on collision energy. In this investigation\, for a more complete study of correlations \, we will analyze the dependence of strongly intensive quantities and sec ond and third moments on energy using PHSD[6] and UrQMD[7] models which c ombines the string model and resonances.\n\nAcknowledgements. This researc h has been conducted with financial support from St. Petersburg State Univ ersity (project No 93025435).\n\n [1] N. Armesto et al.\, Phys. of Atom. N ucl.\, 71. 2087-2095 (2008)\n\n [2] S. Ryu et al.\, Phys. Rev. Lett.\, 115 \, 132301. (2015)\n\n [3] M. Gorenstein\, M. Gazdzicki\, Phys. Rev. C 84\, 014904 (2011)\n\n [4] M. Cody et al.\, arXiv:2110.04884 [nucl-th] (2022)\ n\n [5] X.-N. Wang\, M. Gyulassy\, Phys. Rev. D. 44. 3501-3516 (1992)\n\n [6] E. Bratkovskaya et al.\, arXiv:1908.00451 [nucl-th] (2019)\n\n [7] M. Bleicher et al.\, arXiv:hep-ph/9909407 [hep-ph] (1999).\n\nhttps://indico. particle.mephi.ru/event/275/contributions/3261/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3261/ END:VEVENT BEGIN:VEVENT SUMMARY:Towards studies of QGP at NICA DTSTART;VALUE=DATE-TIME:20221201T153000Z DTEND;VALUE=DATE-TIME:20221201T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3260@cern.ch DESCRIPTION:Speakers: Vladimir Uzhinsky ()\nAs known\, the NICA accelerato r facility is creating in Dubna\, Russia. Two experiments are planned at N ICA - Spin Physics Detector (SPD) and Multi Purposes Detector (MPD). The a im of the SPD experiment is a study of spin effects in polarized proton-pr oton and deuteron-deuteron collisions at high energies\, and an extraction of gluon distribution function of nucleons. The MPD experiment is going t o study in details the transition from ordinary matter to the quark-gluon plasma (QGP). It is assumed that the transition can take place at NN cente r of mass energy about 10 GeV. Studies of collective flow effects\, partic le composition and so on are foreseen at MPD. But modern experiments perfo rmed within the Beam Energy Scan (BES) program of RHIC al low energies do not show bright results. Thus\, additional possibilities of experimental s tudies have to be considered. Recently\, we have analyzed experimental dat a by the NA61/SHINE collaboration on Ar+Sc interactions at 13\, 19\, 31\, 75 and 150 GeV/c on projectile nucleon in the target rest frame within the framework of Geant4 FTF (Fritiof) model. The model does not assume a crea tion of QGP. The model well describes negative charged pion spectra in Ar+ Sc collisions with 0 – 5 % centralities at momenta 13\, 19\, 31 and 40 G eV/c. At higher momenta\, the model underestimates the data leaving a room for QGP. Thus\, we conclude that QGP can be appeared at energies larger t han 9 GeV. General features of Be-7 + Be-9 interactions studied also by th e collaboration are described well by the FTF model at all pointed energie s. Though\, there is a problem with a reproduction of K+ meson spectra. Th e problem and FTF model results will be presented in our report.\n\nhttps: //indico.particle.mephi.ru/event/275/contributions/3260/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3260/ END:VEVENT BEGIN:VEVENT SUMMARY:Towards studies of 2-particles Pt correlations in hadronic interac tions at NICA DTSTART;VALUE=DATE-TIME:20221201T151500Z DTEND;VALUE=DATE-TIME:20221201T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3257@cern.ch DESCRIPTION:Speakers: Aida Galoyan (JINR\, Dubna)\, Vladimir Uzhinsky ()\n Spin Physics Detector (SPD) will be created at NICA accelerator facility i n Dubna\, Russia. One of the aims of the experiment is a study of spin eff ects in polarized proton-proton and deuteron-deuteron collisions at high e nergies. The other very important aim is an extraction of gluon distributi on function of nucleons. Minimal bias interactions will be studied also. W e will consider problems of soft hadronic collisions what can be investiga ted\, namely\, average Pt correlations with Feynman-x variable (xF) of pro duced particles\, and 2-particle Pt correlations. The LEBC-EHS collaborati on presented in 1991 Pt-xF correlations in pp-interactions for Pi+-\, K+- mesons\, anti-protons and protons at Plab=400 GeV/c. The correlations grow up very fast at xF-> 1. Monte Carlo model – FRITIOF existing at that ti me\, could not be able to quantitively describe the data. A modern FRITIOF model implemented in the Geant4 package (FTF model) also has some problem s. We will present FTF results in a comparison with PYTHIA model ones. In order to understand a nature of the correlations\, we propose to study 2-p article Pt correlations at future SPD experiment. Essence of the last corr elations will be also considered.\n\nhttps://indico.particle.mephi.ru/even t/275/contributions/3257/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3257/ END:VEVENT BEGIN:VEVENT SUMMARY:Resonant channels in interactions of neutrinos with photons DTSTART;VALUE=DATE-TIME:20221201T150000Z DTEND;VALUE=DATE-TIME:20221201T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3268@cern.ch DESCRIPTION:Speakers: Ibragim Alikhanov (North-Caucasus Federal University )\nThe interaction of neutrinos with photons at high energies is considere d within the standard electroweak theory. It is pointed out that the theor y admits the presence of resonant channels in the production of massive bo sons in neutrino$-$photon reactions. Some consequences of the existence of such channels for scattering of neutrinos on atomic nuclei are discussed. In particular\, we show the possibility of excitations of the CP-conjugat e of the Glashow resonance in large-volume neutrino detectors\, as the Ice Cube\, Baikal-GVD and KM3NeT.\n\nhttps://indico.particle.mephi.ru/event/27 5/contributions/3268/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3268/ END:VEVENT BEGIN:VEVENT SUMMARY:A non-minimal approximation for the see-saw mechanism type I DTSTART;VALUE=DATE-TIME:20221201T144500Z DTEND;VALUE=DATE-TIME:20221201T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3264@cern.ch DESCRIPTION:Speakers: Elena Fedotova (SINP MSU)\nA non-minimal expansion o f the Majorana fermions mass matrix in the framework of the type I see-saw mechanism is considered. The original parametrizations of mixing and mass matrices of the light and the heavy neutrinos are obtained. It is shown t hat (i) the effective mass matrix is independent on an approximation\, (ii ) new contributions in the expansion are of the same order as those used i n describing bariogenesis in the early Universe. The model regimes in whic h higher order corrections may be important are discussed.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3264/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3264/ END:VEVENT BEGIN:VEVENT SUMMARY:Single top quark production at ultra-high energies DTSTART;VALUE=DATE-TIME:20221201T094500Z DTEND;VALUE=DATE-TIME:20221201T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3265@cern.ch DESCRIPTION:Speakers: Vitalii Okorokov (National Research Nuclear Universi ty "MEPhI")\nThe processes with single top quark production provide a prot otype search for the types of final state that are expected in many new ph ysics scenarios. Some distinctive features are considered for particle pro duction in the top sector in ultra-high energy domain which can be covered partly in the collisions of cosmic ray particles with atmosphere. The sin gle top quark production through electroweak interaction is studied within the Standard model and the Effective field theory approach used for calcu lations of total partonic cross sections. These quantitative results can b e important for both the future collider experiments at center-of-mass ene rgy frontier and the improvement of the phenome-nological models for devel opment of the cosmic ray cascades in ultra-high energy domain. Thus the st udy allows the better understanding of heavy particle production and empha sizes the exciting interrelation between the high-energy physics on accele rators and ultra-high energy cosmic ray measurements.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3265/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3265/ END:VEVENT BEGIN:VEVENT SUMMARY:Relativistic theory of paired heavy meson and baryon production DTSTART;VALUE=DATE-TIME:20221201T093000Z DTEND;VALUE=DATE-TIME:20221201T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3250@cern.ch DESCRIPTION:Speakers: Alexei Martynenko (Samara U.)\nWe study the processe s of the paired heavy meson and baryon production in electron-positron ann ihilation\, gamma-gamma interaction and decays of the Higgs boson. Using t he perturbative Standard Model and relativistic quark model we construct r elativistic amplitudes and cross sections. Relativistic corrections connec ted with the relative momenta of heavy quarks are calculated in the produc tion amplitudes and wave functions of the bound states. Numerical results for different production cross sections are presented.\n\nhttps://indico.p article.mephi.ru/event/275/contributions/3250/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3250/ END:VEVENT BEGIN:VEVENT SUMMARY:Fully-heavy tetraquarks in the relativistic diquark-antidiquark pi cture DTSTART;VALUE=DATE-TIME:20221201T091500Z DTEND;VALUE=DATE-TIME:20221201T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3253@cern.ch DESCRIPTION:Speakers: Elena Savchenko (Federal Research Center "Computer S cience and Control"\, Russian Academy of Sciences\; Faculty of Physics\, M .V. Lomonosov Moscow State University)\nMasses of the ground and excited s tates of the fully-heavy tetraquarks\, composed of charm $c$ and bottom $b $ quarks and antiquarks\, are calculated in the diquark-antidiquark pictur e in the framework of the relativistic quark model based on the quasipoten tial approach and quantum chromodynamics. The quasipotentials of the quark -quark and diquark-antidiquark interactions are constructed similarly to t he previous consideration of mesons and baryons. Relativistic effects are consistently taken into account. A tetraquark is considered as a bound sta te of a diquark and an antidiquark. It is assumed that the diquark and ant idiquark interact in the tetraquark as a whole\, and the internal structur e of the diquarks is taken into account. Most of the investigated states o f tetraquarks are found above the thresholds of decays to two heavy quarko nia. This is a result of the consideration of the diquark not to be a poin tlike object. Therefore\, such tetraquarks can be observed only as broad r esonances decaying dominantly to quarkonia. The narrow state X(6900) recen tly discovered in the di-$J/\\psi$ production spectrum by the LHCb\, CMS a nd ATLAS Collaborations corresponds to an excited state of the fully-charm ed tetraquark. Other recently discovered exotic charmed resonances X(6200 )\, X(6400)\, X(6600)\, X(7200)\, X(7300) can also be interpreted as the d ifferent excitations of the fully-charmed tetraquark.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3253/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3253/ END:VEVENT BEGIN:VEVENT SUMMARY:The contribution of psi(3770) charmonium in baryon-antibaryon prod uction in electron-positron annihilation DTSTART;VALUE=DATE-TIME:20221201T090000Z DTEND;VALUE=DATE-TIME:20221201T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3251@cern.ch DESCRIPTION:Speakers: Yury Bystritskiy (JINR)\nThe total cross section of the process $e^+e^- \\to \\Lambda\\bar{\\Lambda}$ is calculated within the energy range close to the mass of $\\psi(3770)$ charmonium state. Two dif ferent contributions were considered: the $D$-meson loop and the three glu on charmonium annihilation one. Both of them contribute noticeably and\nin sum fairly reproduce the data. Large relative phase for these contributio ns are generated with respect to the pure electromagnetic mechanism. As a by product the fit for the electromagnetic form factor of $\\Lambda$-hyper on is obtained for large\nmomentum transferred region.\n\nhttps://indico.p article.mephi.ru/event/275/contributions/3251/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3251/ END:VEVENT BEGIN:VEVENT SUMMARY:Ratios of Hidden-Charm Pentaquark Decay Widths in Compact Diquark Model DTSTART;VALUE=DATE-TIME:20221201T084500Z DTEND;VALUE=DATE-TIME:20221201T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3252@cern.ch DESCRIPTION:Speakers: Alexander Parkhomenko (P.G. Demidov Yaroslavl State University)\nA number of resonances compatible with a hypothesis of hidden -charm pentaquark was observed by the LHCb Collaboration. We interpret the se narrow resonances as compact hidden-charm diquark-diquark-antiquark pen taquarks. Within this assumption\, an interplay between the charmonium and open-charm modes is considered. Ratios of such modes is estimates for non -strange and strange pentaquarks are obtained and discussed. \n\nThis work is supported by the Russian Science Foundation (Project № 22-22-00877\, https://rscf.ru/project/22-22-00877/).\n\nhttps://indico.particle.mephi.r u/event/275/contributions/3252/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3252/ END:VEVENT BEGIN:VEVENT SUMMARY:Pair production of heavy quarkonia in the color evaporation model DTSTART;VALUE=DATE-TIME:20221201T083000Z DTEND;VALUE=DATE-TIME:20221201T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3256@cern.ch DESCRIPTION:Speakers: Vladimir Saleev (Samara National Research University )\nWe study the prompt single and double J/ψ hadroproduction in the Impro ved Color\nEvaporation Model using the Parton Reggeization Approach. We ma ke calculations in a single manner to described the experimental data for prompt J/ψ transverse momentum spectra from the energy of $\\sqrt{s}$=19 GeV up to modern energy of the LHC\, $\\sqrt{s}$=13 TeV. The numerical cal culations are made using parton-level MC generator for kT−depended initi al-state partons\, KaTie. We use the modified KMR-type unintegrated parton distribution functions of Reggeized gluons and quarks with exact normaliz ation based on Kimber-Martin-Ryskin-Watt model. We suggest improvement of the ICEM for the pair-production of J/ψ. In case of double J/ψ productio n we investigate the relative contributions of the single-parton scatterin g and double-parton scattering mechanisms.\n\nhttps://indico.particle.meph i.ru/event/275/contributions/3256/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3256/ END:VEVENT BEGIN:VEVENT SUMMARY:Associated quarkonia production in a single boson e+e− annihilat ion DTSTART;VALUE=DATE-TIME:20221201T081500Z DTEND;VALUE=DATE-TIME:20221201T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3255@cern.ch DESCRIPTION:Speakers: Evgeny Leshchenko ()\nThe production cross sections of charmonia\, charmonium-bottomonium and bottomonia pairs in a single bos on electron-positron annihilation have been studied in a wide range of ene rgies\, which will be achieved at future e+e− colliders such as ILC and FCC. Color singlet contributions to the vector and pseudoscalar state prod uction are taken into account. NLO QCD and LO EW contributions\, as well a s their interferences are considered. Both intermediate bosons\, γ and Z\ , are included. All calculations are performed in terms of perturbative te chnique and NRQCD-factorization.\n\nhttps://indico.particle.mephi.ru/event /275/contributions/3255/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3255/ END:VEVENT BEGIN:VEVENT SUMMARY:Constraints on New Physics in b -> sνν decays DTSTART;VALUE=DATE-TIME:20221201T080000Z DTEND;VALUE=DATE-TIME:20221201T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3254@cern.ch DESCRIPTION:Speakers: Alfiia Mukhaeva ()\nSemileptonic flavor changing neu tral current transitions of $B$-mesons with a pair of neutrinos in the fin al state are very accurately determined in the standard model (SM) and\, t hus\, provide a sensitive probe for physics beyond the SM. Until recently\ , the poor tagging efficiency for the $B\\to K^{(*)}\\nu\\bar{\\nu}$ modes made them less advantageous as a probe of new physics (NP) compared to th e charged lepton counterparts. The most recent Belle II result on $B^+\\to K^+\\nu\\bar{\\nu}$ indicates a possible enhancement in the branching fra ction of $B^+\\to K^+\\nu\\bar{\\nu}$. Therefore we explore the possibilit ies of an enhancement in a set of observables for $B\\to K^{(*)}\\nu\\bar{ \\nu}$. We considered the weak effective theory extended by vector effecti ve operators both with light left- and right-handed neutrinos. The latter can appear in various SM extensions\, e.g.\, in models with additional $Z' $ boson.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3254/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3254/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent Heavy Flavour results from ATLAS and CMS DTSTART;VALUE=DATE-TIME:20221129T110000Z DTEND;VALUE=DATE-TIME:20221129T113500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3097@cern.ch DESCRIPTION:Speakers: Leonid Gladilin (M.V.Lomonosov Moscow State Universi ty\, Skobeltsyn Institute of Nuclear Physics (SINP MSU))\nReview of recent heavy flavour results obtained by the ATLAS and CMS collaborations\nwill be presented. The results will be compared with those from other experimen ts\nand with theoretical predictions. Prospects for further studies\nwill also be outlined\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3097/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3097/ END:VEVENT BEGIN:VEVENT SUMMARY:Standard Model measurements by ATLAS and CMS DTSTART;VALUE=DATE-TIME:20221129T102500Z DTEND;VALUE=DATE-TIME:20221129T110000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3082@cern.ch DESCRIPTION:Speakers: Yuri Kulchitsky (JINR)\nSummary of recent Standard M odel measurements performed by ATLAS and CMS experiments at LHC (CERN).\n\ nhttps://indico.particle.mephi.ru/event/275/contributions/3082/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3082/ END:VEVENT BEGIN:VEVENT SUMMARY:A Model of Neutrino Masses DTSTART;VALUE=DATE-TIME:20221201T143000Z DTEND;VALUE=DATE-TIME:20221201T144500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3142@cern.ch DESCRIPTION:Speakers: Olakanmi Akinto ()\nUsing the fact that neutrinos on ly participate in weak and gravitational interactions\, we explore the pos sibility of having their masses emerged at the intersection between extend ed electroweak theory and theory of gravity. We describe how these two see mingly incompatible theories could be embedded in a lepton-number violatin g 5-dimensional Lagrangian L5. A peculiar feature of this approach is its ability to generate effective Majorana neutrino masses via the spontaneous symmetry breaking (SSB) of Grand Unified Theory (GUT)\, $GGUTMX−\\right arrow−G(321)\\upsilon EW−\\rightarrow−G(1)$ and $4\\times4$ symmetri c matrix of gravitational couplings. Within the purview of this theoretica l framework\, we obtain values for the effective Majorana mass Mmasseff=3. 7126 meV\, and the Majorana neutrino masses $m_1=0.6672$ meV\, $m_2=14.449 8$ meV\, $m_3=43.3494$ meV\, $m_4=0$ meV and $\\Sigma m=0.0585$ eV. Our re sults are in good agreement with both experimental and cosmological data.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3142/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3142/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent Higgs results by ATLAS and CMS DTSTART;VALUE=DATE-TIME:20221129T095000Z DTEND;VALUE=DATE-TIME:20221129T102500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3081@cern.ch DESCRIPTION:Speakers: Ilya (Ilia) Tsukerman ()\nThe last undiscovered part icle of the Standard Model\, the Higgs boson\, was observed in 2012 by the ATLAS and CMS Collaborations at the Large Hadron Collider at CERN. Since that time the cross sections of main five production mechanisms at $\\sqrt {s}$ = 7\, 8 and 13 TeV pp collisions were measured as well as branching r atios of five decay channels\, a mass and a width. It was also establishe d that a spin and a parity of the Higgs boson are 0+. In addition\, differ ential cross sections on many kinematic variables were measured. No deviat ions from the Standard Model predictions were observed. The precision of t he measurements at the LHC is permanently improving with analyzing new dat a. This talk summarizes experimental situation with the Higgs boson after ten years of its discovery mostly based on full $\\sqrt{s}$ = 7\, 8 and 13 TeV datasets accumulated by the ATLAS and CMS detectors during Run1 and R un2 of the LHC.\n\nhttps://indico.particle.mephi.ru/event/275/contribution s/3081/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3081/ END:VEVENT BEGIN:VEVENT SUMMARY:From strangeness to charm and beauty with Inner Tracking System of ALICE at LHC DTSTART;VALUE=DATE-TIME:20221202T150000Z DTEND;VALUE=DATE-TIME:20221202T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3266@cern.ch DESCRIPTION:Speakers: Grigory Feofilov (Saint-Petersburg State University) \nFrom strangeness to charm and beauty with Inner Tracking System of ALICE at LHC\n\nGrigory Feofilov\, Saint-Petersburg State University\, RF\,\non behalf of the ALICE Collaboration\n \nIn the first part of this talk\, we present the major motivations for the current new ALICE physics progra mme of measurements of low-momentum charm and beauty hadrons and low-mass dielectrons in heavy-ion collisions at the LHC. These studies of rare proc esses will bring unique information on the properties of the quark-gluon p lasma (QGP) and\, in particular\, on the process of QGP thermalization and its quantitative characterisation\, including the heavy-flavour transport coefficients and space–time evolution of the QGP.\n\nWe will show also some several recent experimental observations by the ALICE collaboration i n studies of medium induced effects on strange and charm particles yields\ , shape of jets\, and of residual strong interaction between strange\, cha rm and light hadrons. With these interesting results\, new long-term physi cs ambitious goals appeared. To reach them\, it was required to solve the most challenging task of improving the ALICE performance for heavy-flavour detection. It was at the core of the ALICE upgrade programme in the last decade. The following goals had to be met: (i) coverage in transverse mome ntum to be as complete as possible\, in particular\, down to very low mome nta\, (ii) very accurate identification of secondary vertices from decayin g charm or beauty (D\, J/ψ\, Λc\, Λb). The ALICE Collaboration designed the entirely new Inner Tracking System (ITS2) with the increased capabili ties in readout speed\, impact parameter resolution and the reduced materi al budget. The ITS2 was installed in spring 2021\, commissioned with proto n beams in October 2021 and June 2022 and successfully operating in LHC Ru n 3 at high collision rates since July 2022.\n\nToday\, the high granulari ty ITS2 (12\,5 Gpixels) is the largest pixel detector ever built. It has 1 0 m2 of thin of 50 and 100 um thick ALPIDE chips— silicon monolithic act ive pixel sensors (MAPS) based on CMOS technology. We will present the sta tus of ALICE ITS2 in Run 3. We will also discuss briefly the future prospe cts for development of the next generation of vertex trackers — the ITS3 . The most central three cylindrical layers of silicon-only sensors with a further significant reduction in the material budget (0.3 → 0.05% X0/la yer)\, are supposed to be installed during the Long Shutdown 3 (in 2026-20 28).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3266/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3266/ END:VEVENT BEGIN:VEVENT SUMMARY:Cornwall-Jackiw-Tomboulis effective action in (2+1)-dimensional mo dels DTSTART;VALUE=DATE-TIME:20221130T170000Z DTEND;VALUE=DATE-TIME:20221130T171500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3243@cern.ch DESCRIPTION:Speakers: Roman Zhokhov (IHEP Protvino\, IZMIRAN Troitsk)\nUsi ng a nonperturbative approach based on the Cornwall-Jackiw-Tomboulis effec tive action Γ(S) for composite operators (S is the full fermion propagato r)\, the phase structure of the (2 + 1)-dimensional Gross-Neveu (GN) and T hirring models is investigated. We have calculated Γ(S) and its stationar y (or Dyson-Schwinger) equation for GN model and have shown that it has th ree different solutions for fermion propagator S corresponding to possible dynamical appearance of three different mass terms in the model. One is a Hermitian\, but two others are non-Hermitian and PT even or odd. It means that two phases with spontaneous non-Hermiticity can be emerged in the sy stem. Moreover\, mass spectrum of quasiparticles is real in these non-Herm itian and PT even/odd phases.\nAlso the (2+1)-dimensional generalized Thir ring model has been investigated by the Hartree-Fock method. The Lagrangia n of this model is constructed from two different four-fermion structures\ , one of them takes into account the vector×vector channel with coupling constant Gv\, the other - the scalar×scalar channel with coupling Gs. At some relation between bare couplings Gs and Gv dynamical generation of the Dirac and Haldane fermion masses is possible. As a result\, phase portrai t of the model consists of two nontrivial phases. In the first one the chi ral symmetry is spontaneously broken due to dynamical appearing of the Dir ac mass term\, while in the second phase a spontaneous breaking of the spa tial parity P is induced by Haldane mass term. It is shown that in the par ticular case of pure Thirring model\, i.e. at Gs=0\, the ground state of t he system is indeed a mixture of these phases. Moreover\, it was found tha t dynamical generation of fermion masses is possible for any finite number of Fermi-fields.\nThese methods could be interesting in studies of phase structure of different theories including QCD.\n\nBased on\nPhys.Rev.D 106 (2022) 8\, 085002\nPhys.Rev.D 105 (2022) 2\, 025014 \nInt.J.Mod.Phys.A 36 (2021) 31n32\, 2150231\nComposite operator approach to\n\nhttps://indico. particle.mephi.ru/event/275/contributions/3243/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3243/ END:VEVENT BEGIN:VEVENT SUMMARY:Coherent radiation of photons by particle wave packets DTSTART;VALUE=DATE-TIME:20221130T164500Z DTEND;VALUE=DATE-TIME:20221130T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3248@cern.ch DESCRIPTION:Speakers: Timofey Solovyev (National Research Tomsk State Univ ersity)\nThe radiation of photons by electrons is investigated in the fram ework of quantum electrodynamics up to the second order in the coupling co nstant e. The N-particle\, coherent\, and thermal initial states are consi dered and the forms of the electron wave packets are taken into account. T he explicit expressions for the intensity of radiation and the inclusive p robability to record a photon are obtained. It is found that there are thr ee processes in this order of perturbation theory where the electron wave packet radiates coherently and can be regarded as a charged fluid [1\,2\,3 ] even on integrating over the final states of the electron\, i.e.\, in co nsidering the inclusive probabilities and intensity of radiation. These pr ocesses are stimulated radiation by an electron\, coherent radiation from a beam of particles\, and reradiation of a photon in the Compton process [ 4]. We obtain the explicit expressions for the intensity of radiation and the inclusive probability to record a photon for these processes. As parti cular cases\, we consider: stimulated transition radiation produced by an electron wave packet traversing a mirror [3] and backlighted by a laser wa ve\, reradiation of photons in a coherent state by an electron wave packet . In the latter case\, we deduce that the wave packet of a single electron can be endowed with the susceptibility tensor and this tensor has the sam e form as for an electron plasma in the small recoil limit.\n\nReferences\ n\n 1. I.P. Ivanov\, D.V. Karlovets\, Detecting transition radiation from a magnetic moment. Phys. Rev. Lett. 110\, 264801 (2013)\n 2. I.P. Ivanov\, D.V. Karlovets\, Polarization radiation of vortex electrons with large or bital angular momentum. Phys. Rev. A 88\, 043840 (2013)\n 3. Y. Pan\, A. G over\, Spontaneous and stimulated emissions of a preformed quantum free-el ectron wave function. Phys. Rev. A 99\, 052107 (2019)\n 4. P.O. Kazinski\, G.Yu. Lazarenko\, Transition radiation from a Dirac-particle wave packet traversing a mirror. Phys. Rev. A 103\, 012216 (2021)\n 5. Y. Pan\, A. Gov er\, Beyond Fermi’s golden rule in free-electron quantum electrodynamics : acceleration/radiation correspondence. New J. Phys. 23\, 063070 (2021)\n \nhttps://indico.particle.mephi.ru/event/275/contributions/3248/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3248/ END:VEVENT BEGIN:VEVENT SUMMARY:Nonperturbative corrections and checking of the hypothesis of vacu um dominance DTSTART;VALUE=DATE-TIME:20221130T163000Z DTEND;VALUE=DATE-TIME:20221130T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3241@cern.ch DESCRIPTION:Speakers: Marina Kozhevnikova (JINR)\nIn this work we explore the nonpertorbative corrections\, especcialy operator dimension which is c onnected to existing of short strings\, basing on our method: processing o f experimental data on $e^+e^-$-annihilation into even number of pions (Ba Bar\, CMD-2\, OLYA) by constructing the Adler function in two ways (throug h dispersion representation and through the OPE series)\, applying the Bor el transform\, compiling the sum rule\, and extracting of nonperturbative corrections.\n​\nAnother task\, we check the range of values which coeff icient dimension 6\, $С_6$\, can take\, considering the hypothesis of vac uum dominance\, and a possibility of other intermediate states\, contribut ing to four-quark condensate included in $С_6$.\n​\nHow other nonpertur bative corrections ($C_2$ and $C_4$ or gluon condensate)​ change when th e additional contribution of intermediate states is taken into account?\nI t is shown that values of quark condensate that are not more than 1.2 time s higher than the average obtained value\, which corresponds to the availa ble data\, but not 2 or 1.5 times\, are acceptable.\nIn this case\, $C_4$ takes values close to the previously known​ ones\, while $C_2$ is compat ible to zero or negative.\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3241/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3241/ END:VEVENT BEGIN:VEVENT SUMMARY:Proof to count bound state nodes in supersymmetric quantum mechani cs DTSTART;VALUE=DATE-TIME:20221130T161500Z DTEND;VALUE=DATE-TIME:20221130T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3244@cern.ch DESCRIPTION:Speakers: Asya Aynbund (MIPT)\nA normalizable static supersymm etric bound ground state annihilated by the super-generators has got zero number of internal nodes in the framework of one-dimensional supersymmetri c quantum mechanics. The super-generator transformations between excited s uper-partner bound states as combined with the standard technique of wrons kian provides an elegant and self sufficient way to derive the equality of internal nodes amount to the number of consequent excitation.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3244/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3244/ END:VEVENT BEGIN:VEVENT SUMMARY:Landau-Khalatnikov-Fradkin transformation and a mystery of even ze ta-values DTSTART;VALUE=DATE-TIME:20221130T160000Z DTEND;VALUE=DATE-TIME:20221130T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3245@cern.ch DESCRIPTION:Speakers: Anatoly Kotikov ()\nThe Landau-Khalatnikov-Fradkin ( LKF) transformation is a powerful and elegant transformation allowing to s tudy the gauge dependence of the propagator of charged particles interacti ng with gauge fields. With the help of this transformation\, we derive a n on-perturbative identity between massless propagators in two different gau ges. From this identity\, we find that the corresponding perturbative seri es can be exactly expressed in terms of a hatted transcendental basis that eliminates all even Euler zeta-functions. This explains the mystery of ev en zeta-values observed in multi-loop calculations of Euclidean massless c orrelators for almost three decades now. Our construction further allows u s to derive an exact formula relating hatted and standard zeta-functions t o all orders of perturbation theory.\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3245/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3245/ END:VEVENT BEGIN:VEVENT SUMMARY:An Effective Field Theory for Large Oscillons DTSTART;VALUE=DATE-TIME:20221130T154500Z DTEND;VALUE=DATE-TIME:20221130T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3239@cern.ch DESCRIPTION:Speakers: Vasily Maslov (INR RAS & Lomonosov MSU)\nWe consider oscillons - localized\, quasiperiodic\, and extremely long-living classic al solutions in models with real scalar fields. We develop their effective description in the limit of large size at finite field strength. Namely\, we note that nonlinear long-range field configurations can be described b y an effective complex field $\\psi(t\,\\mathbf{x})$ which is related to t he original fields by a canonical transformation. The action for $\\psi$ h as the form of a systematic gradient expansion. At every order of the expa nsion\, such an effective theory has a global U(1) symmetry and hence a fa mily of stationary nontopological solitons - oscillons. The decay of the l atter objects is a nonperturbative process from the viewpoint of the effec tive theory. Our approach gives an intuitive understanding of oscillons in full nonlinearity and explains their longevity. Importantly\, it also pro vides reliable selection criteria for models with long-lived oscillons. Th is technique is more precise in the nonrelativistic limit\, in the notable cases of nonlinear\, extremely long-lived\, and large objects\, and also in lower spatial dimensions. We test the effective theory by performing ex plicit numerical simulations of a $(d+1)$-dimensional scalar field with a plateau potential.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3239/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3239/ END:VEVENT BEGIN:VEVENT SUMMARY:Catalytic effect on pion decay caused by monopole and instanton cr eations in QCD DTSTART;VALUE=DATE-TIME:20221130T153000Z DTEND;VALUE=DATE-TIME:20221130T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3240@cern.ch DESCRIPTION:Speakers: Masayasu Hasegawa (JINR\, BLTP)\nMonopole condensati on causes color confinement and instantons induce chiral symmetry breaking . Color confinement and chiral symmetry breaking are closely tied to one a nother through monopoles and instantons in the QCD vacuum. However\, it is difficult to reveal the quantitative relations and effects among monopole s\, instantons\, color confinement\, and chiral symmetry breaking by pertu rbative calculations because of the strong interaction in the low-energy r egion of the QCD. Therefore\, we perform simulations of lattice gauge theo ry and investigate the impacts of the monopole and instanton creations on color confinement and chiral symmetry breaking.\n\nIn our research\, we ap ply the monopole creation operator to the vacuum and add the monopoles and anti-monopoles to the SU(3) gauge field configurations of the quenched ap proximation. We vary the magnetic charges of the monopole creation operato r to increase the number of monopoles and anti-monopoles.\n\nWe then calcu late the eigenvalues and eigenvectors of the overlap Dirac operator that p reserves the exact chiral symmetry in lattice gauge theory\, using the nor mal configurations and the configurations to which the monopoles and anti- monopoles are added. We count the number of instantons and anti-instantons that are created by the additional monopoles and anti-monopoles. Finally\ , we investigate the impacts induced by monopole and instanton creations o n observables that experiments can detect.\n\nWe have found the catalytic effect in which the lifetime of the charged pion becomes shorter than the experimental result by increasing the number density of the instantons and anti-instantons [1]. To my knowledge\, no one has mentioned this effect b efore. We have demonstrated that the finite lattice volume and the discret ization do not affect the outcomes that we obtained [2].\n\nIn my presenta tion\, I would like to talk about the catalytic effect.\n\n**References**\ n\n[1] M. Hasegawa\, *Monopole and instanton effects in QCD\,* JHEP 09 (20 20) 113\, [arXiv: 1807.04808].\n\n[2] M. Hasegawa\, *Color confinement\, c hiral symmetry breaking\, and catalytic effect induced by monopole and ins tanton creations*\, accepted by the EPJC on the 7th of October 2022\, [arX iv: 2203.11357].\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3240/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3240/ END:VEVENT BEGIN:VEVENT SUMMARY:Little String Theory\, Holography and the Non-Abelian Vortex Strin g in $\\mathcal{N}=2$ supersymmetric QCD DTSTART;VALUE=DATE-TIME:20221130T151500Z DTEND;VALUE=DATE-TIME:20221130T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3247@cern.ch DESCRIPTION:Speakers: Evgenii Ievlev (Petersburg Nuclear Physics Institute )\nIt has been shown that non-Abelian vortex string supported in four dime nsional (4D) ${\\mathcal N}=2$ supersymmetric QCD (SQCD) with the U(2) gau ge group and $N_f = 4$ quark flavors becomes a critical superstring. This string propagates in the ten dimensional space formed by a product of the flat 4D space and an internal space given by a Calabi-Yau non-compact thre efold\, namely\, the conifold. The spectrum of closed string states of th e associated string theory was obtained using the equivalence between the critical string on the conifold and the non-critical string on the semi-i nfinite cigar described by SL($2\, \\mathbb{R}$)/U(1) Wess-Zumino-Novikov- Witten model. This spectrum was identified with the spectrum of hadrons i n 4D ${\\mathcal N}=2$ SQCD. \nIn order to describe effective interaction s of these 4D hadrons in this paper we study correlation functions of norm alizable vertex operators localized near the tip of the SL($2\, \\mathbb{R }$)/U(1) cigar. We also compare our solitonic string approach to the gauge -string duality to the AdS/CFT-type holography for little string theorie s (LSTs). The latter relates off mass-shell correlation functions on the field theory side to correlation functions of non-normalizable vertex op erators on the cigar. We show that in most channels holographic approach w orks in our theory because normalizable and non-normalizable vertex operat ors with the same conformal dimension are related due to the reflection fr om the tip of the cigar. However\, we find that holography does not work f or lightest hadrons with given baryonic charge.\n\nhttps://indico.particl e.mephi.ru/event/275/contributions/3247/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3247/ END:VEVENT BEGIN:VEVENT SUMMARY:Soliton configurations and ground states in maximal gauged supergr avity DTSTART;VALUE=DATE-TIME:20221130T150000Z DTEND;VALUE=DATE-TIME:20221130T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3242@cern.ch DESCRIPTION:Speakers: Antonio Gallerati (Polytechnic of Turin)\nWe present new soliton solutions in a class of four-dimensional supergravity theorie s. For special values of the parameters\, the solutions can be embedded in the gauged maximal N=8 theory and uplifted in the higher-dimensional D=11 theory. We also find BPS soliton configurations\, preserving a certain fr action of supersymmetry.\n\nSolitons play a special role in classical phys ics as well as in quantum and string theory\, determining a richer structu re of the full non-perturbative regime. This different class of exact solu tions can be obtained from a double Wick rotation of a former black hole c onfiguration\, the new solutions characterizing a regular spacetime config uration devoid of horizons.\nIn non-supersymmetric AdS gravity\, solitons play a fundamental role as they can be treated as ground states for suitab le field theories. The negative mass of the AdS soliton has a natural inte rpretation as the Casimir energy of a gauge theory living on the conformal boundary. In a non-susy version of the AdS/CFT conjecture\, this would in dicate that the soliton is the lowest energy solution with the chosen boun dary conditions\, leading to a new kind of positive energy conjecture.\n\n Finally\, BPS gravitational solitons preserving a certain fraction of supe rsymmetry can be found\, providing a privileged framework in studying the system evolution: the resulting dynamical equations are in fact typically first-order\, as compared to the standard second order equations of motion .\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3242/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3242/ END:VEVENT BEGIN:VEVENT SUMMARY:Radiation of a twisted neutron in the presence of a dispersion med ium DTSTART;VALUE=DATE-TIME:20221130T094500Z DTEND;VALUE=DATE-TIME:20221130T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3237@cern.ch DESCRIPTION:Speakers: George Lazarenko (Physics Faculty\, Tomsk State Univ ersity\, Tomsk\, Russia)\nFree particles carrying orbital angular momentum (OAM) are called twisted particles. The wave function of such particles h as a characteristic phase $e^{i l\\varphi}$\, where $l$ is the OAM project ion onto the axis along the particle motion and $\\varphi$ is the azimuth angle of a point of a wave packet in the cylindrical system of coordinates . The twisted neutrons have been obtained relatively recently\, in 2015 [1 ]\, by using a phasophobic plate. The methods for obtaining and detecting twisted neutrons are being actively developed [2\,3]. The reason for this is the potential applications of such states. They are able to excite forb idden transitions in nuclei that can be employed in nuclear physics. Anoth er promising application of such neutrons is the neutron diffraction. Due to the OAM the twisted neutrons have a higher resolution and sensitivity t o magnetic properties of matter. The processes involving neutrons with non zero OAM can be used to study the internal structure of the neutron itself .\n\nThe available papers on twisted neutron scattering [4\,5] and radiati on [6\,7] show that the features arising in these processes cannot be redu ced to quantum effects previously known for plane neutrons. For example\, new corrections in radiation proportional to $\\frac{(|l|+1)\\sigma_{\\b ot}^{2}}{m^{2}}$\, where $\\sigma_{\\bot}$ is transverse size of wave pack et\, are typical for the processes with twisted particles [6]. As were not ed in [6\,7]\, these and other corrections can be larger by an order of ma gnitude than the classical contribution.\n\nWe have studied the Cherenkov and transition radiations produced when a neutron twisted wave packet trav erses a medium translationaryt invariant in the plane perpendicular to the incidence direction. We showed that the quantum effects associated with t he neutron OAM and the cross section of the neutron wave packet have the s ame structure as found in [6]. We have derived the estimates for the numbe r of emitted photons and the energy loss due to radiation. We discuss the possibility of observing the generated radiation and how to use it to dete rmine the shape of the wave packet. The result obtained can be generalized to the case of $N$-particle wave packets using the results of [6\,7].\n\n **Acknowledgments**\nThis study was supported by the Tomsk State Universit y Development Program (Priority-2030).\n\n**References**\n\n[1] C.W. Clark *et al.*\, Controlling neutron orbital angular momentum\, Nature **525**\ , 504 (2015).\n\n[2] D. Sarenac *et al.*\, Generation and detection of spi n-orbit coupled neutron beams\, Proc. Nat. Acad. Sci. USA **116**\, 20328 (2019).\n\n[3] M.G. Huber\, C.W. Clark *et al.*\, Experimental Realizatio n of Neutron Helical Waves\, https://arxiv.org/abs/2205.06263 (2022).\n\n [4] J.A. Sherwin\, Scattering of slow twisted neutrons by ortho- and parah ydrogen\,\nPhys. Let. A **437**\, 128102 (2022).\n\n[5] A.V. Afanasev\, D .V. Karlovets and V.G. Serbo\, Schwinger scattering of twisted neutrons by nuclei\, Phys. Rev. C **100**\, 051601(R) (2019).\n\n[6] P.O. Kazinski a nd G.Yu. Lazarenko\, Transition radiation from a Dirac-particle wave packe t traversing a mirror\, Phys. Rev. A **103**\, 012216 (2021).\n\n[7] P.O. Kazinski and T.V. Solovyev\, Coherent radiation of photons by particle wa ve packets\, Eur. Phys. J. C **82**\, 790 (2022).\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3237/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3237/ END:VEVENT BEGIN:VEVENT SUMMARY:The lowest order radiative corrections to the lepton current in po larized SIDIS DTSTART;VALUE=DATE-TIME:20221130T093000Z DTEND;VALUE=DATE-TIME:20221130T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3233@cern.ch DESCRIPTION:Speakers: Alexander Ilyichev (BSU\, INP BSU)\nThe lowest order radiative corrections to the lepton current in polarized SIDIS are calcul ated exactly. The contribution of exclusive radiative tail for polarized i nitial particles are estimated for the first time. Numerical analysis is p erformed in the frame of the modern JLab kinematic conditions within Wandz ura-Wilczek model for SiDIS structure functions and the exclusive radiativ e tail is estimated using MAID 2007.\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3233/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3233/ END:VEVENT BEGIN:VEVENT SUMMARY:Electroweak corrections to dilepton production via photon fusion a t LHC DTSTART;VALUE=DATE-TIME:20221130T091500Z DTEND;VALUE=DATE-TIME:20221130T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3235@cern.ch DESCRIPTION:Speakers: Vladimir Zykunov (JINR)\nOne-loop electroweak radiat ive corrections to dilepton production in hadron collisions via photon fus ion for Large Hadron Collider (LHC) experimental program are estimated\, t he most attention is paid to hard bremstrahlung. Discussed reaction follow s the Drell-Yan process\, its studying is the actual task of LHC experimen tal program. Detailed numerical analysis of electroweak radiative effects to observable quantities (cross sections and forward-backward asymmetry) i n wide kinematical region including the CMS LHC experiment in Run3/HL regi me corresponding ultra-high energies and dilepton invariant masses is perf ormed.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3235/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3235/ END:VEVENT BEGIN:VEVENT SUMMARY:Loop corrections to cosmological particle creation DTSTART;VALUE=DATE-TIME:20221130T090000Z DTEND;VALUE=DATE-TIME:20221130T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3238@cern.ch DESCRIPTION:Speakers: Prokopii Anempodistov (MIPT\, Kurchatov Institute)\n We consider dynamics of the massive minimally coupled scalar field theory in an expanding Friedmann-Lemaitre-Robertson-Walker universe. We consider the standard toy model of the conformally flat space-time where the confor mal factor becomes constant at the distant past and the distant future. Em ploying Schwinger-Keldysh diagrammatic technique\, we compute infrared loo p corrections to the occupation number and anomalous quantum average of th e scalar field and show that these corrections are growing with time. Usin g these observations\, we demonstrate that the regularized stress-energy t ensor at the distant future acquires substantial quantum corrections which exceed the long known tree-level contributions to the particle flux.\n\nh ttps://indico.particle.mephi.ru/event/275/contributions/3238/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3238/ END:VEVENT BEGIN:VEVENT SUMMARY:Photon Polarization Operator in External Electromagnetic Field wit h Account of Virtual-Fermion AMM DTSTART;VALUE=DATE-TIME:20221130T084500Z DTEND;VALUE=DATE-TIME:20221130T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3249@cern.ch DESCRIPTION:Speakers: Alexandra Dobrynina ()\nNon-diagonal two-point vecto r-tensor and tensor-tensor correlator of fermionic currents are calculated in a constant homogeneous magnetic field background. The crossed-field li mit of these correlators is presented. The tensor current is a fermionic p art of the Pauli Lagrangian density describing the electromagnetic interac tion of fermions through their anomalous magnetic moment (AMM). Under assu mption that this interaction enters the effective QED Lagrangian\, the con tribution induced by AMM to the photon polarization operator is calculated and discussed.\n\nhttps://indico.particle.mephi.ru/event/275/contribution s/3249/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3249/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of the Third Harmonic of a Vacuum Response in a Subcritic al Laser Field DTSTART;VALUE=DATE-TIME:20221130T083000Z DTEND;VALUE=DATE-TIME:20221130T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3232@cern.ch DESCRIPTION:Speakers: Vadim Dmitriev (Saratov State University)\, Stanisla v Smolyansky (Saratov State University\, Tomsk State University)\nWe inves tigate nonlinear response of the physical vacuum by the example of the thi rd harmonic in radiation of the electron-positron-photon (EPP) plasma exci ting by a strong time dependent electric field at the focus spot of counte rpropagating laser pulses. The investigation was developed within the fram ework of the Bogoliubov-Born-Green-Kirkwood-Yvon kinetic theory [1\,2] des cribing nonperturbatively vacuum creation of the electron-positron (EP) qu asiparticle plasma (reviews [3-5]) and different channels its interaction with the photon subsystem in the single-photon approximation that are open ed in the presence of a strong semiclassical field [6]. The corresponding closed self-consistent system of kinetic equations for the EP and photon s ubsystems is intended for description of the single-photon annihilation (p air production) and emission (absorption) processes.\n\nSome preliminary r esults on this basis were obtained in the works [1\,2] in the infrared reg ion of the radiation in the annihilation channel (see also [7]). In the pr esent report we show the results of detailed study of the third harmonic o n the frequency of laser field in the spectrum of induced quantum radiatio n of the EPP plasma and compare it with the third harmonic in the radiatio n of the semi-classical field induced by inner plasma currents [8].\n\n[1] D. B. Blaschke\, V. V. Dmitriev\, G. Roepke\, and S. A. Smolyansky. Phys. Rev. D 84\, 085028 (2011).\n\n[2] S. A. Smolyansky\, A. D. Panferov\, S. O. Pirogov\, and A. M. Fedotov. arXiv:1901.02305.\n\n[3] A. Otto\, T. Nous ch\, D. Seipt\, B. Kaempfer\, D. Blaschke\, A. D. Panferov\, S. A. Smolyan sky and A. I. Titov. J. Plasma Phys. 82\, 655820301 (2016).\n\n[4] D. B. B laschke\, A. V. Prozorkevich\, G. Roepke\, S. M. Schmidt\, D. S. Shkirmano v\, and S. A. Smolyansky. Eur. Phys. J. D55\, 341 (2009).\n\n[5] I. A. Ale ksandrov\, V. V. Dmitriev\, D. G. Sevostyanov\, and S. A. Smolyansky. Eur. Phys. J. Special Topics 229. 3469 (2020).\n\n[6] S. A. Smolyansky\, A. M. Fedotov\, V. V. Dmitriev. Mod. Phys. Lett.A35\, 2040028 (2020).\n\n[7] A. Otto and B. Kaempfer. Phys\, Rev. D 95\, 125007 (2017).\n\n[8] I. A. Alek sandrov\, A. D. Panferov\, and S.A. Smolyansky. Phys. Rev. A 103\, 053107 (2021).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3232/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3232/ END:VEVENT BEGIN:VEVENT SUMMARY:On the fixation of the uncertainties to the running top-quark mas s in the electro-weak sector DTSTART;VALUE=DATE-TIME:20221130T081500Z DTEND;VALUE=DATE-TIME:20221130T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3234@cern.ch DESCRIPTION:Speakers: Andrei Kataev (INR RAS)\nA specific representation o f the known one-loop EW correction to the relation between the pole and ru nning $\\msbar$-scheme masses of the top-quark through particle masses of the Standard Model is given within the Fleischer-Jegerlehner tadpole schem e\, where the vacuum expectation value of the Higgs field is renormalized. The importance of taking into account both the EW and QCD effects in this relation in the considered case is emphasized. It is noted that the disca rd of the EW corrections leads to over 10GeV shift in the difference betwe en the pole and running t-quark masses. This magnitude exceeds essentially the modern uncertainties of the considered relation\, following from the treatment of the Tevatron and LHC data where both pole and running t-quark masses are defined in the widespread approach when only the QCD correctio ns are kept in mind between them. Three other theoretical schemes of defi ning vacuum expectation value of the Higgs field are considereds. It is s hown that in these schemes the 1-loop EW huge effects are essentially mini mized. The relation to the recent results of extraction of the top-quark running mass values from CMS and ATLAS data are discussed.\n\nhttps://ind ico.particle.mephi.ru/event/275/contributions/3234/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3234/ END:VEVENT BEGIN:VEVENT SUMMARY:NNLO QCD predictions of charge asymmetry distributions for inclusi ve W-boson hadroproduction DTSTART;VALUE=DATE-TIME:20221130T080000Z DTEND;VALUE=DATE-TIME:20221130T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3236@cern.ch DESCRIPTION:Speakers: Kadir Ocalan (Necmettin Erbakan University\, Konya\, Turkey)\nHigher-order QCD predictions of charge asymmetry distributions a re presented for inclusive W±+X→l±ν+X production in proton-proton (pp ) collisions at 8\, 13\, and 14 TeV center-of-mass energies. The W boson o r the decay lepton charge asymmetries constitute a direct probe of the rel ative u and d quark distributions in the proton as functions of the initia l-state parton momentum fractions. The predictions for the charge asymmetr y distributions are acquired at next-to-next-to-leading order (NNLO) accur acy in the perturbative QCD domain\, exploiting several parton distributio n function (PDF) models. The predicted lepton charge asymmetry distributio ns are justified with the 8 TeV measurements by the LHC experiments in bot h central and forward acceptance regions of the lepton pseudorapidities 0 ≤ηl≤2.4 and 2.0≤ηl≤4.25\, and are provided thoroughly for both t he regions at 13 and 14 TeV pp collisions energies. Additionally\, the imp act of various lepton transverse momentum plT thresholds on the lepton (or the W boson) charge asymmetry predictions at NNLO accuracy are presented in the fiducial region encompassing both central and forward detector acce ptances of the lepton pseudorapidity 0≤ηl≤4.5. The lepton and W boson charge asymmetry distributions are assessed to be in close correlation wi th the plT threshold\, where the distributions are particularly observed t o be more correlated at a higher-plT threshold. The W boson asymmetry dist ribution as a function of the W boson transverse momentum pWT is also pres ented with improved accuracy by matching the NNLO predictions to resummed logarithmic corrections. Overall\, the predicted results represent a subst antial contribution in the context of the high-precision phenomenological studies.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3236/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3236/ END:VEVENT BEGIN:VEVENT SUMMARY:Generative Models in Particle Physics DTSTART;VALUE=DATE-TIME:20221202T164500Z DTEND;VALUE=DATE-TIME:20221202T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3231@cern.ch DESCRIPTION:Speakers: Sergei Mokhnenko ()\, Fedor Ratnikov (NRU Higher Sch ool of Economics)\nAt present\, the primary computational problems in part icle physics experiments is the amount\nof computing resources to facilita te the slow low level simulation of particles passing through\nthe detecto r material.\nA promising way to work around this problem driven by the low speed of the full low level Geant4 simulation\nis to use a data-driven su rrogate generative models instead. Such models may be trained to directly simulate\na higher level detector responses.\nHowever\, evil is in details \, not every surrogate model is equally useful from the physics perspectiv e.\nIn this talk we present our experience for developing fast simulation models for different use cases\,\nin different conditions\, and with diffe rent requirements\, and demonstrate how strongly those details\ndo affect the final solution.\nFuture prospects of fast simulation approaches which are based on using neural networks are also discussed.\n\nhttps://indico.p article.mephi.ru/event/275/contributions/3231/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3231/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of the experimental program with ultracold neutrons and neutrino at the PIK reactor DTSTART;VALUE=DATE-TIME:20221202T093000Z DTEND;VALUE=DATE-TIME:20221202T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3151@cern.ch DESCRIPTION:Speakers: Alexey Fomin (NRC "Kurchatov institute" - PNPI)\nMon te Carlo simulation of the complex of research with ultracold neutrons at the PIK reactor (Gatchina\, Russia) is carried out. The complex is being b uilt on the basis of a high-intensity source of ultracold neutrons at the GEK-4 channel. A Monte Carlo model has been developed\, which includes a s ource\, a neutron guide system and experimental installations\, taking int o account their real location in the main hall of the reactor. With the he lp of calculations\, the sensitivities of measuring installations for the search for the electric dipole moment of the neutron and for the measureme nt of the neutron lifetime at the PIK reactor were obtained. \nMonte Carlo simulation of the new reactor antineutrino detector of the Neutrino-4 exp eriment at the PIK reactor is carried out. The scintillation-type detector is based on the inverse beta-decay reaction. As a result of the simulatio n\, the distributions of photomultiplier signals from the positron and the neutron are obtained. The efficiency of the detector depending on the sig nal recording thresholds is calculated. A simulation of results expected w ith employing of spectral independent method of data analysis is done taki ng into account geometric configuration of the reactor core and detector.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3151/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3151/ END:VEVENT BEGIN:VEVENT SUMMARY:Ultracold neutrons source at NRC KI - PNPI for the study of fundam ental interactions DTSTART;VALUE=DATE-TIME:20221202T091500Z DTEND;VALUE=DATE-TIME:20221202T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3153@cern.ch DESCRIPTION:Speakers: Vitaliy Lyamkin (NRC "Kurchatov Institute" - PNPI)\n A more recently launched UCN source development utilizes superfluid helium (He-II) as conversion medium of cold neutrons into ultracold one. Initial ly proposed and designed for PNPI’s old WWR-M reactor\, the project has been reshaped to equip the institute’s PIK reactor with a modern UCN sou rce of this type. The projected UCN density in the closed source chamber i s 2200 cm-3\, which\, as calculations of neutron transport show\, will pro vide 200 cm-3 in the chambers of a neutron EDM spectrometer connected to t he source by a UCN guide. In general\, a broad research program is planned . The UCN guide system has been designed to feed up to five experimental f acilities. At the start of its operation\, it is planned to equip the UCN source with experimental setups already available at PNPI: an nEDM spectro meter and two neutron lifetime experiments\, one with a gravitational and one with a magnetic trap.\nExperiments at PNPI with a full-scale UCN sourc e model have demonstrated that a heat load of 60 W can be removed from the He-II in the converter at a temperature of 1.37 K. This fact confirms the practical possibility to implement low-temperature converters under “in -pile” conditions with large heat inflows. At present\, the manufacture of the source is close to be completed and preparations are underway for i ts preliminary tests.\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3153/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3153/ END:VEVENT BEGIN:VEVENT SUMMARY:Artificial neural networks application in estimating the impact pa rameter in heavy ion collision using the microchannel plate detector data DTSTART;VALUE=DATE-TIME:20221202T151500Z DTEND;VALUE=DATE-TIME:20221202T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3140@cern.ch DESCRIPTION:Speakers: Kirill Galaktionov ()\nEvaluation of the impact para meter in a single event of relativistic heavy ion collision is crucial for correct and efficient data processing and analysis. In this work\, we stu died the possibility of estimating the impact parameter in heavy ion colli sions by using artificial neural networks applied to the charged particle data from the fast microchannel plate (MCP) detectors.\n\nTo carry out com putational event-by-event experiments\, we used simulated data from 200\,0 00 A+A collisions of gold nuclei $(A = 197\, Z = 79)$\, at $\\sqrt{s_{NN}} = 11 \\mbox{ GeV}$\, obtained by the QGSM MC event generator. Charged par ticles multiplicity\, their spatial distribution and time-of-flight data w ere used as event features to be analyzed by the artificial neural network algorithms. \n\nWe investigated two different configurations of microchan nel plate detectors layout:\n\n - consisting of three pairs of small MCP s egmented rings with 5 cm outer and 3 cm of the inner diameter positioned i nside the vacuum beam-pipe symmetrically at distances of 1 m\, 1.7 m and 2 .5 m from the center of installation\n - consisting of one pair of large a rea segmented MCP rings with the outer diameter of 50 cm and 6 cm of the i nner one positioned outside the vacuum beam-pipe symmetrically at a distan ce of 4 m from the center of installation \n\nThese two configurations of MCP detectors layout have different data sets requirements and computation al requirements. In both configurations the readout anodes of the MCP ring s have certain segmentation in azimuth and radius. (The fast microchannel plate detector of charged particles was previously proposed for experiment s at NICA in [1]). \n \nWe show that the developed artificial neural netw orks technique is capable\, for both configurations of MCP detectors layou t\, to provide sufficiently good and fast results on the impact parameter determination in a single heavy ion collision event. In our first exercise s\, the proposed algorithm was capable to successfully classify more than 90% of $\\mbox{Au}+\\mbox{Au}$ collision events with the impact parameter less than 5 fm\, and it can be valuable as the fast trigger. We discuss al so further developments and possible applications of this technique in the future experimental setups.\n\n\n\n[1] A. A. Baldin\, G. A. Feofilov\, P. Har'yuzov\, F.F.Valiev\, Fast beam–beam collisions monitor for experime nts at NICA\, NIMA\, 958\, 162154\, 2019\, Reported at the VCI2019\, DOI:1 0.1016/j.nima.2019.04.10\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3140/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3140/ END:VEVENT BEGIN:VEVENT SUMMARY:Astrophysics and beyond the Standard Model of particle physics in the NOvA experiment DTSTART;VALUE=DATE-TIME:20221202T153000Z DTEND;VALUE=DATE-TIME:20221202T155000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3218@cern.ch DESCRIPTION:Speakers: Oleg Samoylov (Joint Institute for Nuclear Research) \nNOvA is currently operating 2nd generation long-baseline neutrino oscill ation experiment\, based on NuMI complex at Fermilab (USA)\, having two la rge highly-segmented liquid scintillator detectors it has precise capabili ty to measure neutrino’s and many other particle physics aspects. During the last several years NOvA have got and published important results on n eutrino oscillation properties for both so-called active and sterile neutr inos\, as well as neutrino interaction cross-section with matter\, on astr ophysics topics and beyond known properties of the matter.\nNOvA goals inc lude Astrophysical and Beyond the Standard Model program\, what contains s earches for magnetic monopoles\, dark matter\, neutron-antineutron oscilla tion and any types of so-called exotics signals\, supernova neutrino detec tion\, multi-messenger astronomy\, and detailed characterisation of the co smic ray fluxes. Several analysis already show promising interim results a nd the physics potential of them continues to improve with exposure\, oper ating until late mid-twenties.\nNext generation experiments are planned an d built as multipurpose projects\, often involving many parallel studies i n particle physics and astrophysics. The potential of some of them for dar k matter\, physics beyond the standard model\, and other exotic searches w ill be considered in the talk.\n\nhttps://indico.particle.mephi.ru/event/2 75/contributions/3218/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3218/ END:VEVENT BEGIN:VEVENT SUMMARY:Resonance structure of the charge-exchange strength function of Te llurium isotopes 128 and 130. DTSTART;VALUE=DATE-TIME:20221202T163500Z DTEND;VALUE=DATE-TIME:20221202T165000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3226@cern.ch DESCRIPTION:Speakers: Almaz Fazliakhmetov (INR RAS\, Kurchatov Institute\, MIPT)\nThis work presents the charge-exchange strength functions S(E) of isotopes 128\,130Te. Both experimental data on the S(E) charge-exchange st rength functions obtained in (3He\, t) reactions and the S(E) strength fun ctions calculated in the microscopic theory of finite fermi-systems are an alyzed. The resonance structure of the strength function S(E) is investiga ted\, and the Gamow-Teller and Pygmy resonances are distinguished. The re sonance structure of the power function S(E) is crucial for the calculatio n and analysis of neutrino capture by atomic nuclei. The possibility of us ing these isotopes in next-generation neutrino experiments is also discuss ed\, in particular in the Baxan Large Neutrino Telescope project.\n\nhttps ://indico.particle.mephi.ru/event/275/contributions/3226/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3226/ END:VEVENT BEGIN:VEVENT SUMMARY:Flavoured leptogenesis in a minimal type-I+II seesaw mechanism DTSTART;VALUE=DATE-TIME:20221202T162000Z DTEND;VALUE=DATE-TIME:20221202T163500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3217@cern.ch DESCRIPTION:Speakers: Sreerupa Chongdar (PhD Scholar\, Department of Physi cs and Astronomy\, National Institute of Technology Rourkela)\nThe seesaw mechanism is a popular approach to give a viable explanation for the sourc e of non-zero neutrino mass and for the cause of matter dominance of the U niverse - two of the most important open problems that could not be answer ed in the Standard Model (SM) of Particle Physics. A minimal extension of the SM is studied\, incorporating a type-I+II seesaw mechanism with only o ne right-handed neutrino and one Higgs triplet scalar. These heavy particl es contribute to the generation of tiny neutrino mass\, which is inversely proportional to the corresponding heavy particle masses. Considering that leptogenesis is achieved by the decay of the right-handed neutrino\, the new source of CP asymmetry comes solely from the decay of the right-handed neutrino by one-loop vertex correction involving the Higgs triplet scalar . The model's predictability enhances by introducing Fritzsch type 2-zero and 3-zero textures for the neutrino mass matrix and the non-diagonal char ged lepton mass matrix\, respectively. We execute the parameter space stud y following the latest neutrino oscillation parameter data\, and the pheno menological importance of this hybrid texture is analyzed. We study leptog enesis in the two-flavoured and three-flavoured regimes\, and we observe t hat the leptogenesis in different flavoured regimes\, within the temperatu re range $T\\subset[10^{10}\,10^{11}]$ GeV\, can efficiently predict baryo n asymmetry of the Universe within experimentally obtained range.\n\nhttps ://indico.particle.mephi.ru/event/275/contributions/3217/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3217/ END:VEVENT BEGIN:VEVENT SUMMARY:Hubble tension\, dark matter and neutrino DTSTART;VALUE=DATE-TIME:20221202T160500Z DTEND;VALUE=DATE-TIME:20221202T162000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3214@cern.ch DESCRIPTION:Speakers: Chitta Ranjan Das (Bogoliubov Laboratory of Theoreti cal Physics\, Joint Institute for Nuclear Research)\nIn the CDM universe\, the Hubble constant is the only cosmological parameter that can be measur ed both locally and indirectly by traditional cosmological methods like th e CMB\, baryon acoustic oscillations\, supernovae\, and big-bang nucleosyn thesis. It is also simple to comprehend\, and because the error bars are g etting so narrow\, the CDM model truly depends on it. Everyone awoke as a result of the Hubble stress. But we need more before we throw the model ou t the window. Most of the observations we have of the cosmos can be explai ned by a model with only six parameters\, most of which are limited at the percent level. We have been riding a tsunami of CDM model confirmation fo r the past 20 years\, so we must ask ourselves: If we are going to get rid of it\, what do we replace it with? The first stage is to depart from the model in small steps\, such as by adding one additional parameter. A solu tion like this used to suit the CMB data\, but it no longer does. For a wh ile\, one could argue that perhaps there is something like an effective ne utrino species that could solve the problem.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3214/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3214/ END:VEVENT BEGIN:VEVENT SUMMARY:Oscillations of astrophysical neutrinos in various gravitational b ackgrounds DTSTART;VALUE=DATE-TIME:20221202T155000Z DTEND;VALUE=DATE-TIME:20221202T160500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3216@cern.ch DESCRIPTION:Speakers: Maxim Dvornikov (Institute of Terrestrial Magnetism\ , Ionosphere and Radiowave Propagation (IZMIRAN))\nThe neutrino propagatio n and oscillations in various gravitational fields are studied. First\, we consider the neutrino scattering off a rotating black hole accounting for the neutrino spin precession. Then\, we study the evolution of flavor neu trinos\, emitted in a supernova explosion\, in stochastic gravitational wa ves. The astrophysical applications of the obtained results are considered .\n\nReferences\n\n 1. M. Dvornikov\, Neutrino scattering off a black hole surrounded by a\n magnetized accretion disk. JCAP 04\, 005 (2021) [arXiv:2102.00806].\n 2. M. Dvornikov\, Interaction of supernova neutrinos with stochastic gravitational waves. Phys. Rev. D 104\, 043018 (2021)\n [arXiv:2103.15464].\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3216/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3216/ END:VEVENT BEGIN:VEVENT SUMMARY:Baksan Large Neutrino Telescope Project DTSTART;VALUE=DATE-TIME:20221202T151500Z DTEND;VALUE=DATE-TIME:20221202T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3213@cern.ch DESCRIPTION:Speakers: Arslan Lukanov ()\nA large-volume liquid scintillato r neutrino detector is proposed to develop at the Baksan Neutrino Observat ory of Institute for Nuclear Research of the Russian Academy of Sciences i n the North Caucasus. The detector will be located at the depth of 4700 m. w.e. (meter of water equivalent). A target mass of the detector will be 10 kt. This multipurpose detector is being developed to study primarily natu ral neutrino and antineutrino fluxes namely fluxes of solar neutrinos\, ge oneutrinos and neutrinos from other astrophysical sources. This project\, if implemented\, would be a successor of the Borexino experiment and other European projects like LENA. The project is aimed to have a record energy resolution\, which along with its location at the large depth and relativ ely far distance from operating nuclear reactors will allow reaching a rec ord sensitivity to the natural neutrino and antineutrino fluxes. We report in the paper the present status of the project and describe some selectiv e results of the project first stage — the detector prototype with liqui d scintillator mass of 0.5 t. Results of R&D for the project second stage with 5 tons of liquid scintillator are presented too.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3213/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3213/ END:VEVENT BEGIN:VEVENT SUMMARY:Baksan Neutrino Observatory. Current status and future experiments . DTSTART;VALUE=DATE-TIME:20221202T150000Z DTEND;VALUE=DATE-TIME:20221202T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3221@cern.ch DESCRIPTION:Speakers: Valery Petkov (INR RAS)\nThe Baksan Neutrino Observa tory (BNO) of the Institute for Nuclear Research of the Russian Academy of Sciences is a unique complex of ground and underground installations desi gned to solve fundamental problems in various fields of science: from neut rino astrophysics to geophysics. The scientific research program of the BN O is constantly changing\, as old problems are exhausted and new problems appear\, and new physical installations are put into operation.\nThe repor t provides an overview of the current state and discusses the program for the development of the Baksan Neutrino Observatory. New results obtained a t operating BNO installations are presented.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3221/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3221/ END:VEVENT BEGIN:VEVENT SUMMARY:Detection of solar neutrinos from the CNO cycle with Borexino DTSTART;VALUE=DATE-TIME:20221202T144500Z DTEND;VALUE=DATE-TIME:20221202T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3215@cern.ch DESCRIPTION:Speakers: Alina Vishneva (DLNP JINR)\nCNO cycle of thermonucle ar reactions is one of the two main energy production mechanisms in the ma in sequence stars\, dominant in those heavier than the Sun.\nIn the contex t of solar physics\, despite its minor role in the energy production\, the CNO cycle is of a particular interest for it is directly related to the a bundance of heavy elements in the solar core.\nThe Borexino experiment pro vided the first experimental evidence of the CNO cycle in the Sun by detec ting neutrinos emitted in its reactions.\nThis measurement is made possibl e thanks to the unprecedented radiopurity of the detector and advanced met hods of constraining the correlated background allowing to pick out a rela tively weak and featureless CNO neutrino signal.\nIn this work we present the recent update of the CNO neutrino flux measurement along with the firs t evaluation of the C and N abundance in the Sun based on the neutrino dat a only.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3215/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3215/ END:VEVENT BEGIN:VEVENT SUMMARY:HIGH FLUX ELECTRON ANTINEUTRINO SOURCES BASED ON LI-8 ISOTOPE. THE POSSIBILITY TO CONSTRUCT THE COMPACT VARIANT DTSTART;VALUE=DATE-TIME:20221202T094500Z DTEND;VALUE=DATE-TIME:20221202T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3210@cern.ch DESCRIPTION:Speakers: Vladimir Lyashuk (ИЯИ РАН\, НИЦ Курча товский институт)\nThe creation of the artificial MeV-energ y electron antineutrino sources moves forward the serious demands for used isotopes and nuclear reactions for realization of the task: well defined and hard neutrino spectrum (taking in mind the proportionality of the cros s section to square energy)\; availability and purity of the chosen isotop e. The Li-7 (92.5% in the natural lithium) isotope fully satisfies to thes e requirements: at (n\,gamma)-activation of the high purity Li-7 isotope i n the high neutron flux the created Li-8 is β-decayed (T1/2= 0.84 s) with escape of hard and known electron antineutrino spectrum ( E(max)= 13 MeV and E(average)= 6.5 MeV). The spectrum of nuclear reactors traditionally u sed as intensive neutrino sources are characterized with significant error s [(4-6)% -precision at energy up to ~6 MeV] caused by unknown decay schem es\, change of fuel isotopes parts in time\, spent nuclear fuel close to r eactors\, that put together cause an unsolved puzzles in interpretation of neutrino oscillation [1]. The critical problem of the spectrum precision can be solved basing on the Li-7 isotope.\nThe construction of the intensi ve electron antineutrino-source is possible in different schemes (ensured with intensive neutron flux) on the base of: nuclear reactors\, in the ac celerator scheme with neutron producing target plus Li-7-blanket [2]. Real ization of the first variant is possible in the transport regime (when an activated Li-7 is pumped in the continuous close cycle through the active zone of the reactor). The strong advantages of the sheme is possibility: t o ensure the high neutrino flux in the compact volume (~cubic meter) of th e detector (close to the loop) [3] and to decrease the total spectrum erro rs in order of values [4].\nIn the accelerator scheme the proton beam stri ke into the heavy-element-target and produces the significant neutron yiel d for the lithium blanket irradiation. The scheme is considered for energi es up to ~600 MeV for different heavy targets (W\, Pb\, Vi\, Ta). The dens ity of Li-8 creation is simulated in details that allowed to propose an ef fective blanket scheme with central lithium containing volume enclosed by carbon (acting as an effective neutron reflector) and outer thick water la yer for diminish the neutron escape. The analysis of Li-8 distribution in the blanket allows to construct a small-volume elecytron antineutrino sour ce (with dimension ~70 cm) that is exclusively important for search of ste rile neutrinos in case of Delta_m2 ~ 1 eV2 [ 5] scale.\n\n1. C. Giunti\, Y .F. Li\, C.A. Ternes\, and Z. Xin. arXiv:2110.06820 (2022).\n2. V.I. Lyash uk & Yu.S. Lutostansky. Bull. Russ. Acad. Sci. Phys. 79\, 431–436 (2015) . https://doi.org/10.3103/S106287381504022X\n3. V.I. Lyashuk. JHEP06 (201 9)135. DOI: 10.1007/JHEP06(2019)135\n4. V.I. Lyashuk. Results Phys. 7\, 12 12 (2017). https://doi.org/10.1016/j.rinp.2017.03.025.\n5. J. Kopp\, M. Ma ltoni and T. Schwetz\, Phys. Rev. Lett. 107\, 091801 (2011). DOI:https://d oi.org/10.1103/PhysRevLett.107.091801\n\nhttps://indico.particle.mephi.ru/ event/275/contributions/3210/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3210/ END:VEVENT BEGIN:VEVENT SUMMARY:Tagged neutrino beam in the P2O experiment DTSTART;VALUE=DATE-TIME:20221202T093000Z DTEND;VALUE=DATE-TIME:20221202T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3211@cern.ch DESCRIPTION:Speakers: Anatoly Sokolov (National Research Centre "Kurchatov Institute" – IHEP\, Protvino\, Moscow region\, Russia)\nMomentum of an interacting neutrino is known with a poor accuracy in accelerator-based ne utrino experiments. The type and chirality of neutrino interacting in the detector are also often not exactly known in these experiments. These prob lems could be solved by using a new experimental method called neutrino ta gging. The method consists in exploiting the kinematics of the neutrino pr oduction process\, the $\\pi^\\pm \\rightarrow \\mu^\\pm + \\nu_\\mu(\\wid etilde \\nu_\\mu)$ decay. In tagged neutrino beams simultaneously with the registration of neutrino interaction in the detector a special tagging st ation measures the momentum of the parent particle\, as well as the moment um of charged particle from $\\pi^\\pm \\rightarrow \\mu^\\pm + \\nu_\\mu( \\widetilde \\nu_\\mu)$ decay. Then it is possible to reconstruct the m omentum and the type of a produced neutrino with a high accuracy. The main problem in tagged neutrino beams construction is how to relate the neutri no interaction to the corresponding parent particle decay. For this\, both temporal and spatial referencing of events registered in the neutrino det ector and in the tagging station detectors are used.\nIn this paper\, we d escribe a technique for the tagged neutrino production from $\\pi^\\pm \\ rightarrow \\mu^\\pm + \\nu_\\mu(\\widetilde \\nu_\\mu)$ decays at the U-7 0 (Protvino) accelerator complex. A description of the method and achievab le key performances is presented\, together with its potential benefits fo r long baseline experiment P2O (Protvino to ORCA).\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3211/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3211/ END:VEVENT BEGIN:VEVENT SUMMARY:Designing a tagged neutrino beam at the U-70 accelerator complex DTSTART;VALUE=DATE-TIME:20221202T091500Z DTEND;VALUE=DATE-TIME:20221202T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3212@cern.ch DESCRIPTION:Speakers: Roman Sinyukov (National Research Centre "Kurchatov Institute" – IHEP)\nSpecialized muon neutrino beams at high-energy proto n accelerators are produced as tertiary particles from $\\pi^\\pm\,K^\\pm \\rightarrow \\mu^\\pm + \\nu_\\mu(\\widetilde \\nu_\\mu)$ decays. The neu trino channel itself generally consists of a focusing system that forms $\ \pi\,K$ mesons beams at the required momentum and angular intervals and a free decay section ending by hadronic and muon absorbers.\nTo organize a n eutrino channel at IHEP\, it is proposed to use a proton beam with an 60 G eV energy\, slowly extracted from the accelerator U-70\, with an intensity of up to 10$^{13}$ particles per cycle\, about 9 seconds long. In the pap er the basic optical scheme of the neutrino channel is considered and the main design characteristics of the generated beams are discussed. The para meters of neutrino beams in the near and far detectors located at distance s of 100 m and 2595 km\, respectively\, after the end of the decay channel \, as well as characteristics of the $\\pi$-meson beam at the beginning of the decay region\, are presented. The parameters of tagged neutrino beams in the near and far detectors are given. The calculation results are give n for 10$^{13}$ protons dropped onto the target per accelerator cycle.\nA simplified scheme is used in the calculations\, in which the only sources of muon neutrinos are the decays of $\\pi$ mesons\, and all pions entering the matter during transport through the channel are excluded from a consi deration. Primary protons that do not interact in the target are also excl uded from a consideration.\n\nhttps://indico.particle.mephi.ru/event/275/c ontributions/3212/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3212/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutrino physics in the CERN project SND@LHC DTSTART;VALUE=DATE-TIME:20221202T090000Z DTEND;VALUE=DATE-TIME:20221202T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3220@cern.ch DESCRIPTION:Speakers: Natalia Polukhina (Lebedev Physical Institute of Rus sian Academy of Sciences)\nAt the beginning of 2021\, the project of the S ND@LHC experiment was adopted by CERN - this is a compact experiment desig ned to study all three neutrino flavors and search for weakly interacting particles at the LHC in the pseudorapidity range of $7.2\n\nhttps://indico .particle.mephi.ru/event/275/contributions/3220/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3220/ END:VEVENT BEGIN:VEVENT SUMMARY:AMoRE experiment: search for the neutrinoless double beta decay of 100Mo isotope DTSTART;VALUE=DATE-TIME:20221202T084500Z DTEND;VALUE=DATE-TIME:20221202T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3219@cern.ch DESCRIPTION:Speakers: Vasily Kornoukhov (НИЯУ МИФИ)\nAMoRE (Advanc ed Mo based Rare process Experiment) is an international collaboration sea rching for the neutrinoless double beta decay of 100Mo using scintillating molybdate crystals with metallic magnetic calorimeters as low temperature sensors. AMoRE-I\, as the first phase experiment with 6\,2 kg of the calc ium and lithium molybdate crystals\, has been installed at the Yangyang un derground laboratory (Y2L) and is accumulating the data. AMoRE-II main pha se experiment\, using 200 kg of lithium molybdate crystals\, will be insta lled at the Yemi underground laboratory (Yemilab)\, newly constructed at d eeper (1 km overburden) and larger space for future experiments. Here\, we present the current status of the AMoRE-I and preparation of the AMoRE-II phase.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3219/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3219/ END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of LEGEND-200 experiment DTSTART;VALUE=DATE-TIME:20221202T083000Z DTEND;VALUE=DATE-TIME:20221202T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3225@cern.ch DESCRIPTION:Speakers: Nadezda Rumyantseva (JINR)\nThe LEGEND experiment is designed to search for neutrinoless double beta decay of Ge-76. Its first stage\, LEGEND-200\, is located at the Laboratori Nazionali del Gran Sass o (LNGS\, Italy). About 200 kg of germanium detectors isotopically enriche d in Ge-76 are going to be immersed in liquid argon (LAr) cryostat togethe r with the LAr instrumentation system. The LEGEND-200 goal is to improve t he background by a few times compared with the predecessors and reach the double-beta sensitivity of 10^27 years. The commissioning of the experime nt is ongoing. In May 2022 main elements of the installation were assemble d and about 60 kg of germanium detectors were immersed in a cryostat in or der to debug all experimental systems. At the time of the conference\, an almost full-scale launch of the experiment should be completed using all a vailable detectors (~100 detectors with total mass ~ 140 kg of enriched ge rmanium).\nThe aim of the talk is to present the actual status of LEGEND-2 00 mainly focus on the commissioning details.\n\nhttps://indico.particle.m ephi.ru/event/275/contributions/3225/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3225/ END:VEVENT BEGIN:VEVENT SUMMARY:Sensitivity of DarkSide-50 experiment to double K-capture on Ar-36 . DTSTART;VALUE=DATE-TIME:20221202T081500Z DTEND;VALUE=DATE-TIME:20221202T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3223@cern.ch DESCRIPTION:Speakers: Olga Lychagina (JINR\, MSU)\nThe search for neutrino enter code hereless double $\\beta$-decay\, in particular double K-capture \, is of great importance. Confirmation of its existence would mean that t he neutrino is Majorana particle. The investigation of this process provid es one of the best opportunities to study physics beyond the Standard Mode l. The double electron capture process 2EC2$\\nu$ was experimentally disco vered only once in the XENON1T experiment\, and the search for 2EC0$\\nu$ has so far been unsuccessful. These processes are very difficult to regist er. There are 34 candidate isotopes in which the 2EC2$\\nu$ process is pos sible\; 12 nuclei can experience only two-neutrino 2$e$-capture. Previousl y\, the search for these processes was carried out on $^{78}$Kr and $^{124 }$Xe\, since the lower theoretical predictions of their half-lives lie in the experimentally achievable region is $\\sim$ 10$^{22}$ years\, and they are relatively accessible isotopes of inert gases. The purpose of this wo rk is to evaluate the sensitivity of the DarkSide-50 experiment to two-neu trino double electron capture on the $^{36}$Ar isotope. To achieve the goa l of the study\, the following tasks were performed:\n\n- development of a software module for constructing the energy spectrum of double electron c apture (2EC2$\\nu$) on $^{36}$Ar\;\n- vapplication of the detector respons e function due to this effect for the DarkSide-50 detector\;\n- statistica l analysis of data using a model spectrum\;\n- obtaining a lower limit for the half-life of $^{36}$Ar.\n\nThe novelty of this work is in the fact th at such processes have not previously been studied on the argon isotope $^ {36}$Ar. The analysis performed in this work will remain relevant in the f uture.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3223/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3223/ END:VEVENT BEGIN:VEVENT SUMMARY:The KamLAND-Zen experiment - a decade after the first result DTSTART;VALUE=DATE-TIME:20221202T080000Z DTEND;VALUE=DATE-TIME:20221202T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3224@cern.ch DESCRIPTION:Speakers: Alexandr Kozlov (MEPhI)\nThe KamLAND-Zen experiment provided new stringent constraints on the neutrinoless double-beta (0νβ β) decay half-life in Xe-136 using a xenon-loaded liquid scintillator. Im proved search was based on an upgraded detector with almost double the amo unt of enriched xenon and an ultra-low radioactivity container\, correspon ding to an exposure of 970 kg yr of Xe-136. This new data provides valuabl e insight into backgrounds\, especially from cosmic muon spallation of xen on\, and has required the use of novel background rejection techniques. We obtained a lower limit for the 0νββ decay half-life of T1/2 > 2.3 × 1 0^26 yr at 90% C.L.\, corresponding to upper limits on the effective Major ana neutrino mass of 36 – 156 meV using commonly adopted nuclear matrix element calculations.\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3224/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3224/ END:VEVENT BEGIN:VEVENT SUMMARY:Exposition of the RED-100 two-phase emission detector at the Kalin in NPP for the study of coherent elastic neutrino scattering off Xenon nuc lei DTSTART;VALUE=DATE-TIME:20221201T094500Z DTEND;VALUE=DATE-TIME:20221201T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3209@cern.ch DESCRIPTION:Speakers: Alexander Bolozdynya (NRNU MEPhI)\nThe RED-100 two-p hase emission detector with 200 kg of liquid xenon as a working medium was exhibited at a distance of 19 m from the core of the VVER-1000/320 nuclea r power reactor at the 4th power unit of the Kalinin NPP in 2021-2022. Due to its high sensitivity to weak ionization signals (down to single electr ons)\, the RED-100 detector was used to observe elastic coherent scatterin g of electron antineutrinos off xenon nuclei. A set of experimental data w as obtained in the regimes with the reactor on and off. The results obtain ed are discussed.\n\nhttps://indico.particle.mephi.ru/event/275/contributi ons/3209/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3209/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of nuGeN experiment at Kalinin Nuclear Power Plant on coher ent elastic neutrino-nucleus scattering DTSTART;VALUE=DATE-TIME:20221201T093000Z DTEND;VALUE=DATE-TIME:20221201T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3208@cern.ch DESCRIPTION:Speakers: Alexey Lubashevskiy (JINR)\nThe $\\nu$GeN experiment is aimed to study neutrino scattering at the close vicinity of the reacto r core of Kalinin Nuclear Power Plant (KNPP) at Udomlya\, Russia. Its main interests are connected with the detection of coherent elastic neutrino-n ucleus scattering (CE$\\nu$NS)\, the search for the magnetic moment of neu trino and other rare processes. The experimental setup is constructed unde r reactor unit #3 of KNPP at a distance of about 10 m from the center of t he 3.1 GW$_{th}$ core. In this way\, we obtain an enormous antineutrino fl ux of more than 5x10$^{13}$ $\\nu$/cm$^2$/s. Materials of the reactor surr ounding provide about 50 m w.e. overburden\, that serves as a good shieldi ng against cosmic radiation. In combination with a low ambient background\ , it gives us a unique opportunity to investigate antineutrino properties at the best experimental location in the world. A special lifting mechanis m allows moving the spectrometer towards the reactor core changing the neu trino flux and thus suppressing main systematic errors caused by possible long-term instability and insufficient knowledge of neutrino flux. To dete ct signals from the neutrino scattering we use high-purity low-threshold g ermanium detector surrounded by passive and active shielding. A specially developed acquisition system allows suppressing events that correspond to noise. A detailed description of the experimental setup will be shown. The current status of data taking and comparison of the spectra with reactor on and off regimes will be presented.\n\nhttps://indico.particle.mephi.ru/ event/275/contributions/3208/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3208/ END:VEVENT BEGIN:VEVENT SUMMARY:The COHERENT experiment DTSTART;VALUE=DATE-TIME:20221201T091500Z DTEND;VALUE=DATE-TIME:20221201T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3203@cern.ch DESCRIPTION:Speakers: Alexey Konovalov (MEPhI)\nThe COHERENT collaboration aims to test the Standard model with the help of coherent elastic neutrin o-nucleus scattering (CEvNS). The experimental effort involving multiple d etectors takes place at the Spallation Neutron Source in Oak Ridge Nationa l Laboratory. In this talk we decribe the results\, status\, and prospects of the COHERENT program. In particular\, recently evaluated limits on the non-standard neutrino-quark couplings and parameters of accelarator produ ced dark matter are presented.\n\nhttps://indico.particle.mephi.ru/event/2 75/contributions/3203/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3203/ END:VEVENT BEGIN:VEVENT SUMMARY:Determination of neutrino oscillation parameters of transitions to sterile states in the BEST-2 experiment DTSTART;VALUE=DATE-TIME:20221201T090000Z DTEND;VALUE=DATE-TIME:20221201T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3222@cern.ch DESCRIPTION:Speakers: Valery Gorbachev (BNO INR RAS)\nIn measurements with intense artificial sources of monochromatic neutrinos on gallium targets\ , a capture rate equal to 0.80 ± 0.05 of the expected was obtained. The m easured lack of capture rate is known as the gallium anomaly (GA). Neutrin o oscillation transitions with large values of the parameter Δm2 (~ 1 eV2 ) are considered a possible cause of GA. In the proposed BEST-2 experiment \, the GA will not only be tested with high accuracy\, but also the parame ters of the oscillations will be measured if they are in the sensitivity r ange of the experiment. In the BEST-2 experiment\, a gallium target consis ting of 50 tons of metallic gallium and divided into 3 independent zones w ill be irradiated with neutrinos from a 65Zn source.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3222/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3222/ END:VEVENT BEGIN:VEVENT SUMMARY:New nuclear reactor fissile isotopes antineutrino spectra DTSTART;VALUE=DATE-TIME:20221201T084500Z DTEND;VALUE=DATE-TIME:20221201T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3207@cern.ch DESCRIPTION:Speakers: Valery Sinev (INR RAS)\nNew antineutrino spectra of fissile isotopes constituting the fuel of a nuclear reactor have been obta ined. A combined technique was used: calculation of the antineutrino spect ra and their fitting to those obtained in the experiment at the Rovno NPP in the 1980s. The cross sections of fissile isotopes calculated with these spectra perfectly describe the experimentally obtained cross section in t he Double Chooz experiment $^{DC}\\sigma_f = (5.71 \\pm 0.06) \\cdot 10^{- 43}$ cm$^2$/fission. The cross section obtained from the calculated spectr a for the same composition of nuclear reactor core $^{INR}\\sigma_f = (5.8 2 \\pm 0.12) \\cdot 10^{-43}$ cm$^2$/fission. For the obtained spectra\, t here is no problem of spectrum bump in the region of 5 MeV in the observed energy of the positron spectrum.\n\nhttps://indico.particle.mephi.ru/even t/275/contributions/3207/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3207/ END:VEVENT BEGIN:VEVENT SUMMARY:iDREAM detector at Kalinin NPP: antineutrino signal\, backgrounds and prospects DTSTART;VALUE=DATE-TIME:20221201T083000Z DTEND;VALUE=DATE-TIME:20221201T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3205@cern.ch DESCRIPTION:Speakers: Evgeny Litvinovich (NRC Kurchatov Institute)\nIndust rial Detector of REactor Antineutrinos for Monitoring (iDREAM) is a protot ype detector designed to demonstrate the feasibility of antineutrino detec tors for remote reactor monitoring and safeguard purposes. The 1 ton Gd-do ped liquid scintillator detector is mounted in the Kalinin nuclear power plant (Russia)\, 20 m from the 3 GW$_{th}$ VVER type commercial reactor. A ntineutrinos are detected via inverse beta decay on protons. The detector took data both in reactor ON and OFF modes. In this talk the iDREAM measur ements of the accidental and correlated backgrounds will be discussed. T he iDREAM antineutrino data and the detector prospects will be reviewed  in the framework of applied antineutrino physics.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3205/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3205/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of the absolute reactor antineutrino energy spectrum dependence on the fuel composition DTSTART;VALUE=DATE-TIME:20221201T081500Z DTEND;VALUE=DATE-TIME:20221201T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3206@cern.ch DESCRIPTION:Speakers: Nataliya Skrobova ()\nDANSS is a one cubic meter hig hly segmented solid scintillator detector. It consists of 2500 scintillato r strips\, covered with gadolinium loaded reflective coating and read out with SiPMs and PMTs via wavelength shifting fibers. DANSS is placed under a 3.1 GW industrial reactor at the Kalinin NPP (Russia) on a movable plat form. The distance from the reactor core center is varied from 10.9 m to 1 2.9 m on-line. The inverse beta decay (IBD) process is used to detect anti neutrinos. DANSS detects about 5000 IBD events per day with the background from cosmic muons at the level of few percent.\nIn this talk we present r esults on the neutrino spectrum dependence on the fuel composition. We hav e also measured the reactor power using the IBD event rate during almost 6 years with the statistical accuracy 1.5% in 2 days and with the relative systematic uncertainty of about 0.5%. The limits in sterile neutrino param eter space based on information about absolute counting rates are also pre sented.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3206/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3206/ END:VEVENT BEGIN:VEVENT SUMMARY:Resent results from the DANSS experiment DTSTART;VALUE=DATE-TIME:20221201T080000Z DTEND;VALUE=DATE-TIME:20221201T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3204@cern.ch DESCRIPTION:Speakers: Igor Zhitnikov (JINR)\nSolid state spectrometer of r eactor antineutrino DANSS is placed\nbelow the core of the 3.1 GWt_th indu strial nuclear reactor of \nKalininskaya NPP. In the closest position to t he reactor \nthe detector counts more than 5000 inverse beta-decay (IBD) e vents\nper day with background below 2 %. The distance to the reactor is\n changed weekly between 10.9 and 12.9 m\, which allows to make a \nmodel-fr ee search for a short range neutrino oscillations. Spectrum\nevolution wit h the distance is measured directly by the same detector.\n\nThe talk is b ased on the statistics of 6 million events\,\nobtained during 6 years betw een April 2016 and March 2022. \nWe present limits in the short range osci llation \nparameter space. We also compared the anti-neutrino \nenergy spe ctrum with theoretical predictions and \nconfirm a bump in their ratio sim ilar to the bumps \nobserved in several other experiments.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3204/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3204/ END:VEVENT BEGIN:VEVENT SUMMARY:The Result of the Neutrino-4 Experiment and the Cosmological Const raints on the Sterile Neutrino DTSTART;VALUE=DATE-TIME:20221201T074000Z DTEND;VALUE=DATE-TIME:20221201T080000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3202@cern.ch DESCRIPTION:Speakers: Anatolii Serebrov (NRC "Kurchatov Institute" - PNPI) \nWe present a short discussion of the Neutrino-4 experimental results and the results of other experiments searching for the sterile neutrino. We e stimated the contribution of the sterile neutrino with parameters $\\Delta m^2_{14} \\approx 7.3 \\text{eV}^2$ and $\\sin^22\\theta_{14} \\approx 0 .36$ obtained in the Neutrino-4 experiment to the energy density of the Un iverse. We address the contradiction between the measured sterile neutrino parameters and the constraints on the sterile neutrino from cosmology. Wi th this article\, we want to draw attention to the problem of the contradi ction between experiment and theory\, in order to inspire the search for t heoretical models that include a sterile neutrino with mass in the region of several eV\, and to the necessity to sufficiently increase the precisio n of the experiment.\n\nhttps://indico.particle.mephi.ru/event/275/contrib utions/3202/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3202/ END:VEVENT BEGIN:VEVENT SUMMARY:Possible analogs of the Hoyle state in heavier 4N nuclei DTSTART;VALUE=DATE-TIME:20221130T093000Z DTEND;VALUE=DATE-TIME:20221130T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3189@cern.ch DESCRIPTION:Speakers: Andrey Danilov (NRC Kurchatov Institute)\nCluster st ructure plays an important role in nuclei\, in particular\, in light ones. One of the common types of clusters is the α-particle. Consisting of fou r nucleons\, the alpha particle is tightly bound and has no excited state up to 20 MeV and behaves as a well-established subunit in nuclei. \n\nCons iderable attention has been drawn to the studies of $\\alpha$-cluster stat es in $^{12}$C\, especially the second 0$^+$ state\, located at E$_x$ = 7. 65 MeV\, which is 0.38 MeV above the 3$\\alpha$ threshold. This state was named Hoyle state by name of the astrophysicist who predicted it. It plays an extremely important role in nucleosynthesis. The properties of the Hoy le state in $^{12}$C determine the ratio of carbon to oxygen formed in the stellar helium burning process that strongly affects the future evolution of stars. A detailed analysis of the structure of $^{12}$C with the micro scopic 3$\\alpha$ cluster model was made about 30 years ago. The 3$\\alpha $ generator coordinate method (GCM) and 3$\\alpha$ resonating group method (RGM) calculations showed that the Hoyle state in $^{12}$C has a loosely coupled 3$\\alpha$ structure and an enlarged radius. Modern microscopic ca lculations in the framework of cluster models such as the antisymmetrized molecular dynamics (AMD) and the fermionic molecular dynamics (FMD) also p redict an increased radius of this above-threshold cluster state. Within $ \\alpha$-particle Bose-Einstein condensation ($\\alpha$BEC) model the Hoyl e state is considered to be the simplest example of the $\\alpha$-condense d state with increased radius.\n\nA question naturally arises: do analogs of the Hoyle state exist in more massive 4N nuclei. First possible candida te is the $^{16}$O. $\\alpha$BEC model predicted that 0$^+$ states\, parti cularly the 4th or the 6th\, can be possible analogs of the Hoyle state an d have $\\alpha$-condensed structure. Our analysis within Modified diffrac tion model has shown that 0$^+_2$-0$^+_6$ states have normal non-increased radii.\n\nThe next goal is $^{20}$Ne. The root mean square radii of $^{20 }$Ne in the short-lived excited states were estimated for the first time f rom the analysis of $\\alpha$ + $^{20}$Ne diffraction scattering. Differen tial cross sections of the elastic and inelastic $\\alpha$ + $^{20}$Ne sca ttering in the incident energy range from a few MeV/nucleon up to 100 MeV/ nucleon were analyzed by the modified diffraction model. No significant ra dius enhancement for the members of K$^\\pi$ = 0$^+_1$ and K$^\\pi$ = 2$^ −$ bands in comparison with the ground state was observed. At the same t ime 20$\\%$ radius enhancement was obtained for the K$^\\pi$ = 0$^−_1$ b and members. Moreover\, for the 0$^+_2$ state located above $\\alpha$-emis sion threshold increased radius was observed. This result can speak in fav or of possible $\\alpha$-condensate structure of the 0$^+_2$ state and can be considered as a possible analog of the famous 7.65-MeV 0$^+_2$ Hoyle s tate of $^{12}$C.\n\nhttps://indico.particle.mephi.ru/event/275/contributi ons/3189/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3189/ END:VEVENT BEGIN:VEVENT SUMMARY:Diffusion of relativistic runaway electron avalanches DTSTART;VALUE=DATE-TIME:20221201T074500Z DTEND;VALUE=DATE-TIME:20221201T080000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3114@cern.ch DESCRIPTION:Speakers: Alexander Sedelnikov (MIPT\, LPI RAS)\nDiffusion of relativistic runaway electron avalanches\n\nOne of the unsolved problems i n atmospheric physics is the construction of a model of Terrestrial Gamma- ray Flashes (TGFs). This phenomenon was first discovered in 1994 by Comp ton Gamma Ray Observatory [1] and was observed by other space gamma-ray ob servatories such as Fermi [2]\, which were created for observing gamma rad iation from astrophysical sources. It has been established that avalanches of relativistic runaway electrons avalanches (RREA) accelerated by an ele ctric field in thunderclouds are the sources of these bursts [3]. However\ , research shows that the existence of RREA is not sufficient to generate a TGF [4]. In an attempt to settle this issue a model of relativistic feed back mechanism was suggested by Joseph Dwyer. The Dwyer model does not tak e into account diffusion of RREAs and the finite transverse size of the ac celerating region. RREAs of new generations resulting from feedback may be created outside the acceleration region\, which may lead to a decrease in the number of new avalanches and an increase in the requirements for self -sustaining RREA production by the feedback.\n\nIn this work the transvers e propagation of avalanches was described using a modified two-dimensional diffusion equation. A correction to the criterion for self-sustaining pro duction of RREAs was obtained:\n\n$\\Gamma_d = \\Gamma \\cdot \\exp(-\\lef t(\\frac{2.403}{R}\\right)^2 D \\tau)$\n\nHere $\\Gamma$ is a feedback coe fficient without correction\, R is the transverse size of the accelerating area and $D \\tau$ is the diffusion coefficient multiplied by the average time of creation of new generation. Monte Carlo simulation using GEANT4 w as also performed to calculate the correction to feedback coefficient. For example\, for an air density corresponding to an altitude of 10 km above sea level for an acceleration zone with a size of 400 m in the longitudina l direction and 500 m in the transverse direction $\\Gamma_d \\approx 0.99 \\cdot \\Gamma$. It can be seen that taking into account the transverse s ize does not make a significant contribution to the feedback coefficient a nd therefore almost does not distort the criterion for self-sustaining RRE A production.\n\nReferences\n\n1. Fishman G. J. et al. Discovery of intens e gamma-ray flashes of atmospheric origin //Science. – 1994. – Т. 264 . – N. 5163. – С. 1313-1316.\n2. Mailyan B. G. et al. The spectroscop y of individual terrestrial gamma‐ray flashes: Constraining the source p roperties //Journal of Geophysical Research: Space Physics. – 2016. – Т. 121. – N. 11. – С. 11\,346-11\,363.\n3. Dwyer J.R. A fundamental limit on electric fields in air //Geophysical Research Letters. – 2003. – Т. 30. – N. 20.\n4. Gurevich A. V.\, Zybin K. P. Runaway breakdown and electric discharges in thunderstorms //Physics-Uspekhi. – 2001. – Т. 44. – N. 11. – С. 1119.\n\nhttps://indico.particle.mephi.ru/event /275/contributions/3114/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3114/ END:VEVENT BEGIN:VEVENT SUMMARY:Search of periodical and aperiodical variations of nucleus weak decay parameters DTSTART;VALUE=DATE-TIME:20221130T091500Z DTEND;VALUE=DATE-TIME:20221130T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3102@cern.ch DESCRIPTION:Speakers: Sergey Mayburov (Lebedev inst. of Physics)\nOn behal f of BSTU-PhIAN-INF collaboration\n\nPossible temporal variations of nucl eus decay parameters were studied extensively in the last years\, their observation can be the signal of unknown physical effects. Several experi ments reported the annual and daily decay rate oscillations in alpha and beta-decays of some radioactive nuclides at the level of .05 % [1\,2]. Al so\, correlation of Mn-54 e-capture decay rate with electromagnetic solar activity was reported [1]. BSTU - PhIAN - INF collaboration studies dec ay rate variations in \nCo-60 β-decay and Fe-55 inverse β-decay (e-cap ture) isotopes. 1.3 Mev γ-quanta which accompanies Co-60 beta-decay were detected by cooled germanium semiconductor spectrometer. Fe-55 e-capture accompanied by X-ray with energy 5\,9 or 6\,4 KeV which in our set-up de tected by cooled Si-Pin detector. Measurements of decay rate performed in 2016 -2021 \, demonstrate that together with observed Fe-55 decay exponent with life-time 1004 days\, oscillation period 29.5 +/- 1.5 days corresp onding to moon month is found with amplitude (.22 +/- .04)% \; theoretical model of such decay rate deviations considered in [3\,4].\n Pos sible influence of electromagnetic solar activity was studied during 2015 – 2022 for Fe-55 decay rate\, simultaneously with C0-60 decay rate in No vosibirsk INF at the distance 2800 km from Moscow [5]. The deviations of similar form and size from exponential decay low at the average level (. 55 +/-.004)% were detected in both experiments during October- December 20 18. Supposedly\, they can be related to solar activity minimum started i n the beginning of 2018 and continued till the end of 2020. In addition\, ten decay rate dips of the order 1 % with duration from 50 to 208 hours were found. It is shown that such dips occur 48 – 80 hours before X-ray solar flare events with significant reliability\, existence of such corre lations can have important practical applications [5]. SOLARIS project pl ans to perform simultaneous measurements of Fe-55\, Co-60 decay parameters at\n International Space Station and Earth labs. to study their correlat ions with electromagnetic solar activity\, in particular\, with X-ray sola r flare events .\n\n\n1. E. Fischbach et al. \, Rev. Space Sci. 145\, 285 (2009)\; Astrop. Phys. 59\,47 (2014)\n\n2. E. Alekseev et al. \, Phys. Par t. Nucl. 47\, 1803 (2016)\; ibid. 49\, 557 (2018)\n\n3. S. Mayburov Int. J . Theor. Phys. 60\, 630 (2021)\n \n4. S. Mayburov Phys. Part. Nucl. 51\, 4 58 (2020)\n\n5. S. Bogachev et al. J. Phys.: Conf. Series 1690\, 012028 -012035 (2020)\n\nhttps://indico.particle.mephi.ru/event/275/contributions /3102/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3102/ END:VEVENT BEGIN:VEVENT SUMMARY:Cross sections for nuclear fission by neutrons with energies up to 200 MeV: experiment and theory DTSTART;VALUE=DATE-TIME:20221130T170000Z DTEND;VALUE=DATE-TIME:20221130T171500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3193@cern.ch DESCRIPTION:Speakers: A.L. Barabanov (National Research Centre “Kurchato v Institute”\, Moscow\, Russia)\nThe design of nuclear installations bas ed on accelerators (or Accelerator Driven Systems - ADS) requires sufficie ntly accurate data on the total and differential cross sections for nuclea r fission by neutrons with energies up to several hundred MeV. The situati on with the reliability and completeness of such data and other important characteristics associated with them\, which cannot always be directly mea sured in the interaction of neutrons with nuclei\, can be significantly im proved by modeling such interactions. However\, the current state of the t heory of nuclear fission\, based on the model of transition states at fiss ion barriers\, is not entirely satisfactory. A reasonable description of t he dependence of the fission cross sections on the neutron energy is achie ved only by using a very significant number of adjustable parameters. This is connected\, in particular\, with insufficient information about the sp ectra of transition states. Such information can be obtained if not only t otal but also differential fission cross sections are included in the simu lation process. Indeed\, according to the same model of transition states\ , the angular distribution of fragments is determined by how the fission p robability depends on the projection K of the spin of the fissioning nucle us onto the nucleus deformation axis at the barrier. However\, this depend ence is determined by what values of K characterize the rotational bands o f transition states at the barriers. This work briefly describes the curre nt state of experimental studies of the total and differential cross secti ons for nuclear fission by neutrons with energies up to 200 MeV\, as well as the progress made in calculating these characteristics.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3193/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3193/ END:VEVENT BEGIN:VEVENT SUMMARY:Isoscalar giant monopole resonance in the Ca isotopes DTSTART;VALUE=DATE-TIME:20221130T164500Z DTEND;VALUE=DATE-TIME:20221130T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3196@cern.ch DESCRIPTION:Speakers: Nikolay Arsenyev (Bogoliubov Laboratory of Theoretic al Physic\, Joint Institute for Nuclear Research)\nA comprehensive analysi s of the isoscalar giant monopole resonance (ISGMR) has long been a subjec t of extensive theoretical and experimental research [1\,2]. The ISGMR pro perties are presently an important problem not only from the nuclear struc ture point of view [2\,3] but also because of the special role they play i n many astrophysical processes such as prompt supernova explosions [4] and the interiors of neutron stars [5].\n\nThe random phase approximation (RP A) with the Skyrme-type energy density functional (EDF) is the most widely used theoretical model for describing the ISGMR [2\,3]. The study of the monopole strength distribution in the region of giant resonance involves t aking into account a coupling between the simple particle-hole excitations and more complicated (two- and three-phonons) configurations [3\,6]. The main difficulty is that the complexity of calculations beyond standard RPA increases rapidly with the size of the configuration space\, and one has to work within limited spaces. Using a finite rank separable approximation for the residual particle-hole interaction derived from the Skyrme EDF on e can overcome this numerical problem [7\,8].\n\nIn the present report\, w e discuss the effects of the coupling between one-\, two-\, and three-phon on terms in the wave functions on the monopole strength distribution in th e double-magic nuclei 40\,48Ca. Using the same set of parameters\, we desc ribe available experimental data [9\,10]. The effects of the phonon-phonon coupling (PPC) lead to a redistribution of the main monopole strength to lower energy states and into higher energy tail [11]. The PPC predictions of the fine structure of the ISGMR in the Ca isotopes are in good agreemen t with the fine structure which is extracted from experimental data analys is [12].\n\nThis work was supported by the Russian Science Foundation (Gra nt No. RSF-21-12-00061).\n\n 1. J.P. Blaizot\, Phys. Rev. 64\, 171 (1980). \n 2. U. Garg\, and G. Colò\, Prog. Part. Nucl. Phys. 101\, 55 (2018).\n 3. N.N. Arsenyev\, and A.P. Severyukhin\, Universe. 7\, 145 (2021).\n 4. H .A. Bethe\, Rev. Mod. Phys. 62\, 801 (1990).\n 5. N.K. Glendenning\, Phys. Rev. Lett. 57\, 1120 (1986).\n 6. V.G. Soloviev\, Theory of Atomic Nuclei : Quasiparticles and Phonons. Bristol/Philadelphia 1992.\n 7. N.V. Giai\, Ch. Stoyanov\, and V.V. Voronov\, Phys. Rev. C. 57\, 1204 (1998).\n 8. A.P . Severyukhin\, V.V. Voronov\, and N.V. Giai\, Eur. Phys. Jour. A. 22\, 39 7 \n(2004).\n 9. K. Howard et al.\, Phys. Lett. B. 801\, 135185 (2020).\n 10. S.D. Olorunfunmi et al.\, Phys. Rev. C. 105\, 054319 (2022).\n 11. N.N . Arsenyev\, and A.P. Severyukhin\, Phys. At. Nucl. 85\, (2022) in press.\ n 12. S.D. Olorunfunmi et al.\, in preparation.\n\nhttps://indico.particle .mephi.ru/event/275/contributions/3196/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3196/ END:VEVENT BEGIN:VEVENT SUMMARY:Evolution of the phenomenologically determined collective potentia l along the chain of zr isotopes DTSTART;VALUE=DATE-TIME:20221130T163000Z DTEND;VALUE=DATE-TIME:20221130T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3192@cern.ch DESCRIPTION:Speakers: Evgenii Mardyban (Joint institute of nuclear researc h)\nThe properties of the collective low-lying states of Zr isotopes indic ate that some of these states are mainly spherical and the other are mainl y deformed ones. In our previous works [1\,2]\, it was shown that the stru cture of low-lying collective states of $^{96}$Zr can be satisfactorily de scribed within the framework of a geometric collective model based on the Bohr Hamiltonian with a potential that supports the existence of various f orms of the nucleus. Based on these results\, the question arises about th e possibility of investigating the properties of low-lying collective stat es of $^{92−102}$Zr on the basis of a five-dimensional geometric quadrup ole collective model.\n The quadrupole-collective Bohr Hamiltonian depen ding on both $\\beta$ and $\\gamma$ shape variables with a potential havin g spherical and deformed minima\, is applied. The relative depth of two mi nima\, height and width of the barrier\, rigidity of the potential near bo th minima are determined so as to achieve the best possible description of the observed properties of the low-lying collective quadrupole states of $^{92−102}$Zr.\n Satisfactory agreement with the experimental data on the excitation energies and the E2 reduced transition probabilities is obt ained. The evolution of the collective potential with increase of $A$ is d escribed and the distributions of the wave functions of the collective sta tes in $\\beta-\\gamma$ plane are found.\nIt is shown that the low-energy structure of $^{92−102}$Zr can be described in a satisfactory way within the Geometrical Collective Model with the Bohr Hamiltonian. The $\\beta$- dependence of the potential energy is fixed to describe the experimental d ata in a best possible way. The resulting potential evolves with 𝐴 incr ease from having only one spherical minimum in $^{92}$Zr\, through the pot entials having both spherical and deformed minima\, to the potential with one deformed minimum in $^{102}$Zr. A $\\beta$-dependence of the wave func tions is presented in a set of figures illustrating their distribution ove r $\\beta$ [3].\n\n1. E. V. Mardyban\, E. A. Kolganova\, T. M. Shneidman\, R. V. Jolos\, and N. Pietralla\, Phys. Rev. C 102\, 034308 (2020).\n2. D. A. Sazonov\, E. A. Kolganova\, T. M. Shneidman\, R. V. Jolos\, N. Pietral la\, and W. Witt\, Phys. Rev. C 99\, 031304(R) (2019).\n3. E. V. Mardyban\ , E. A. Kolganova\, T. M. Shneidman\, R. V. Jolos\, Phys. Rev. C 105\, 024 321 (2020).\n\nhttps://indico.particle.mephi.ru/event/275/contributions/31 92/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3192/ END:VEVENT BEGIN:VEVENT SUMMARY:Nuclear mass table based on Bayesian estimation of binding energy difference expressions DTSTART;VALUE=DATE-TIME:20221130T161500Z DTEND;VALUE=DATE-TIME:20221130T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3197@cern.ch DESCRIPTION:Speakers: Konstantin Stopani (Skobeltsyn Institute of Nuclear Physics)\nMasses of nuclei constitute an important part of the nuclear dat a required by many astrophysical models. We describe a method of obtaining Bayesian estimates of difference expressions of nuclear binding energies for medium and heavy nuclei\, such as the residual neutron-proton interact ion energy $\\Delta_{np}$ and the well-known Garvey--Kelson expressions\, using the Markov chain Monte-Carlo (MCMC) algorithm. Tikhonov regularizati on approach is used to impose the theoretically\nexpected requirement of s mooth behaviour of the obtained estimates as a function of the nuclear mas s number. With the help of these estimates an extrapolation of experimenta l nuclear masses from the AME database into the region of neutron- and pro ton-rich exotic nuclei is performed. The maximum range of extrapolation is determined by the estimated variance of the MCMC result and uncertainties of the experimental binding energies. The RMS error of masses of 65 new n uclei included in AME2020 in comparison with the prediction based on AME20 16 amounts to 367 keV. The resulting mass values and nucleon drip lines ar e compared with other theoretical mass models at different values of the r egularization parameter.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3197/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3197/ END:VEVENT BEGIN:VEVENT SUMMARY:The Fayans energy-density functional. Constraints from the equatio ns of state. Consequences for the Gamow-Teller resonances. DTSTART;VALUE=DATE-TIME:20221130T160000Z DTEND;VALUE=DATE-TIME:20221130T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3200@cern.ch DESCRIPTION:Speakers: Ivan Borzov (NRC KI)\nI.N. Borzov 1\,2\, S.V. Toloko nnikov1\,3 \n1 National Research Centre “Kurchatov Institute”\, Moscow \, Russia\n2Bogolubov Laboratory of Theoretical Physics\, Joint Institute of Nuclear Research\, Dubna\, Russia\n3 Moscow Institute of Physics and Te chnology (National Research University)\, Dolgoprudny\, Russia\n†E-mail: Borzov_IN@nrcki.ru\, cc: ibor48@mail.ru\n\nThe equations of state for inf inite\, symmetric nuclear matter (SNM) and pure neutron matter (PNM) are a nalyzed in terms of the Fayans energy density functional. DF3-a functional [1] tuned via previously unused volume (isovector) parameter h-2. A quali ty of the previous global fit of the Fayans EDF [2] has been kept for the nuclear densities\, masses of nuclei\, single-particle levels and charge r adii. Additional constraint is implemented from the upper bound of the gia nt dipole resonance energy in 208Pb. The symmetry energy slope at saturati on density L(ρ0) is calculated with the relativistic corrections taken in to account. Its values obtained for different h-2 (Fig.1) are compared to the ones derived from the extended set of restrictions. They were obtained in [3] making use of the data on nuclear masses\, results of ab initio ca lculations with N3LO\, ΔRnp values derived from PREXP-II\, CREX experimen ts\, as well as the latest data from the radii of neutron stars and regist ration of gravitational waves. As it can be seen (Fig.2)\, for newly tuned DF3-a functional\, the SNM EOS is softer than the ones obtained from the FANDF0 functional [2]\, as well as from APR [4]\, AFDMC [5]\, N2LO(D2\,E1) and N2LO(D2\,Eτ) [6] \nSupported by the grant of Russian Scientific Foun dation (RSF 21-12-00061). \n \nFig.1. Density dependence of the L(ρ) fo r symmetric nuclear matter. Calculation with the new version of the DF3-a functional for various values of the h−2 parameter. \nFig. 2. Energy p er nucleon for SNM as a function of density. Our calculation with the FaND F0[1]\, new version of the DF3-a[2] as well as for APR [4]\, AFDMC [5]\, N 2LO[6] functionals.\n\n1. S.V. Tolokonnikov\, E.E. Saperstein\, Phys. At. Nucl. 74\, 1277 (2011).\n2. S.A. Fayans\, JETP Lett. 68\, 169 (1998). \n3. J. Lattimer in "The Modern Physics of Compact Stars and Relativistic Grav ity”\, \nYrevan\, Armenia\, 2021. \n4. A. Akmal\, V. R. Pandharipande\, and D. G. Ravenhall\, Phys. Rev. C 58\, 1804 (1998).\n5. S. Gandolfi\, A. Yu. Illarionov\, K. E. Schmidt\, et.al. Phys. Rev. C 79\, 054005 (2009).\n 6. D. Lonardoni\, I. Tews\, S. Gandol_\, and J. Carlson\, arXiv:1912.09411 [nucl-th] (2019).\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3200/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3200/ END:VEVENT BEGIN:VEVENT SUMMARY:Proton Drip Line for Hypernuclei DTSTART;VALUE=DATE-TIME:20221130T154500Z DTEND;VALUE=DATE-TIME:20221130T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3194@cern.ch DESCRIPTION:Speakers: Semyon Sidorov (Lomonosov Moscow State University)\n Studies of hypernuclei with proton or neutron excess are of particular rel evance now in strangeness physics. Such systems scarcely studied experimen tally can currently be produced in heavy ion collisions at NICA complex d eveloped in DUBNA. Research in exotic hypernuclei can provide insight into various aspects of hyperonic interactions including density dependence of the ΛN interaction\, core polarization and charge symmetry breaking (CSB ). Some of these features may have a profound influence on the structure o f systems with an extreme excess of neutrons or protons\, such as halo nuc lei and neutron stars. Furthermore\, considering the attractive nature of ΛN interaction\, there is a chance to stabilize loosely bound nuclear sys tems and even get bound hypernuclei with unstable cores. Our goal was to s tudy such occurrences for proton-rich hypernuclei up to $Z=20$.\n\nWe addr ess the structure of Λ-hypernuclei in the framework of Hartree-Fock appro ach with effective potentials in the Skyrme form. This phenomenological ap proach allows us to analyze the hypernuclear properties in relation to bot h nucleon-nucleon and hyperon-nucleon components of the general baryonic i nteraction. The model is shown to reproduce the experimental hyperon bindi ng energies $B_Λ$ in light hypernuclei\, as well as predict the slower gr owth of $B_Λ$ in heavier hyperisotopes. In essence\, this signifies that the glue-like role of the Λ-hyperon decreases with increasing $A$\, and i t is more likely to bind lighter unbound nuclei with Λ. We study the prot on-rich isotopes up to calcium and draw conclusions on the possibility of the proton drip line shift due to Λ-hyperon on the hypernuclear chart in this region. We show hypernuclei $_Λ^9$C\, $_Λ^{17}$F\, $_Λ^{20}$Na and $_Λ^{20}$Mg to be the most promising candidates for hyperisotopes with u nbound nucleon cores.\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3194/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3194/ END:VEVENT BEGIN:VEVENT SUMMARY:THUNDERSTORM DISCHARGES AND GENERATION OF 14C ISOTOPE DTSTART;VALUE=DATE-TIME:20221130T153000Z DTEND;VALUE=DATE-TIME:20221130T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3198@cern.ch DESCRIPTION:Speakers: Vladimir Lyashuk (1) Institute for Nuclear Research of the Russian Academy of Science\, Moscow\, Russia (ИЯИ РАН)\, 2) N ational Research Centre "Kurchatov Institute”\, Moscow\, Russia НИЦ Курчатовский институт)\nGeneration of 14C radioisotope in the Earth atmosphere occurs by the 14N(n\,p)14C reaction under cosmoge nic fluxes and this process is considered as the main source of radiocarbo n creation with rate of accumulation is evaluated as ~ 6.6 kg per year. An exclusively opportunities of dating based on the analysis of 14C concentr ation in the very old and ancient organic samples led to the discovery of short-term secular variation of radiocarbon in tree rings [1] and to the h ypothesis of 14C generation under thunderstorms flashes. \n\nThe nature of the lightning phenomena in fact is connected with the development of elec tron avalanche in the strong atmospheric electric fields (about 300 kV/m a nd even up to 1000 kV/m) [2]. The very fast electron avalanche growth in the cloud electric fields ensures the phenomenon of terrestrial gamma-ray bursts [2\,3]. These energetic gamma-rays generate the photonuclear react ions on atmospheric isotopes (with significant yield for hard photons of e nergy Eg up to 60 MeV) as 14N(g\,n)13N\, 16O(gamma\,n)15O\, 40Ar(gamma\,n) 39Ar. \n\nAn increase of neutron flux causes the next series of (n\,gamma) \, (n\,a)\, (n\,p)-reaction and the 14N(n\,p)14C is the top important for dating problem. For evaluating of the radiocarbon generation under thunder storm conditions (and creation of another atmospheric isotopes too) it was proposed the model (realized in the spherical-layer geometry). The calcul ation were made at the several altitudes of the lower part of the atmosphe re at the altitudes from 250 m up to ~15 km (that allows to cover the poss ible heights of detected lighting) [4].\n\nDecrease of the atmospheric den sities at increase of the altitude is critical for electron avalanche evol ution and is included in the model. It was obtained the yield of C14 from thunder discharges evaluated as 0.0001 % relative to cosmogenic one. The r esults support the hypothesis that radiocarbon rise in the old tree rings (at AD 774–775) [1] can be explained by increased Sun activity of the Su n at this time interval.\n\n1. F. Miyake\, K. Nagaya\, K. Masuda\, T. Naka mura\, Nature 486\, (2012) 240. doi.org/10.1038/nature11123\n\n2. Joseph R . Dwyer · David M. Smith · Steven A. Cummer. High-Energy Atmospheric Phy sics: Terrestrial Gamma-Ray Flashes and Related Phenomena. Space Sci Rev ( 2012) 173:133–196. DOI 10.1007/s11214-012-9894-0.\n\n3. Leonid Babich\, Thunderous nuclear reactions. Nature\, v.551 (2017) 443. doi.org/10.1038/ d41586-017-07266-w\n\n4. V. I. Lyashuk\, Evaluation of Radiocarbon 14C Yie ld Under Conditions of Thunderstorms\, Geophysical Research Letters\, 48\, e2021GL095357. https://doi.org/10.1029/2021GL095357\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3198/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3198/ END:VEVENT BEGIN:VEVENT SUMMARY:Calculation of the isotope shift in neutral atoms DTSTART;VALUE=DATE-TIME:20221130T151500Z DTEND;VALUE=DATE-TIME:20221130T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3199@cern.ch DESCRIPTION:Speakers: Sergey Prosnyak (NRC «Kurchatov Institute» - PNPI\ , SPbU)\nOne of the most interesting properties of an atomic nucleus is it s root-mean-square charge radius. This quantity can be measured using seve ral different types of experiments. One of them is the observation of an i sotopic shift in atomic spectra. An important feature of this method is th e ability to determine the radii of short-lived nuclei. To find the radius from experimental data for one transition\, mass and field shift constant s turn out to be necessary. We have developed a new approach and calculate d these constants for a number of the gold atom isotopes. An important fea ture of the calculations was a detailed analysis of the theoretical uncert ainties. It was demonstrated that the use of modern methods for calculatin g the electronic structure makes it possible to achieve a high accuracy fo r the gold atom under consideration surpassing accuracy previous studies.\ nThe present calculations have been supported by the Russian Science Found ation Grant 19-72-10019.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3199/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3199/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutron resonances in the Constituent Quark Model DTSTART;VALUE=DATE-TIME:20221130T150000Z DTEND;VALUE=DATE-TIME:20221130T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3195@cern.ch DESCRIPTION:Speakers: Sergey Sukhoruchkin (PNPI NRC KI)\nMeasurements of t he neutron cross-sections of heavy nuclei and their \nanalysis at the IAE and ITEP\, carried out in the 1950s and later\, made \nit possible to find out deviations from the statistical model in the \ndistributions of posit ions and spacings of neutron resonance levels. \nThis work is a review of the analysis of the energies \nof nuclear states and the particle mass spe ctrum\, based on the \ndistinguished role of the electron\, its symmetry\, and radiative \ncorrection. \nA symmetry motivated approach to the proble m of the particle mass \nspectrum is due to the fact that the electron and nucleons add up \nto the visible mass of the Universe\, and the ratio of their masses \nis very accurately estimated in the CODATA review as \n$m_n /m_e=1838.6836605(11)$. \nThe representation of the nucleon masses in term s of the electron mass \nand the period $16m_e=\\delta$ allows checking th e same \nrepresentation in the discreteness effect in the \nenergies of nu clear states and the masses of other particles.\nThe values of the pion pa rameters $f_\\pi=130$\\\,MeV\, $m_\\pi=140$\\\,MeV \nand $\\Delta M_\\Delt a=147$\\\,MeV\, as well as the parameters of the \nConstituent Quark Model $M_q=3\\Delta M_\\Delta=441$\\\,MeV \nand $M^\\omega_q=3f_\\pi=391$\\\,Me V contain a general empirical \ndiscreteness parameter - the period $\\del ta$.\n\n1. Sukhoruchkin S.I. et al. Proc. ISINN-28. JINR E3-2021\, P. 234\ , 247\, 259. \n2. Sukhoruchkin S.I. Nucl. Part. Phys. Proc. 2021. V. 312 - 317. P. 185.\n3. Sukhoruchkin S.I. Nucl. Part. Phys. Proc. 2022. V. 318 - 323. P. 191.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3195/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3195/ END:VEVENT BEGIN:VEVENT SUMMARY:Level structure of unbound heavy helium isotopes 7\,9He DTSTART;VALUE=DATE-TIME:20221130T090000Z DTEND;VALUE=DATE-TIME:20221130T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3190@cern.ch DESCRIPTION:Speakers: Boris Chernyshev (National Research Nuclear Universi ty MEPhI)\nThe formation of the unbound heavy helium isotopes 7\,9He was s tudied in the reactions of stopped pion absorption by light nuclei. The gr ound and excited states were observed in the following channels: 9Be(pion- \,d)7He\, 11B(pion-\,pt)7He\, 10B(pion-\,pd)7He\, 11B(pion-\,pt)7He\, 10B( pion-\,dd)7He\, 12C(pion-\,p4He)7He\, 12C(pion-\,d3He)7He\, 14C(pion-\,t4H e)7He and 11B(pion-\,pp)9He\, 14C(pion-\,p4He)9He\, 14C(pion-\,d3He)9He. M easurements were carried out using two-arm multilayer semiconductor spectr ometer. The data on the level structures obtained in different reaction ch annels are consistent with each other. Comparison with theoretical and exp erimental results obtained by other authors was performed. Our results on the energies and widths of the low-lying states of the 7\,9He are consiste nt with the world data. Record values of resonance energies were obtained for highly excited states of 7He (24.5 MeV) and 9He (10.5 MeV).\n\nhttps:/ /indico.particle.mephi.ru/event/275/contributions/3190/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3190/ END:VEVENT BEGIN:VEVENT SUMMARY:Seasonal changes of the 214Po and 213Po half-life solar-daily vari ation parameters DTSTART;VALUE=DATE-TIME:20221130T084500Z DTEND;VALUE=DATE-TIME:20221130T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3186@cern.ch DESCRIPTION:Speakers: Valery Kuzminov (INR RAS)\nResults of a search for h idden patterns in the behavior of the 214Po half-life solar-daily variatio n parameters obtained in the data collected in the 2012 – 2015 years are presented. It is shown that amplitude of the sine curve approximated a ha lf-life solar-daily dependence obtained for an each season of the year by an averaging through 90 days could reach 3.3∙10-3 from the daily average d value. Similar analysis of the data collected in the 2018 – 2022 years for the 213Po showed that the amplitude of a deviation from the averaged value could reach 2.3∙10-3. This effect could limit an accuracy of preci se but short time-duration measurements of such short-lived isotopes givin g a systematic error. New value of the 213Po half-life is presented.\n\nht tps://indico.particle.mephi.ru/event/275/contributions/3186/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3186/ END:VEVENT BEGIN:VEVENT SUMMARY:Single and double charge exchange reactions in 12C fragmentation a t 300 MeV/nucleon DTSTART;VALUE=DATE-TIME:20221130T083000Z DTEND;VALUE=DATE-TIME:20221130T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3185@cern.ch DESCRIPTION:Speakers: Anna Kulikovskaya (NRC​ «Kurchatov Institute»\, Moscow\, 123182 Russia)\nThis work presents the results of single and doub le charge exchange reactions measuring in the fragmentation of carbon ions at the energy of 300 MeV/nucleon. Experimental data were collected at the FRAGM facility and the ITEP-TWAC multi-purpose accelerator complex on a t hin beryllium target [1\, 2]. The search was made for the following set of isotopes that carried out with nucleon charge exchange: 11Be\, 12B\, 12N\ , 12Be. The differential cross sections for the production of these isotop es considered as functions of the fragment momentum [3]. These measurement s of the charge exchange processes in this energy range were performed for the first Time. Additionally the upper limit of the 12N ions production w as also estimated. The obtained data are considered with a comparison of the theoretical ion-ion interaction models. These presented results expand the database on nuclear fragmentation processes that occur with nucleon c harge exchange and provide new material for testing the theoretical models . \n\n1. B.M. Abramov *et al.*\, Phys. At. Nucl. 78\, 373 (2015)\n2. B.M. Abramov *et al.*\, EPJ Web Conf. 138\, 03002 (2017)\n3. A.A. Kulikovskaya *et al.*\, Yad. Fiz. 85\, №5\, 339 (2022)\n\nhttps://indico.particle.mep hi.ru/event/275/contributions/3185/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3185/ END:VEVENT BEGIN:VEVENT SUMMARY:ANALYSIS OF SOME MODES OF COLLINEAR CLUSTER TRI-PARTITION (CCT) DTSTART;VALUE=DATE-TIME:20221130T081500Z DTEND;VALUE=DATE-TIME:20221130T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3191@cern.ch DESCRIPTION:Speakers: Yuri Pyatkov (MEPhI)\nIn our previous publications [ 1–4] we discussed various manifestations of a new decay channel of the l ow excited heavy nuclei called collinear cluster tri-partition (CCT). In t he frame of the essentially modified experimental method\, additional line ar structures corresponding to the relations M1 + M2 = const and M1 – M2 = const for the masses M1 and M2 of the fission fragments (FFs) from 252C f(sf) detected in the opposite spectrometer arms form the rhombic-like con figurations with the vertices corresponding to the magic nuclei. The struc tures are statistically reliable\, they are conditioned by a pronounced an d complex correlation between the masses of the FFs measured independently . Possible physical scenario standing behind the structures are discussed. \n\n1. Yu.V. Pyatkov et al.\, Eur. Phys. J. A. 45\, 29 (2010).\n2. Yu.V. P yatkov et al.\, Eur. Phys. J. A. 48\, 94 (2012).\n3. Yu.V. Pyatkov et al.\ , Phys. Rev. C. 96\, 064606 (2017). \n4. Yu.V. Pyatkov et al.\, Eurasian J ournal of Physics and Functional Materials\, 4\, 13 (2020).\n\nhttps://ind ico.particle.mephi.ru/event/275/contributions/3191/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3191/ END:VEVENT BEGIN:VEVENT SUMMARY:Size isomers at threshold states DTSTART;VALUE=DATE-TIME:20221130T080000Z DTEND;VALUE=DATE-TIME:20221130T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3187@cern.ch DESCRIPTION:Speakers: Alla Demyanova (NRC Kurchatov Institute\, 1\, Akadem ika Kurchatova pl.\, Moscow\, 123182\, Russia)\nThe size of a nucleus defi ned by the radius of its nucleon (proton and neutron) density distribution and the proton charge distribution is one of the most fundamental and imp ortant nuclear characteristics. Nuclear radius determines the basic proper ties of nuclei and is a consequence of the fundamental features of the str ong interaction.\nThe development of methods of measuring the radii of nuc lei in their short-lived excited states led to discovery of new classes of states\, which were named “the size isomers”.\nUp to now two groups o f the size isomers were identified: the excited states with halos ($^{9}$B e\, $^{11}$Be\, $^{13}$C\, $^{13}$N) and some specific alpha cluster state s ($^{11}$B\, $^{12}$C\, $^{13}$C). All the observed states are diluted\, however\, some indication to possible existence of more compact than the g round states was obtained as well (in $^{13}$C).\nThe phenomenon of size i somerism occurred to be not a rare one especially if one takes into accoun t that rotational bands are based on some of such states. The structure of size isomers is related with some new features\, e.g.\, rotating halos\, halos in continuum\, different types of quasimolecular configurations. Som e rudimentary signs of alpha particle condensation (a “ghost“of conden sate) were observed (in the Hoyle state of $^{12}$C)\, however\, one canno t speak about confirmation of this ambitious theory. Analogs to the Hoyle state are expected in $^{11}$B\, $^{13}$C\, $^{16}$O\, $^{20}$Ne near the $\\alpha$-emission thresholds are considered.\n\nhttps://indico.particle.m ephi.ru/event/275/contributions/3187/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3187/ END:VEVENT BEGIN:VEVENT SUMMARY:Near-inflection point inflation and production of dark matter duri ng reheating. DTSTART;VALUE=DATE-TIME:20221202T162000Z DTEND;VALUE=DATE-TIME:20221202T163500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3184@cern.ch DESCRIPTION:Speakers: Shiladitya Porey (Department of Physics\, Novosibirs k State University\, Pirogova 2\, 630090 Novosibirsk\, Russia)\nWe study s low roll single field inflationary scenario and the production of non-ther mal fermionic dark matter\, together with standard model Higgs\, during re heating. For the inflationary scenario\, we have considered two models of polynomial potential — one is symmetric about the origin and the other o ne is not. We fix the coefficients of the potential from the current CMB d ata from PLANCK/BICEP. Next\, we explore the allowed parameter space of th e coupling (y_χ) with inflaton and mass (m_χ) of dark matter particles ( χ) produced during reheating and satisfying CMB and several other cosmolo gical constraints.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3184/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3184/ END:VEVENT BEGIN:VEVENT SUMMARY:Potential gravitational lensing on a CMB cosmic string candidate DTSTART;VALUE=DATE-TIME:20221202T160500Z DTEND;VALUE=DATE-TIME:20221202T162000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3182@cern.ch DESCRIPTION:Speakers: Igor Bulygin (Sternberg Astronomical Institute of Lo monosov Moscow State University)\nThe theory of gravitational lensing on s traight segments of a single cosmic string (CS) located perpendicular to t he line of sight has been studied recently in detail. However\, more reali stic models necessarily have to include the inclinations and bends of the string. Besides\, the recent analysis of observational data on the search for gravitational-lens candidates shows a large number of pairs that could be explained by the complex geometry of the string. We describe here a wa y to threat both inclination and bending to perform image analysis and con strain the parameters of CS candidates. In this talk we also discuss the r esults\nobtained from observations of a galaxy pair SDSSJ110429. This pair is the brightest in the statistically significant chain of possible gravi tational lens images situated along the expected location of the CSc-1 – the CMB CS candidate. We\nhave obtained high-quality spectra of each comp onent of a pair. We fitted the image by a model of both bended and incline d string and performed the statistical analysis of spectrum to confirm the lensing hypothesis. The hypothesis of interacting galaxies is also consid ered.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3182/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3182/ END:VEVENT BEGIN:VEVENT SUMMARY:Gravitational waves from the merger of two primordial black hole c lusters DTSTART;VALUE=DATE-TIME:20221202T155000Z DTEND;VALUE=DATE-TIME:20221202T160500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3183@cern.ch DESCRIPTION:Speakers: Yury Eroshenko (INR RAS)\nThe orbital evolution of a binary system consisting of two clusters of primordial black holes is inv estigated. The formation of such clusters is predicted in some theoretical models. A cluster consists of the most massive central black hole surroun ded by smaller black holes. Similarly to single primordial black holes\, c lusters can form bounded pairs and merge during the orbital evolution. The replacement of single black holes by the clusters significantly changes t he entire process and the resulting gravitational wave signal. A new facto r is the tidal gravitational interaction of the clusters. It leads to an a dditional dissipation of the cluster orbital energy\, which is transferred into the internal energy of the clusters. As a result\, the time of clust er merger can be significantly shorter than the merger time of two black h oles under the influence of gravitational radiation alone. Comparison with the gravitational-wave observational data allows one to give a constraint s on the amount of primordial black holes in clusters.\n\nhttps://indico.p article.mephi.ru/event/275/contributions/3183/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3183/ END:VEVENT BEGIN:VEVENT SUMMARY:Gravitational baryogenesis: problems and possible resolution DTSTART;VALUE=DATE-TIME:20221202T152000Z DTEND;VALUE=DATE-TIME:20221202T153500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3181@cern.ch DESCRIPTION:Speakers: Elena Arbuzova (Dubna State University and Novosibir sk State University)\nWe have shown that the mechanism of gravitational ba ryogenesis leads to a strong instability of the curvature scalar\, resulti ng in its boundless exponential rise. This instability appears because the coupling of the curvature to baryonic current leads to the fourth order differential equation of motion for the curvature scalar\, instead of the algebraic one in the conventional General Relativity. However\, the modi fication of gravity due to a non-linear curvature dependent term in the cl assical Hilbert-Einstein action allows to stabilize this rise.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3181/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3181/ END:VEVENT BEGIN:VEVENT SUMMARY:Nuclear decay oscillations as possible emergent gravity effect DTSTART;VALUE=DATE-TIME:20221202T153500Z DTEND;VALUE=DATE-TIME:20221202T155000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3180@cern.ch DESCRIPTION:Speakers: Sergey Mayburov (Lebedev inst. of Physics)\nRecently \, several experiments reported small violations of radioactivity law in a lpha- and beta-decay of heavy nuclei [1\,2]. Beside standard exponential time dependence of nuclei decay rate\, they found additional periodic t erms of the order .05% corresponding to annual and daily nucleus life-ti me oscillations. It supposes that decay parameter variation can be related to temporary variation of Sun gravitation potential U in lab.\, result ing from elliptic form of Earth orbit and its daily rotation [1]. We argu e that such effects can be explained \nby nonlinear interaction of quantu m systems with gravity proposed by Kibble [3\,4]. It\ncorresponds also t o some emergent gravity theories\, in which gravity induced by scalar bil ocal field Φ [4\,5 ]. Φ interaction with bilocal nucleus operators described by Doebner- Godin nonlinear formalism [6] can significantly in fluence nucleus decay life-time [7]. For Gamow alpha-decay model\, such nonlinear terms induce nucleus life-time variations\, which agree wit h experimental results for Po-214 alpha-decay [7]. \n \n1. E. Fischbac h et al. \, Rev. Space Sci. 145\, 285 (2009)\; Astrop. Phys. 59\,47 (2014) \n\n2. E. Alekseev et al. \, Phys. Part. Nucl. 47\, 1803 (2016)\, ibid.. 49\, 557 (2018) \n\n3. T.W.B. Kibble\, Commun. Math. Phys. 64\, 73 (1978 )\n\n4. P. Diaz\, S. Das and M. Walton\, Int. J. Mod. Phys. D27\, 1850090 (2017) \n\n5. S.Das and A.Jevicki\, Phys. Rev. D68\, 044011 (2003)\n\n6 . H. Doebner and G. Goldin\, Phys. Rev. A 54\, 3764 (1996)\n\n7. S.May burov\, Int. J. Theor. Phys. 60\, 630 (2021)\n\nhttps://indico.particle. mephi.ru/event/275/contributions/3180/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3180/ END:VEVENT BEGIN:VEVENT SUMMARY:Production of baryon asymmetry and relic gravitational waves by ra ndom hypermagnetic fields DTSTART;VALUE=DATE-TIME:20221202T150500Z DTEND;VALUE=DATE-TIME:20221202T152000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3179@cern.ch DESCRIPTION:Speakers: Maxim Dvornikov (Institute of Terrestrial Magnetism\ , Ionosphere and Radiowave Propagation (IZMIRAN))\nWe study the generation of the baryon asymmetry of the universe (BAU) and relic gravitational wav es (GWs) in turbulent hypermagnetic fields (HMFs) in the symmetric phase o f the early universe before the electroweak phase transition (EWPT). The n oise of HMFs is modeled by the analog of the magnetic hydrodynamics turbul ence. The evolution of HMFs is driven the analogs the chiral magnetic effe ct and the Adler anomalies in the presence of the nonzero asymmetries of l eptons and Higgs bosons. We track the evolution of BAU and the energy dens ity of GWs from T = 10 TeV down to EWPT and analyze their dependence on th e parameters of the system. We also discuss the possibility to observe the predicted GW background by the current GW detectors.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3179/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3179/ END:VEVENT BEGIN:VEVENT SUMMARY:A new vacuum state for quantum fields in curved spacetime and its application to cosmology DTSTART;VALUE=DATE-TIME:20221202T144500Z DTEND;VALUE=DATE-TIME:20221202T150500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3178@cern.ch DESCRIPTION:Speakers: Nelson Pinto-Neto (Brazilian Center for Physics Rese arch)\nIn this talk I will present a new method to define a vacuum state f or fields in curved spacetimes\, which encompasses the adiabatic prescript ion. New vacuum states can emerge in situations where the adiabatic method is impossible. Its application is immediate. As it is well known\, cosmol ogical observations suggest that the structures in the Universe arise from quantum fluctuations of an adiabatic vacuum of quantum cosmological pertu rbations\, either at the onset of inflation\, or in the far past of the co ntracting phase of bouncing models. However\, in many situations\, the pre sence of a cosmological constant destroys the adiabatic conditions. The ne w method is successfully applied to this case\, and the stability of the n ew vacuum suggests a deep connection between dark matter and dark energy.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3178/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3178/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of there-body recombination on formation of dark atoms DTSTART;VALUE=DATE-TIME:20221202T094500Z DTEND;VALUE=DATE-TIME:20221202T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3176@cern.ch DESCRIPTION:Speakers: Dmitry Kalashnikov (NRNU MEPhI)\nNowadays dark matte r models with thier own dark interaction becoming more popular. They solve a number of problems of cold dark matter model ($\\Lambda$CDM). The simpl est viable model of self-interacting dark matter (SIDM) is a model with da rk Coulomb-like interaction (with dark photon “***y***” as carrier) an d a set of two types of particles: dark electron ($e_y$) and dark proton ( $p_y$). In present work\, the concentration of relict (residual) neutral d ark atoms was estimated due to three-body recombination ($p^+_y+e^-_y+e^-_ y\\\,\\rightarrow\\\, H_y+e^-_y+Y$).\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3176/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3176/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of soliton foam formation in early Universe DTSTART;VALUE=DATE-TIME:20221202T093000Z DTEND;VALUE=DATE-TIME:20221202T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3173@cern.ch DESCRIPTION:Speakers: Boris Murygin (NRNU MEPhI)\nThe formation of soliton s foam in the early Universe in the model with two real scalar fields and potential having at least one saddle point and a local maximum is consider ed. The initial fields distribution is obtained by quantum fluctuations si mulation in the framework of Starobinsky's inflation. The formation and ev olution of domain walls bounded by strings and solitons foam are discussed in the numerical simulation in (3+1)-space-time. The possibility of PBHs formation in the model is also considereded.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3173/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3173/ END:VEVENT BEGIN:VEVENT SUMMARY:Null cosmic strins as sources of gravitational bursts DTSTART;VALUE=DATE-TIME:20221202T091500Z DTEND;VALUE=DATE-TIME:20221202T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3171@cern.ch DESCRIPTION:Speakers: Evgeny Davydov (JINR)\nAlong with the more well-know n massive cosmic strings\, their massless counterparts can also exist in t he universe. Such strings\, having no tension\, have a linear energy densi ty and therefore can contribute to the gravitational wave background\, gen erating gravitational bursts of various durations. We are investigating tw o different mechanisms for the generation of these gravitational bursts. \ n\nUsing the previously introduced stress-energy tensor for the null strin g [1]\, we can\, in linear approximation\, establish a connection between the gravitational shockwave from a massless particle (Aichelburg-Sexl solu tion) and the gravitational burst from a null string of arbitrary time-dep endent shape. At the same time\, the null string can also be considered as a moving topological defect in space-time\, which changes the gravitation al field of other massive bodies. From the point of view of distant observ ers\, the dynamic change in the gravitational field induced by the string can also look like a gravitational burst of some duration. \n\nIn the gene ral case\, one can expect that gravitational bursts from null strings can be experimentally detected due to the gravitational memory effect. We will discuss the characteristic parameters of bursts and the corresponding mem ory for some model problems and the theoretical possibilities of their det ection in gravitational wave experiments.\n\n[1] E.A. Davydov\, D.V. Fursa ev\, V.A. Tainov\, Phys.Rev.D 105 (2022) 8\, 083510. e-Print: 2203.02673 [ gr-qc].\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3171/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3171/ END:VEVENT BEGIN:VEVENT SUMMARY:Copernican Principle Beyond the FLRW Universe DTSTART;VALUE=DATE-TIME:20221202T090000Z DTEND;VALUE=DATE-TIME:20221202T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3177@cern.ch DESCRIPTION:Speakers: Ranjini Mondol ()\nWe present the dipole cosmologica l principle\, the notion that the Universe is a Copernican cosmology agree ing with a cosmic flow. It suits the most symmetric paradigm that generali zes the FLRW ansatz in the context of numerous suggestions that have appea red in the literature for a non-kinematic component in the Cosmic Microwav e Background dipole. Field equations in our "dipole cosmology" are still O DEs\, but we now have four instead of the two Friedmann equations. The two extra functions can be regarded as an additional scale factor that breaks the isotropy group from SO(3) to U(1) and a "tilt" that denotes the cosmi c flow. The result is an axially isotropic universe. We examined the dynam ics of expansion rate\, anisotropic shear\, and tilt for some cases. An im portant observation is that the cosmic flow (tilt) can grow while the anis otropy (shear) dies down.\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3177/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3177/ END:VEVENT BEGIN:VEVENT SUMMARY:Formation of primordial black hole clusters in early dark matter h alos DTSTART;VALUE=DATE-TIME:20221202T084500Z DTEND;VALUE=DATE-TIME:20221202T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3175@cern.ch DESCRIPTION:Speakers: Viktor Stasenko ()\nThe Poisson fluctuations in the primordial black holes (PBHs) number density lead to the formation of more massive dark matter (DM) halos at high redshifts\, compared to the predic tions of standard cold dark matter cosmology. In particular\, this work co nsiders the case where the fraction of dark matter $f_{PBH} = 0.1$ is pres ented in the form of PBHs with mass $m = 10 \\\, M_{\\odot}$ and it is sho wn that halos of mass $M_h \\sim 10^5 \\\, M_{\\odot}$ are actively formed at a redshift $z \\sim 20$. The further evolution of such a halo is of gr eat interest: PBHs actively interact both with each other and with DM part icles in such a halo\, as a result of which density of PBHs at the centers of such structures significant increases\, that eventually leads to the f ormation of a dense cluster of PBHs. The potential effect of these dynamic effects on the black holes merger rate and the abundance of such clusters in the modern era is also discussed.\n\nhttps://indico.particle.mephi.ru/ event/275/contributions/3175/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3175/ END:VEVENT BEGIN:VEVENT SUMMARY:Constraints on primordial black holes from interstellar dust tempe rature DTSTART;VALUE=DATE-TIME:20221202T083000Z DTEND;VALUE=DATE-TIME:20221202T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3172@cern.ch DESCRIPTION:Speakers: Aleksandr Melikhov (Astro-Space Center of the P.N. L ebedev Physical Institute)\nInterest in primordial black holes (PBHs) has strongly increased after the recent LIGO detection of gravitational waves from merging black holes. It is especially interesting that the intrinsic rotational momentum of these black holes is close to zero\, which is diffi cult to explain for astrophysical black holes\, but turns out to be quite logical for PBHs. Also\, it is interesting that masses of merging black ho les have appeared much more than masses of black holes obtained from other observational data. In addition\, the question as to what is the dark mat ter is still unresolved. It is also worth noting that the cosmological pro perties of PBHs are similar to those of cold dark matter. Therefore\, PBHs can be considered as a candidate for the role of dark matter.\n\nIn this paper we calculate constraints on PBHs for different distributions of PMHs with masses $10^{15}$ -- $10^{17}$ g\, with photons emitted by these PBHs due to the Hawking effect interacting with interstellar dust. We consider a model in which PBHs are homogeneously distributed in the Universe and t he dust particles are homogeneously distributed in our Galaxy. This method of finding constraints on PBHs has been proposed for the first time and h as not been considered before.\n\nA photon emitted by a PBH is absorbed by a dust particle and drives the dust particles in a thermal motion. The du st particle absorbs photons with energies at all wavelengths\, heats up an d begins to emit in a continuous spectrum\, which can be approximated by t he Planck spectrum. The equilibrium dust temperature $T_d$ for the graphit e and silicate components is determined from the heat balance condition. R adiation from other sources is not taken into account when calculating the dust heating rate. As a model of interstellar dust the MRN model was chos en\, according to which the interstellar dust particles have a spherical s hape and consist of a mixture of silicate and graphite particles in approx imately equal mass proportions. The particle sizes are $0.005 \n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3172/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3172/ END:VEVENT BEGIN:VEVENT SUMMARY:Noether symmetrical gravity Lagrangian as a fourth order polynomia l in Ricci and Gauss-Bonnet scalars not involving a cosmological constant or dark matter DTSTART;VALUE=DATE-TIME:20221202T081500Z DTEND;VALUE=DATE-TIME:20221202T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3174@cern.ch DESCRIPTION:Speakers: Yury Pokrovsky (National Research Center “Kurchato v Institute”)\nAn extension of the action of the General Relativity in a form of Noether symmetrical fourth order polynomial in the Riemann curvat ure tensor is suggested and discussed as a possible fundamental theory of gravity in 4-dimensional space-time in direct analogy with the standard fu ndamental theory of the particle physics with the Lagrangian being polynom ial in fundamental fields as well. The geometrical part of the suggested g ravity Lagrangian is derived to be $L=(1/2k)R(1+G/Gp)+G^2/(GpHi^4)$. Here R is the Ricci scalar\, G - the Gauss-Bonnet topological invariant\, $k=8\ \pi GN/c^4$ is the Einstein constant\, c - the speed of light\, GN - the N ewton constant of gravitational attraction\, Gp – a new constant of the gravitational repulsion which is indicated by the observed late-time accel erated expansion of the Universe\, and Hi is a constant introduced in resp ect with the cosmological inflation at the initial stage of Universe evolu tion. In this theory there is no need for contributions of the very proble matic dark energy (cosmological constant) or dark matter. The best fit to the SN Ia supernova data for the luminosity distances with respective red shifts (z) or to data for the baryon acoustic oscillations makes possible to estimate values of the Hubble constant H0\, deceleration constant q0 an d the values of two parameters of this gravity Lagrangian: Gp\, and Hi. In addition\, the mean square weighted deviation from these data for the sug gested theory of gravity is found to be about 3 times smaller than for the standard cosmological ($\\Lambda$CDM) model. Some predictions made by thi s theory of gravity for a possible evolution of the Universe are also disc ussed.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3174/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3174/ END:VEVENT BEGIN:VEVENT SUMMARY:Compact extra dimensions as the source of primordial black holes DTSTART;VALUE=DATE-TIME:20221130T164500Z DTEND;VALUE=DATE-TIME:20221130T170000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3166@cern.ch DESCRIPTION:Speakers: Valery Nikulin (MEPhI)\nWe demonstrate the possibili ty of purely gravitational production of primordial black holes in multidi mensional $f(R)$-gravity. Our model is based on a compact extra space whos e size is stabilized by quadratic corrections to the Ricci scalar in multi dimensional Lagrangian. Such a Lagrangian gives rise to a low-energy model containing an effective scalar field capable for the domain walls product ion. Formed during inflation\, these domain walls are dense enough so they collapse into primordial black holes soon after inflation ends. The propo sed mechanism for the formation of primordial black holes does not require any matter fields.\n\nhttps://indico.particle.mephi.ru/event/275/contribu tions/3166/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3166/ END:VEVENT BEGIN:VEVENT SUMMARY:On quasinormal modes in 4D black hole solutions in the model with anisotropic fluid DTSTART;VALUE=DATE-TIME:20221130T163000Z DTEND;VALUE=DATE-TIME:20221130T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3163@cern.ch DESCRIPTION:Speakers: Vladimir Ivashchuk (Center for Gravitation\, VNIIMS) \nWe consider a family of 4-dimensional black hole solutions \ngoverned b y natural number $q= 1\, 2\, 3 \, \\dots$\, which appear in the model\nw ith anisotropic fluid and the equations of state: $p_r = -\\rho (2q-1)^ {-1}$\, \n$p_t = - p_r$\, where $p_r$ and $p_t$ are pressures in radia l and transverse \ndirections\, respectively\, and $\\rho > 0$ is the de nsity. These equations of state obey weak\, strong and dominant energy co nditions. For $q = 1$ the metric of the solution coincides with that of the Reissner-Nordstr\\"om one. The global structure of solutions is o utlined\, giving rise to Carter-Penrose diagram of Reissner-Nordstr\\"om or Schwarzschild types for odd $q = 2k + 1$ or even $q = 2k$\, respectivel y. Certain physical parameters corresponding to BH solutions \n(gravitatio nal mass\, PPN parameters\, Hawking temperature and entropy)\nare calculat ed. We obtain and analyse the quasinormal modes for a test massless scal ar field in the eikonal approximation. For limiting case $q = + \\infty$\ , they coincide with the well-known results for the Schwarzschild solution . We show that the Hod conjecture which connect the Hawking temperature and the damping rate is obeyed for all $q \\geq 2$ and all (allowed) val ues of parameters.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3163/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3163/ END:VEVENT BEGIN:VEVENT SUMMARY:Tidal disruption of stars by supermassive black holes and naked si ngularities with scalar hair DTSTART;VALUE=DATE-TIME:20221130T161500Z DTEND;VALUE=DATE-TIME:20221130T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3165@cern.ch DESCRIPTION:Speakers: Alexander Tsirulev (Tver State University)\nIn the l ast two decades\, a number of observed flares in inactive galaxies have be en associated with the tidal disruption of stars by strongly gravitating o bjects located in the centers of galaxies. Tidal disruption events provide us with a new channel for exploring the central compact objects. In this report\, we compare tidal forces and some features of tidal disruption in the vicinities of supermassive black holes and naked singularities surroun ded by dark matter. These objects are considered in an idealized static Ei nstein-Klein-Gordon model consisting of a pointlike massive body in the ce nter of spherically symmetric\, asymptotically flat configuration of a sel f-gravitating scalar field. Varying the mass and the scalar field distribu tion (or\, equivalently\, the nonlinear self-interaction potential)\, we c an obtain any physically reasonable radial density distribution of dark ma tter. It turns out that the tidal effects for vacuum black holes and black holes with scalar hair are differ essentially from those for naked singul arities with scalar hair.\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3165/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3165/ END:VEVENT BEGIN:VEVENT SUMMARY:The spectrum of quantum states of BTZ black hole formed by a colla psing dust shell. DTSTART;VALUE=DATE-TIME:20221130T160000Z DTEND;VALUE=DATE-TIME:20221130T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3167@cern.ch DESCRIPTION:Speakers: Artem Starodubtsev (St. Petersburg state university) \, aleksandr Andrianov (Sankt-Peterburg State University)\nWe perform cano nical analysis of an action in which 2+1-dimensional gravity with negative cosmological constant is coupled to \ncylindrically symmetric dust shell. The resulting phase space is finite dimensional having geometry of SO(2\, 2) group manifold.\nReplacing the Poisson brackets by commutators results in the algebra of observables which is a quantum double D(SL(2)_q).\nDefor mation parameter q is real when the total energy of the system is below th e threshold of a black hole formation\, and a root of\nunity when it is ab ove. Inside the black hole the spectra of the shell radius and time operat or are discrerte and take on a \nfinite set of values. Transition amplitud es between these states are everywhere finite\, including the central sing ularity.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3167/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3167/ END:VEVENT BEGIN:VEVENT SUMMARY:Nonstationary configurations of a spherically symmetric massless s calar field DTSTART;VALUE=DATE-TIME:20221130T154500Z DTEND;VALUE=DATE-TIME:20221130T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3168@cern.ch DESCRIPTION:Speakers: Julia Tchemarina (Tver State University)\nNonstation ary configurations of a massless spherically symmetric scalar field are co nsidered. We use an approach to the construction of nonstationary gravitat ing configurations of a scalar field\, which makes it possible to reduce t he Einstein-scalar field system to a single equation written in invariant quantities. New exact and numerical nonstationary solutions for a massless scalar field are obtained. These solutions are associated with characteri stic functions of a special form. It is shown that there are no asymptotic ally flat solutions for the considered classes of characteristic functions .\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3168/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3168/ END:VEVENT BEGIN:VEVENT SUMMARY:Wormholes in a Friedmann Universe DTSTART;VALUE=DATE-TIME:20221130T153000Z DTEND;VALUE=DATE-TIME:20221130T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3164@cern.ch DESCRIPTION:Speakers: Kirill Bronnikov ()\nWe consider the generalized Tol man solution of general relativity\, describing the evolution of a spheric al dust cloud in the presence of an external electric or magnetic field. I n such models\, we study the possible existence of wormhole throats define d as spheres of minimum radius at a fixed time instant\, and prove the exi stence of throats in the elliptic branch under certain conditions imposed on the arbitrary functions that are present in the solution. It is further shown that \nsuch dust clouds with throats can be inscribed into closed i sotropic cosmological models filled with dust to form wormholes which exis t for a finite period of time and experience expansion and contraction tog ether with the corresponding cosmology. Explicit examples and numerical es timates are presented.\n\nhttps://indico.particle.mephi.ru/event/275/contr ibutions/3164/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3164/ END:VEVENT BEGIN:VEVENT SUMMARY:Defining spins of supermassive black holes M87* and SgrA* from the form of dark spots at their EHT images DTSTART;VALUE=DATE-TIME:20221130T151500Z DTEND;VALUE=DATE-TIME:20221130T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3169@cern.ch DESCRIPTION:Speakers: Vyacheslav Dokuchaev (Institute for Nuclear Research of the Russian Academy of Sciences)\nWe use the sizes of dark spots at th e EHT images of supermassive black holes M87* and SgrA* for inferring thei r spins\, a>0.75 and a=0.65-0.9\, respectively. It is supposed that black spots at the EHH images of M87* and SgrA* are the lensed images of their e vent horizon globes. We reconstruct the form of lensed event horizon by us ing numerical calculations of the photon trajectories in the Kerr metric. Bright rings embracing the dark spots at the EHH images of M87* and SgrA*\ , seemingly\, related with the very luminous accreting matter. These accre ting matter\, as by product\, illuminates the event horizon outskirts prov iding the dark spots at the black hole images. The lensed images of event horizons (related with photons emitted to the distant observer inside the photon spheres) are always projected at the celestial sphere inside the aw aited position of the classical black hole shadows\, which are invisible i n both cases of M87* and SgrA*.\n\nhttps://indico.particle.mephi.ru/event/ 275/contributions/3169/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3169/ END:VEVENT BEGIN:VEVENT SUMMARY:Shadows near supermassive black holes: from a theoretical concept to GR test DTSTART;VALUE=DATE-TIME:20221130T150000Z DTEND;VALUE=DATE-TIME:20221130T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3170@cern.ch DESCRIPTION:Speakers: Alexander Zakharov ()\nDue to an expected progress o f observational facilities Zakharov et al. (2005a) proposed to use global and ground – space VLBI observations in mm band to detect a shadow at S gr A$^*$ as a tool to evaluate a black hole spin and a position angle of d istant observer. In particular\, it was predicted that the shadow diameter is around 52 μas for the Sgr A$^*$ case and this prediction was remarka bly confirmed by the Event Horizon Telescope (EHT) Collaboration on 12 Ma y 2022. Also Zakharov et al. (2005b) showed that a black hole charge can be evaluated from shadow size estimates. Zakharov (2014) generalized these relations for the tidal charge case. In 2019 the EHT Collaboration recons tructed shadows at M87$^*$ in 2019 and at Sgr A$^*$ in 2022. As it was sho wn by Zakharov (2022) a black hole charge can be found analytically from t hese observations.\n\nReferences\n\nZakharov A. F. et al.\, New Astronomy 10\, 479 (2005a)\n\nZakharov A. F. et al.\, A & A 442\, 795 (2005b)\n\n Zakharov A. F. \, PRD 90\, 062007 (2014)\n\nZakharov A. F. \, Univers e 8\, 141 (2022)\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3170/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3170/ END:VEVENT BEGIN:VEVENT SUMMARY:Integrable F(R) gravity cosmological models with an additional sca lar field DTSTART;VALUE=DATE-TIME:20221130T094500Z DTEND;VALUE=DATE-TIME:20221130T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3158@cern.ch DESCRIPTION:Speakers: Vsevolod Ivanov ()\nWe consider modified gravity cos mological models that can be transformed into two-field chiral cosmologica l models by the conformal metric transformation. For the $R^2$ gravity mod el with an additional scalar field and the corresponding two-field model w ith the cosmological constant and nonstandard kinetic part of the action\, the general solutions have been obtained in the spatially flat FLRW metri c. We analyze the correspondence of the cosmic time solutions obtained and different possible evolutions of the Hubble parameters in the Einstein an d Jordan frames.\n\nThis talk is based on the paper [1].\n\n[1] Vsevolod R . Ivanov and Sergey Yu Vernov. Integrable modified gravity cosmological mo dels with an additional scalar field. European Physical Journal C\, 81(11) :985\, 2021.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3 158/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3158/ END:VEVENT BEGIN:VEVENT SUMMARY:Two-step Multiverse production DTSTART;VALUE=DATE-TIME:20221130T093000Z DTEND;VALUE=DATE-TIME:20221130T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3160@cern.ch DESCRIPTION:Speakers: Sergey Rubin ()\nWe discuss evolution of 4-dim manif old endowed by 2-dim compact extra dimensions The first step is finished by de-Sitter stage at high energies. The quantum fluctuations destroy init ial symmetry of extra space metric producing a wide range\nof the initial extra metrics in causally disconnected regions (pocket universes) of the M ultiverse during the second step. This set of different\nextra metrics evo lves to a final set. The symmetry and form of each final\nextra metric is specific for each pocket universe. The low energy physics\nappears to be d ifferent in different pocket universes. The numerical esti-\nmation of the probability of finding a specific metric is based on the model\nof compac t 2-dimensional extra space\n\nhttps://indico.particle.mephi.ru/event/275/ contributions/3160/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3160/ END:VEVENT BEGIN:VEVENT SUMMARY:Notes to Modernization of the Standard Model DTSTART;VALUE=DATE-TIME:20221130T091500Z DTEND;VALUE=DATE-TIME:20221130T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3162@cern.ch DESCRIPTION:Speakers: Vladimir Burdyuzha (leading scientific worker )\nPro bably\, physics of particles must consist of two parts. Low energy -standa rd model. High energy > $\\ 10^{5}$ GeV - the early Universe.The first ste p to modernization of Standard model is insertion of quarks with electric charges q=$-\\frac{2}{3}$ and q=$\\frac {1}{3}$ in its high energy part. During baryon genesis has deternined the quark composition of protons and neutrons.Baryon genesis was realized on energies $\\sim 10^{2}$ -$\\ 10^{3 }$ GeV fixed baryon asymmetry after decay of the competition reaction. Bes ides\, the composite model of elementary particles is more acceptable with cosmological point of view because of its consequences are printed in bar yon large scale structure of the Universe.\n\nhttps://indico.particle.meph i.ru/event/275/contributions/3162/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3162/ END:VEVENT BEGIN:VEVENT SUMMARY:Inflationary models with Gauss-Bonnet term DTSTART;VALUE=DATE-TIME:20221130T090000Z DTEND;VALUE=DATE-TIME:20221130T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3161@cern.ch DESCRIPTION:Speakers: Ekaterina Pozdeeva ()\nWe consider $f(R)$ gravity mo del with an additional function of the Gauss-Bonnet term.\nWe analyze the model in slow-roll regime and estimate inflationary parameters using obser vational\ndata to restrict parameters including to the function of the Gau ss-Bonnet term.\n\nhttps://indico.particle.mephi.ru/event/275/contribution s/3161/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3161/ END:VEVENT BEGIN:VEVENT SUMMARY:Compactification scenario in Gauss-Bonnet gravity DTSTART;VALUE=DATE-TIME:20221130T084500Z DTEND;VALUE=DATE-TIME:20221130T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3159@cern.ch DESCRIPTION:Speakers: Alexey Toporensky (Sternberg Astronomical Institute\ , Moscow)\nA successful compactification scenario should explain two\, in principle\, rather different properties of the multidimensional space-time . First\, we need to show why the evolution of three big dimension is diff erent from the evolution of other dimensions. Second\, we need to explain why the 3-dimension subspace is almost isotropic one. We present a scenari o which address both issures. Starting from rather general totally anisotr opic initial condition the evolution of a Universe naturally leads to a pr oduct of two isotropic subspaces. This presentation is a brief summary of a set of papers made in collaboration with A.Giakomini\, S.Pavluchenko and D. Chirkov.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3 159/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3159/ END:VEVENT BEGIN:VEVENT SUMMARY:Weyl Geometry\, Perfect Fluid and Induced Gravity DTSTART;VALUE=DATE-TIME:20221130T080000Z DTEND;VALUE=DATE-TIME:20221130T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3157@cern.ch DESCRIPTION:Speakers: Victor Berezin (Institute for Nuclear Research\, Rus sian Academy of Sciences)\nA short introduction to Weyl geometry and Weyl gravity is given. The self-consistency relation for the variation of the g eneral form of the matter action integral to be conformal invariant is obt ained. It is shown that the particle production rate per unit coordinate v olume per unit coordinate time is conformal invariant. It is noticed that such a feature allows us to consider the perfect fluid action as an exampl e of the Sakharov’s induced gravity model.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3157/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3157/ END:VEVENT BEGIN:VEVENT SUMMARY:The semiclassical limit of quantum gravity and the problem of time DTSTART;VALUE=DATE-TIME:20221130T083000Z DTEND;VALUE=DATE-TIME:20221130T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3156@cern.ch DESCRIPTION:Speakers: Tatyana Shestakova (Department of Theoretical and Co mputational Physics\, Southern Federal University)\nThe question about the appearance of time in the semiclassical limit of quantum gravity continue s to be discussed in the literature. It is believed that a temporal Schrö dinger equation for matter fields on the background of a classical gravita tional field must be true. To obtain this equation\, the Born – Oppenhei mer approximation for gravity is used. However\, the origin of time in thi s equation is different in works of various authors. For example\, in the papers of Kiefer and his collaborators\, time is a parameter along a class ical trajectory of gravitational field\; in the works of Montani and his c ollaborators the origin of time is introducing the Kuchař – Torre refer ence fluid\; in the extended phase space approach the origin of time is th e consequence of existing of the observer in a fixed reference frame. We d iscuss and compare these approaches. However\, none of the approaches can explain how time had appeared in the Early Universe\, since it is supposed that classical gravity and\, therefore\, classical spacetime had already come into being.\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3156/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3156/ END:VEVENT BEGIN:VEVENT SUMMARY:Tidal properties of D-dimensional Tangherlini spacetime DTSTART;VALUE=DATE-TIME:20221130T081500Z DTEND;VALUE=DATE-TIME:20221130T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3155@cern.ch DESCRIPTION:Speakers: Vyacheslav Vandeev (Petersburg Nuclear Physics Insti tute named by B.P.Konstantinov of NRC «Kurchatov Institute»)\nThe geodes ic deviation equation \n$\\frac{D^2\\xi^{\\mu}}{d\\tau^2}=R^{\\mu}_{.\\nu\ \alpha\\beta}u^{\\nu}u^{\\alpha}\\xi^{\\beta}$\, where $u^\\mu$ is 4-veloc ity vector tangent to geodesic and $\\xi^\\mu$ is geodesic deviation vecto r\, which connects two points corresponding to the same value of the affin e parameter $\\tau$ on two close geodesics\, was studied in multidimension al Tangherlini spacetime with line element\n\n$ds^2=g_{\\mu\\nu}dx^{\\mu}d x^{\\nu}=f(r)dt^{2}-\\frac{dr^2}{f(r)}-r^2d\\Omega^2_{D-2}\,$\n\nwhere $d\ \Omega^2_{D-2}$ and $f(r)$ are\n\n$d\\Omega^2_{D-2}=d\\theta^2_1+\\sum\\li mits_{j=2}^{D-2}d\\theta^2_j\\left(\\prod\\limits_{k=1}^{j-1}\\sin^2\\thet a_k\\right)\,\\\; f(r)=1-\\frac{\\mu_D}{r^{D-3}}+\\frac{q_D^2}{r^{2(D-3)}} \,$\n\nwhere $\\mu_D$ and $q_D$ are proportional to the mass and charge of the black hole. We have constructed a basis set of vectors\, with respect to which the equation acquires a diagonal form. In the case of radial geo desics\, when the angular momentum $L$ is zero\, all spatial components of the equation can be explicitly integrated by quadratures. Their local beh aviour are $\\xi^r\\propto\\frac{1}{r^{D-3}}$\, $\\xi^a\\propto r$\, $a=\\ theta_1\,..\,\\theta_{D-2}$. But in the case of non-radial geodesics we co nstructed solutions of spatial components geodesic deviation equation in t he vicinity of physical singularity using Fromebius method for Fuchs class equation in form of power series. This made it possible to determine that solutions in the main order have form $\\xi^r\\propto\\frac{1}{r^{D-3}}$\ , $\\xi^a\\propto r$\, $\\xi^{\\theta_{D-2}}\\propto const$\, $a=\\theta_1 \,..\,\\theta_{D-3}$. This allows us to conclude that the tidal stretching of the test object along the radial direction depends on the spacetime di mension\, while the tidal compression along the transverse directions in t he leading order does not depend on the dimension.\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3155/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3155/ END:VEVENT BEGIN:VEVENT SUMMARY:The possibilities of using of monoenergetic electron production in a pyroelectric accelerator for calibration of different detectors DTSTART;VALUE=DATE-TIME:20221202T144500Z DTEND;VALUE=DATE-TIME:20221202T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3154@cern.ch DESCRIPTION:Speakers: Andrei Oleinik (Belgorod State Unversity)\nThe chang e in temperature of single crystals in vacuum conditions\, such as lithium tantalate (LiTaO3)\, gives an attractive possibility to generate and acce lerate electron and positive ions fluxes up to 100 keV and more. This phen omenon is a base of the conception of a pyroelectric accelerator. This typ e of the accelerator is a compact device\, which does not require an exter nal high-voltage circuit and the use of hazardous materials and can be use d for electron\, positive ion\, neutron and X-ray generation.\n\nOne of th e interesting features of the pyroelectric accelerator is the generation o f monoenergetic electron flux with a stable value of peak energy for a lon g time. The reason for such long-term stabilization of flux energy is not clear yet. Here we present studies of features of electron flux in pyroele ctric accelerator depending on the pressure of residual gas\, the distance between the crystal and the target-collimator. The possibilities and pers pectives of a use of the pyroelectric accelerator for calibration are disc ussed.\n\nThe work was supported by the grant from the Russian Science Fou ndation (project №21-72-00006).\n\nhttps://indico.particle.mephi.ru/even t/275/contributions/3154/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3154/ END:VEVENT BEGIN:VEVENT SUMMARY:Ionization loss simulation in several gap neutron detector based o n rigid layer converter and gaseous chamber DTSTART;VALUE=DATE-TIME:20221202T163000Z DTEND;VALUE=DATE-TIME:20221202T164500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3147@cern.ch DESCRIPTION:Speakers: Stanislav Potashev (Institut for Nuclear Research of the Russian Academy of Sciences)\nAn ionization loss simulation in severa l sequent gaps of the neutron detector is preformed. It is based on the ri gid layer converter so as boron-10 or lithium-6 and gaseous chamber. It wa s shown that the distribution of ionization losses over gas gaps varies si gnificantly depending on the incident neutron energy.The fact can be used to control the energy of the neutron flux using this detector.\n\nhttps:// indico.particle.mephi.ru/event/275/contributions/3147/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3147/ END:VEVENT BEGIN:VEVENT SUMMARY:Methods of data processing and analysis in the RED100 experiment. DTSTART;VALUE=DATE-TIME:20221202T161500Z DTEND;VALUE=DATE-TIME:20221202T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3152@cern.ch DESCRIPTION:Speakers: Olga Razuvaeva (NRNU MEPhI)\nThe RED-100 is a two-ph ase LXe detector designed for searching CEvNS of reactor antineutrino. In 2021 this detector was located on Kalinin NPP\, data collection was finish ed at the beginning of 2022. In this report methods of data processing and analysis\, signal correction\, event selection\, position and energy reco nstruction are described. Results of calibration and comparison with simul ation are shown. Also different approaches to background reduction are dis cussed.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3152/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3152/ END:VEVENT BEGIN:VEVENT SUMMARY:Analog spectrometer of the DGFRS-2 setup: status and developments DTSTART;VALUE=DATE-TIME:20221202T160000Z DTEND;VALUE=DATE-TIME:20221202T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3148@cern.ch DESCRIPTION:Speakers: Yury Tsyganov (JINR)\nAn upgraded version of the DGF RS-2 (the Dubna Gas-Filled Recoil Separator-2) analog spectrometer to sear ch for rare ER-α correlated sequence in a real-time mode to suppress radi cally cyclotron associated background signals is presented. New “flexibl e” algorithm to operate with new analog spectrometer of the DGFRS-2 inst alled at DC-280 (the JINR Superheavy Element Factory) cyclotron setup is u nder consideration. The main goal of application of this algorithm is to s earch an optimal time correlation recoil-alpha parameter directly during t he acquisition C++ YDS code execution [1-4]. Note that the spectrometer op erates together with the 48×128 strip DSSD (Double Side Strip Detector) d etector and low pressure pentane-filled gaseous detector (~1.2 Tor\; 80 x 230 mm2) are presented schematically. First beam test results in 48Ca and 242Pu\, 243Am\, 232Th and 238U targets induced nuclear reactions are prese nted too [5-7]. Registered implanted ER spectra are compared with calculat ed ones. Some attention is paid to stability tests. Half life systematic f or Z=119\,120 are considered in brief in connection with active correlatio n method application.\n\nReferences\n\n[1] D.Ibadullayev et al. // Acta Ph ys.Polonica B (2021) 16\, No.4\, 873-878\n\n[2] Yu.S.Tsyganov et al . // Acta Phys.Polonica B (2021) 14\, No.4\, 767-774\n\n[3] Yu.S.Tsyganov // Nu cl. Phys.&Ing. (2022) / in print/\n\n[4] D.Ibadullayev et al. //Eurasian J. (2022) 6\, num 1\, 18-31\n\n[5] Yu.Ts. Oganessian et al. // Phys.Rev C 106 (2022)\,024612-1-024612-13 \n\n[6] Yu.Ts. Oganessian et al. // Phys. Rev C 106\, (2022) L031301\n\n[7] Yu.Ts.Oganessian et al. // Nucl. Instru m. & Meth. Phys. Res. A 1033(2022) 166640\n\nhttps://indico.particle.mephi .ru/event/275/contributions/3148/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3148/ END:VEVENT BEGIN:VEVENT SUMMARY:Low-pressure Time Projection Chambers for Experiments with Low-ene rgy Ions DTSTART;VALUE=DATE-TIME:20221202T154500Z DTEND;VALUE=DATE-TIME:20221202T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3149@cern.ch DESCRIPTION:Speakers: Andrey Sokolov (BINP SB RAS)\nA series of low-pressu re time-projection chambers for experiments with low-energy ions is being developed at the Budker Institute of Nuclear Physics. The development of t he series began with the creation of a test chamber with the GEM based rea dout for the separation of ions by measuring the stopping range in the gas medium. This detector is designed to upgrade the accelerator based mass-s pectrometer (AMS) to be able to separate isobaric ions. At present\, the d edicated TPC has been successfully tested and is ready for installation on the AMS. The recent results of a new ion identification method will be pr esented. \nBased on the experience gained\, we plan to upgrade the TPC to use an optical readout. This method allows achieving good spatial resoluti on along with high time resolution.\nSuccessful implementation of this tec hnique will make it possible to carry out series of interesting experiment s\, in particular\, the study of the Migdal effect and the measurement of the cross section for the thermonuclear reaction proton - boron 11. \nPrel iminary results and some details will be discussed in the presentation.\n\ nhttps://indico.particle.mephi.ru/event/275/contributions/3149/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3149/ END:VEVENT BEGIN:VEVENT SUMMARY:Data acquisition system of the TPC/MPD detector of the NICA projec t DTSTART;VALUE=DATE-TIME:20221202T153000Z DTEND;VALUE=DATE-TIME:20221202T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3150@cern.ch DESCRIPTION:Speakers: Stepan Vereschagin (Joint Institute for Nuclear Rese arch)\nThe data acquisition system contains 1488 Front-End Cards (FEC) gro uped into 24 groups of 62 pcs. in each. Each FEC has an individual full-du plex few gigabit communication channel with Readout and Control Unit (RCU) . The RCU manages each FEC within the group\, collects data and then trans mits it via a high-speed optical channel. Every 4 optical channels are con nected to a Local Data Concentrator (LDC) server computer via a Data Conce ntrator Unit (DCU) card. Each of the 6 DCU controls four RCUs\, receives d ata from them and stores it into the LDC's memory via the PCIe interface.\ n The data acquisition system is operating with raw TPC event of size of 4 0 MB containing information up to 2000 tracks at central collision and tri gger rate of up to 7 kHz in zero suppression mode.\n Overall structure of the system and rich functionality realized in its main parts is described in the report.\n\nhttps://indico.particle.mephi.ru/event/275/contributions /3150/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3150/ END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of the forward detectors of the BM@N experiment DTSTART;VALUE=DATE-TIME:20221202T090000Z DTEND;VALUE=DATE-TIME:20221202T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3139@cern.ch DESCRIPTION:Speakers: Nikolay Karpushkin (INR RAS)\nThe BM@N experiment is an ongoing fixed-target experiment launched on the extracted beam of the Nuclotron accelerator to study highly compressed nuclear matter. The forwa rd detectors of the BM@N experiment are designed to determine the geometry of nucleus-nucleus collisions - the centrality and orientation of the rea ction plane\, as well as to measure the charge distributions of spectator fragments formed in nucleus-nucleus interactions. The forward detectors - the FHCal hadron calorimeter\, the beam quartz hodoscope and the scintilla tion wall will be used for the first time in the BM@N experiment. The resu lts of the response testing of forward detectors during the SRC (Short Ran ge Correlation) run with carbon beam will be presented.\n\nhttps://indico. particle.mephi.ru/event/275/contributions/3139/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3139/ END:VEVENT BEGIN:VEVENT SUMMARY:GEM central tracking system at the BM@N experiment DTSTART;VALUE=DATE-TIME:20221202T084500Z DTEND;VALUE=DATE-TIME:20221202T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3144@cern.ch DESCRIPTION:Speakers: Andrey Galavanov ()\nBaryonic Matter at Nuclotron (B M@N) is the first experiment at the NICA accelerator complex. The aim of t he BM@N experiment is to study interactions of relativistic heavy ion beam s with fixed targets. Detectors based on Gas Electron Multipliers (GEM) ar e used of the central tracking system\, which is located inside the BM@N a nalyzing magnet. The next BM@N physics run is planned at the end of 2022. The current installation and commissioning status of the GEM tracking syst em is presented.\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3144/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3144/ END:VEVENT BEGIN:VEVENT SUMMARY:Time-Of-Flight Neutron Detector Prototype for BM@N Experiment DTSTART;VALUE=DATE-TIME:20221202T083000Z DTEND;VALUE=DATE-TIME:20221202T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3145@cern.ch DESCRIPTION:Speakers: Aleksandr Makhnev (INR of RAS)\nA new Time-Of-Flight neutron detector for the BM@N experiment at JINR\, Dubna is planned to be developed and produced. This detector will identify and measure the energ ies of neutrons produced in nucleus-nucleus collisions at energies up to 4 AGeV. Detector design utilizes small (40x40x25mm) scintillator tiles with solid-state readout\, with timing resolution of up to 100-150ps. A small- scale prototype of the future detector is produced and tested.\n\nDetector prototype's layout\, design of mechanical structure and electronics\, as well as the results of the cosmic ray tests are discussed.\n\nhttps://indi co.particle.mephi.ru/event/275/contributions/3145/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3145/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the Time of Flight System of the Mpd Experiment at the N ica Collider DTSTART;VALUE=DATE-TIME:20221202T081500Z DTEND;VALUE=DATE-TIME:20221202T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3143@cern.ch DESCRIPTION:Speakers: Victor Baryshnikov (Joint Institute for Nuclear Rese arch\, Joliot-Curie st. 6\, Dubna\, Russia. hysics Department\, M.V. Lomon osov Moscow State University\, Leninskie Gory\, 1-2\, Moscow\, Russia.)\nN ICA (Nuclotron-based Ion Collider fAсility) is a new accelerator complex designed at the Joint Institute for Nuclear Research to study properties o f dense baryonic matter. Two interaction points are foreseen in the NICA c ollider: one for studying the collision of heavy ions on the Multipurpose detector MPD\, the other for polarized beams for the experiment on the SPD installation. The ambitious physical goals of MPD require excellent parti cle identification at the maximum possible range of phase space. Identific ation of charged hadrons is achieved by combining time-of-flight measureme nts and dE/dx energy loss measurements from the time-projection camera TPC . \n\nTOF will provide:\n\n - large pseudorapidity region of |η| ≤ 1.2\ ; \n - high granularity to keep the overall system occupancy below 15% \n and minimize efficiency degradation due to double hits\;\n - good positi on resolution to ensure efficient matching of hits in the TOF system with TPC tracks\;\n - high geometrical efficiency and detection efficiency\;\n - identification of pions and kaons with pt \n\nhttps://indico.particle .mephi.ru/event/275/contributions/3143/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3143/ END:VEVENT BEGIN:VEVENT SUMMARY:MPD TPC status DTSTART;VALUE=DATE-TIME:20221202T080000Z DTEND;VALUE=DATE-TIME:20221202T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3141@cern.ch DESCRIPTION:Speakers: Sergey Movchan (JINR\, Dubna\, Russia)\nIn the frame of the JINR scientific program on study of hot and dense baryonic matter a new accelerator complex Ion Collider fAcility (NICA) based on the Nuclot ron-M is under realization. It will operate at a luminosity up to 1027 cm- 2 s-1 for ions up to Au79+. Two interaction points are foreseen at NICA fo r two detectors which will operate simultaneously. One of these detectors\ , the Multi-Purpose Detector (MPD)\, is optimized for investigations of he avy-ion collisions. The Time-Projection Chamber (TPC) is the main tracking detector of the MPD central barrel. It is a well-known detector for 3-dim ensional tracking and particle identification for high multiplicity events . The conceptual layout of MPD\, TPC design and it’s parameters\, the cu rrent status of the readout based on multiwire proportional chamber (MWPC) and readout electronics based on SAMPA chip as well as the status of TPC subsystems are presented.\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3141/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3141/ END:VEVENT BEGIN:VEVENT SUMMARY:A gaseous beam monitor for the CSR external-target experiment DTSTART;VALUE=DATE-TIME:20221202T074500Z DTEND;VALUE=DATE-TIME:20221202T080000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3146@cern.ch DESCRIPTION:Speakers: Hulin Wang (Central China Normal University)\nThe co ol storage ring (CSR) external-target experiment (CEE) will be the first l arge-scale nuclear physics experiment at the Heavy Ion Research Facility i n Lanzhou (HIRFL). Within the project of CEE\, a gaseous detector is being developed for the beam monitoring. It is designed to measure the lateral position of each beam particle up to a rate of $10^{6}$ pps with a spatial resolution better than 50 $\\mu$m\, and with minimum interference with th e beam. The beam monitor mainly consists of two field cages inside a gas v essel with electrical fields orthogonal to each other\, and custom-designe d charge sensing and readout chips on the anode of each field cage. Two pr ototypes have been developed\, with upgraded charge sensor and readout sys tem on the second one. The charge sensor integrates in the same chip the c harge sensing and readout functionalities\, and is intended to be used as direct charge sensor\, or with the gas electron multiplier (GEM). We will present the design and test of the prototypes\, with a focus on the CMOS c harge sensor of the second one.\n\nhttps://indico.particle.mephi.ru/event/ 275/contributions/3146/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3146/ END:VEVENT BEGIN:VEVENT SUMMARY:Development of ASICs for experiments at NICA DTSTART;VALUE=DATE-TIME:20221201T163000Z DTEND;VALUE=DATE-TIME:20221201T165000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3138@cern.ch DESCRIPTION:Speakers: Eduard Atkin (MEPhI)\, Artur Serazetdinov (MEPhI)\nT he results of development and laboratory testing of a prototype data conce ntrator integrated circuit (ASIC HUBv1) are presented. HUBv1 was developed for processing of signals from the detector chips of the time-projection chamber of the MPD experiment (NICA\, Dubna). The main target of this ASIC is uninterrupted processing and serialization of digital output data from two SAMPA detector chips and their transmission via AWG-36 type cables up to 1 m long at the speed of 2.56 Gbit/s to the data acquisition controlle r board. Eight data and six SLVS clock ports are used to connect the SAMPA chips. The received data is error-checked using Hamming code and is avail able on the two high-speed CML output ports\, each with bandwidth up to 2. 56 Gbps. Both SAMPA and SIMC chips are controlled by issuing control comma nds via the high-speed CML or slow SPI interfaces.\nThe HUBv1 prototype wa s manufactured using TSMC's 65 nm CMOS technology and packaged in CPGA120- type packages. The total power consumption of the ASIC does not exceed 500 mW. The results of laboratory testing of the chip and radiation resistanc e testing of the analog blocks are presented.\n\nThe development of key bu ilding blocks of a prototype application specific integrated circuit (ASIC ) for the SPD experiment at NICA Nuclotron (Dubna) is presented. It was de signed as an 8-channel fully differential amplifier-discriminator which co uld be used as a front-end electronics for resistive plate chambers as wel l as for time-of-flight measurements.\n\nThe ASIC has an architecture simi lar to the NINO chip developed at CERN. Each channel consists of the foll owing functional blocks: a current preamplifier-shaper with the peaking ti me of 500 ps\, low-frequency feedback with built-in threshold preset circu it\, few additional amplification stages\, pulse stretcher\, LVDS output s tage and some other supporting blocks. The chip is optimized for the input capacitance in range 1-10 pF\, has adjustable threshold of 10-450 fC\, an d adjustable stretching time of 1-100 ns. The equivalent noise charge is n ot more than 2500 e at input capacitance up to 10 pF. The design was optim ized for reducing front-edge jitter (less than 15 ps). Both schematic and layout of designed blocks are presented\, simulation results are shown. PV T variation and Monte-Carlo mismatch plots are also given.\n\nThe developm ent was conducted in the 180 nm CMOS process PDK of Mikron fab at Zelenog rad. GDSII file was submitted to the factory at late August 2022.\n\nhttp s://indico.particle.mephi.ru/event/275/contributions/3138/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3138/ END:VEVENT BEGIN:VEVENT SUMMARY:Genetic Algorithm for determination of event collision time and pa rticle identification by Time-Of-Flight at SPD NICA DTSTART;VALUE=DATE-TIME:20221201T161500Z DTEND;VALUE=DATE-TIME:20221201T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3137@cern.ch DESCRIPTION:Speakers: Semyon Yurchenko (Saint Petersburg State University\ , Laboratory of ulta-high energy physics)\nStudying spin-related phenomena will help uncover information about internal structure of nucleon. It can be done using polarized beams of protons and deuterons. To study those ef fects on NICA collider it is proposed to install the Spin Physics Detector (SPD) in one of two interaction points.\n\nIn this work two problems were studied. First is developing a fast and accurate algorithm for determinati on of $pp$-collision time($t_{0}$) for the SPD experiment [1]. Second is d eveloping particle a identification(PID) procedure based on $TOF$ signals. \n\nUsage of $TOF$ detectors to identify particles is one of the most reli able technique. To reconstruct the particle mass only three values are nee ded: $\\vec{p}$ - momentum of the particle\, $L$ - arc length of the parti cle trajectory and $TOF$ - Time-Of-Flight. To measure $TOF$ one needs star t($t_{0}$) and stop signals. While stop signals are obtained with $TOF$ de tector\, $t_{0}$ cannot be measured directly. Main idea for $t_{0}$ determ ination: for tracks in the event find a set of masses that minimises sum o f the squares of the residuals ($\\chi^{2}$). \n\nTo solve $\\chi^{2}$ min imisation problem Differential Evolution-inspired [2] Genetic Algorithm(GA ) was developed and it's results were compared to Brute Force Algorithm(BF A). BFA have very slow run time\, but it provides the exact solution to th e $\\chi^{2}$ minimisation problem. So main requirements to GA was to decr ease run time while keeping high accuracy. \n\nWith a reliable method for $t_{0}$ determination\, particle identification can be performed. There ar e several approaches that can be used for PID procedure [3]. In this work Bayesian approach\, "n-sigma" criteria and solution for $\\chi^{2}$ minimi sation problem were compared.\n\n\n 1. Conceptual design of the Spin Phys ics Detector. arXiv:2102.00442\n 2. E. Zhabitskaya and M. Zhabitsky\,\n Proceedings of the 15th annual conference on Genetic and evolutionary comp utation\, GECCO'13\, ACM\, 455--462 (2013)\n 3. The ALICE Collaboration.\ , Adam\, J.\, Adamová\, D. et al. Particle identification in ALICE: a Bay esian approach. Eur. Phys. J. Plus 131\, 168 (2016). https://doi.org/10.11 40/epjp/i2016-16168-5\n\nhttps://indico.particle.mephi.ru/event/275/contri butions/3137/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3137/ END:VEVENT BEGIN:VEVENT SUMMARY:Cryogenic scintillation CsI(pure) detector of low energy neutrino DTSTART;VALUE=DATE-TIME:20221201T160000Z DTEND;VALUE=DATE-TIME:20221201T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3131@cern.ch DESCRIPTION:Speakers: Alexander Strizhak (INR RAS\, MIPT)\nDetection of lo w energy neutrino is a challenging task for advanced \nstudies of coherent neutrino scattering processes or for the observation \nof neutrino magnet ic momentum. For this purpose\, the detector must be \ncapable to register the deposited energies starting from a hundred of \neV. One of the optio n is the development of CsI(pure) scintillation \ndetector operating at th e temperature of liquid nitrogen. It is known\, \nthat this scintillator c ould achieve the record light yield of about 120 \nthousand photons per on e MeV of deposited energy. It means that 100 eV \nenergy deposition corres ponds to 12 photons\, that can be detected by \nadvanced photodetectors.In this work we present the performance of \nsmall CsI(pure) scintillation c ell which is readout by compact silicon \nphotomultiplers (SiPM) with high detection efficiency. The SiPM thermal \nnoises and the achieved light co llection efficiency are presented. It \nwill be shown that signal of about 30 photoelectrons/keV is attainable \nin such configuration of detector.\ n\nhttps://indico.particle.mephi.ru/event/275/contributions/3131/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3131/ END:VEVENT BEGIN:VEVENT SUMMARY:Upgrade of Projectile Spectator Detector at NA61/SHINE experiment DTSTART;VALUE=DATE-TIME:20221201T154500Z DTEND;VALUE=DATE-TIME:20221201T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3134@cern.ch DESCRIPTION:Speakers: Sergey Morozov (INR RAS)\nThe NA61/SHINE is a fixed target experiment at SPS (CERN) aimed to study proton-ion and ion-ion coll isions with the energy range 13 – 150 AGeV. A new physics program of the NA61/SHINE experiment beyond 2020 includes open charm measurements. The i ncreased by an order of magnitude beam rate requires detectors upgrade to work with high trigger rate and to survive in new high radiation condition s.\n\nThe Projectile Spectator Detector (PSD)\, a sampling hadron calorime ter\, is used in the NA61/SHINE experiment to measure the collision centra lity and reconstruct the event plane. Instead of the present PSD\, two for ward calorimeters are used. The first one is modified current PSD with bea m hole in the center and the second one is a new calorimeter with small tr ansverse sizes placed downstream to detect heavy fragments. Details of th e PSD upgrade as well as results of the performance studies for new calori meter system with simulations will be presented.\n\nhttps://indico.particl e.mephi.ru/event/275/contributions/3134/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3134/ END:VEVENT BEGIN:VEVENT SUMMARY:Cast lead-polystyrene spaghetti type calorimeter for LHCb ECAL Upg rade II DTSTART;VALUE=DATE-TIME:20221201T153000Z DTEND;VALUE=DATE-TIME:20221201T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3130@cern.ch DESCRIPTION:Speakers: Igor Diachkov (NUST MISiS)\nThe LHCb Upgrade phase I I aims to collect $300 fb^{-1}$ in a few years operating at a luminosity o f $1.5*10^{34} cm^{-2} s^{-1}$. This requires a significant change of the systems including the electromagnetic calorimeter (ECAL)\, which must be c apable to sustain integrated radiation doses up to 1 MGy in the innermost region. The second major requirement is time resolution of the order of a few tens of picoseconds. The new ECAL will be subdivided into zones: spagh etti calorimeter (SPACAL) in the central part with the highest expected ra diation doses and zones with Shashlik-type modules of different granularit y.\nThe SPACAL region is subdivided into an innermost region with tungsten 3D-printed absorber and radiation hard crystals (e.g. GAGG\, GFAG) with $ 15*15mm^2$ cell size\, and an intermediate region with a cast lead-based a bsorber and polystyrene scintillating fibres.\nThis talk presents the resu lts of the first cast lead-polystyrene spacal prototype studies performed with an electron beam at the CERN SPS test-beam facility.\n\nhttps://indic o.particle.mephi.ru/event/275/contributions/3130/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3130/ END:VEVENT BEGIN:VEVENT SUMMARY:MiniSPD test bench for testing of SPD detector prototypes. DTSTART;VALUE=DATE-TIME:20221201T151500Z DTEND;VALUE=DATE-TIME:20221201T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3133@cern.ch DESCRIPTION:Speakers: Elena Kokoulina (JINR)\nSPD (Spin Physics Detector) collaboration proposes to install a universal setup in the second interact ion point of the NICA collider (JINR\, Dubna) to study the spin structure of the proton and deuteron. It will be able to research of spin-related ph enomena with polarized proton and deuteron beams at a collision energy up to 27 GeV and a luminosity up to 10$^{32}$ cm$^{-2}$ s$^{-1}$. In this rep ort we inform about the basic tasks of SPD project. We manufactured a test bench MiniSPD to check the SPD detector prototypes with cosmic muons. The current results of simulation and comparison with data on cosmic rays at this stand are presented.\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3133/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3133/ END:VEVENT BEGIN:VEVENT SUMMARY:About an accuracy of ECal/MPD calibration with cosmic muons DTSTART;VALUE=DATE-TIME:20221201T150000Z DTEND;VALUE=DATE-TIME:20221201T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3135@cern.ch DESCRIPTION:Speakers: Viacheslav Kulikov (NRC "Kurchatov institute")\nM.Bh attacharjee1\,3\, S.A.Bulychjov2\, Yu.F.Krechetov1\, V.V. Kulikov2\,\nM.A. Martemianov2\, M.A. Matsyuk2\, I.A. Tyapkin1\n1 Joint Institute for Nucle ar Research\, 141980\, Dubna\, Russia\n2 National Research Center “Kurch atov Institute”\, Moscow\, 123182 Russia\n3 Gauhati University\, Guwahat i\, Assam 781014\, India\n In a framework of the NICA/MPD project [1]\, a cylindrical electromagnetic calorimeter (ECal) [2] with an internal(ext ernal) diameter of 3.45 (4.6) m \, a length of 6 m and a total weight of a bout 60 tons is under construction. The calorimeter consists of 38\,400 “shashlik”-type towers with 210 alternating layers of a 1.5 mm scintil lator and 0.3 mm lead coated with reflective paint. The shapes of the towe rs are of 64 types. Approximately they are truncated pyramids with a base of 4x4 cm2\, height of 41 cm and vertex angles of 0.9 and 1.2 degrees in t he longitudinal and transverse plane relative to the cylinder axis. ECal i mplements the so-called projective geometry when the axes of all towers lo ok at one point - the intersection point of the collider beams located in the center of the cylinder. Every 16 towers are combined into 2400 modules of 8 types. Large number of modules have been already produced [3] and te sted on electron beams and cosmic rays [4\,5]. In this report we discuss t he energy calibration procedure with cosmic muons with the main emphasis o n its accuracy and corrections needed for different types of the towers an d their orientation in space. The results are based on MC simulation and c omparison with the existing measurements. \n[1] The MPD Collaboration: V. Abgaryan et al. «Status and initial physics performance studies \n of the MPD experiment at NICA. Eur.Phys.J.A 58 (2022) 7\, 1 40.\n[2] V.V. Kulikov et al. ECal MPD: geometry and simulation. 2020 JINST 15 C09017. [3] Y. Li et al. Production and quality control of NICA-MPD sh ashlik electromagnetic calorimeter \n in Tsinghua University. JINST 17 (2022) 04\, T04005.\n[4] V.A. Baskov et al. Electron Beam Test of the M PD Electromagnetic Calorimeter on the Pakhra \n Synchrotron. Phys.Par t.Nucl. 52 (2021) 4\, 663.\n[5] M. Bhattacharjee et al. Calibration of NIC A-MPD electromagnetic calorimeter modules with \n cosmic muons. 20 20 J. Phys.: Conf. Ser. 1690 012052.\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3135/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3135/ END:VEVENT BEGIN:VEVENT SUMMARY:Improvement of the energy resolution for neutral hadrons in highly granular calorimeters based on a neural network approach DTSTART;VALUE=DATE-TIME:20221201T144500Z DTEND;VALUE=DATE-TIME:20221201T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3132@cern.ch DESCRIPTION:Speakers: Sergey Korpachev (LPI)\nThe technology of highly gra nular calorimeters is one of the main innovations that will be implemented in planned experiments on future colliders. This work shows an algorithm for the improvement of energy resolution in highly granular calorimeters b ased on a machine learning technique. An artificial neural network\, which helps to connect calorimeter observables\, was trained and tested. The st udy was performed on a simulated version of the detector with highly granu lar calorimeters for single hadrons with energies from 1 to 120 GeV.\n\nht tps://indico.particle.mephi.ru/event/275/contributions/3132/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3132/ END:VEVENT BEGIN:VEVENT SUMMARY:Prediction of electromagnetic fraction in a hadronic shower using deep neural network DTSTART;VALUE=DATE-TIME:20221201T143000Z DTEND;VALUE=DATE-TIME:20221201T144500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3136@cern.ch DESCRIPTION:Speakers: Marina Chadeeva (P.N. Lebedev Physical Institute of RAS (LPI))\nThe intrinsically large variation of the energy deposited in a calorimeter by hadrons imposes limitations on the improvement of hadron e nergy resolution. The fluctuation of electromagnetic fraction within a had ronic shower is known to be one of the main sources of such variations. Se veral techniques were developed to improve the energy resolution for hadro ns including the so called hardware compensation (compensating and dual-re adout calorimeters) and software compensation approaches. The reliable pre diction of the amount of electromagnetic fraction on an event-by-event bas is opens a possibility to correct the energy during the offline reconstruc tion and improve the energy resolution. In this study\, the samples were i nvestigated of hadronic showers simulated with physics lists from Geant4 p ackage version 10.3 in the model of a highly granular hadron calorimeter f or the initial hadron energies 10--80 GeV. The deep neural network was tra ined using a supervised learning and calorimetric observables as inputs to predict the electromagnetic fraction in a shower. The achieved neural net work performance and observed improvement in hadron energy resolution of m ore than 15% are presented and discussed.\n\nhttps://indico.particle.mephi .ru/event/275/contributions/3136/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3136/ END:VEVENT BEGIN:VEVENT SUMMARY:Observation of the DANSS plastic scintillator aging during of 6 ye ars of operation DTSTART;VALUE=DATE-TIME:20221201T094500Z DTEND;VALUE=DATE-TIME:20221201T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3128@cern.ch DESCRIPTION:Speakers: Igor Alekseev (KCTEP NRC KI)\nAging of the plastic s cintillators plays a significant role in the degradation\nof detectors per formance. Several effects are considered responsible for\nthis process lik e mechanical stresses\, water penetration and oxidation.\nThe DANSS detect or core consists of 2500 polystyrene based scintillation strips. \nThe det ector is located just below an industrial nuclear reactor\nof Kalininskaya NPP. The room housing the detector is air conditioned and \nhas very low humidity. The temperature of about 20C was sustained at\nthe detector core . The performance of the scintillator is permanently\nmonitored with cosmi c muons passing through the detector. 6 years of\nobservation are reported since April 2016 till March 2022. The light yield\ndegradation about 1% p er year is observed.\n\nhttps://indico.particle.mephi.ru/event/275/contrib utions/3128/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3128/ END:VEVENT BEGIN:VEVENT SUMMARY:DANSS Detector Upgrade DTSTART;VALUE=DATE-TIME:20221201T093000Z DTEND;VALUE=DATE-TIME:20221201T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3125@cern.ch DESCRIPTION:Speakers: Dmitry Svirida (ITEP)\nDANSS detector at Kalininskay a nuclear power plant sets world records in antineutrino detection. Counti ng rates of up to 5000 events per day made it possible to collect more tha n 6.5 million antineutrinos in 6 years of stable operation. The data sampl e is extremely clean and features the signal to background ratio in excess of 50. Yet only moderate energy resolution of 34% at 1 MeV limits the sen sitivity of the experiment for the sterile neutrino searches. \nThe upgrad e of the detector is aimed at more than twice better energy resolution of 12% at 1 MeV. Besides that the sensitive volume will be increased by 70% i nside the same shielded space on the lifting platform. The talk will addre ss the details and the status of the upgrade together with the first resul ts of testing. The expected influence of the improvements on the sensitivi ty for the sterile neutrino will also be discussed.\n\nhttps://indico.part icle.mephi.ru/event/275/contributions/3125/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3125/ END:VEVENT BEGIN:VEVENT SUMMARY:Puzzle in decoherence measurements of entangled annihilation photo ns DTSTART;VALUE=DATE-TIME:20221201T091500Z DTEND;VALUE=DATE-TIME:20221201T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3123@cern.ch DESCRIPTION:Speakers: Sultan Musin (INR RAS)\nThe annihilation photons are the first system where the entanglement of quantum states was experimenta lly studied. These photons are produced in the positron-electron annihilat ion and have 511 keV energy that coincides with the electron mass. Accordi ng to the theory\, two photons have mutually perpendicular linear polariza tions\, and their quantum states are entangled. Inspite of extensive studi es the entanglement was not experimentally proved due to the low efficienc y of Compton polarimeters that are the only tool for the polarization meas urements of photons with such a high energy. We constructed the setup that allows a direct comparison of polarization correlations for both\, entang led and decoherent quantum states. The natural expectation is observation of principal differences in behavior of these two different quantum states . Nevertheless\, the experimental results reveal the same behavior in the polarization correlations of both\, entangled and decoherent states. We di scuss the construction of setup\, Monte Carlo simulation and the experimen tal measurements of entangled and decoherent annihilation photons. A physi cal interpretation of the data is presented.\n\nhttps://indico.particle.me phi.ru/event/275/contributions/3123/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3123/ END:VEVENT BEGIN:VEVENT SUMMARY:Current status of the novel 3D SuperFGD detector for the T2K exper iment DTSTART;VALUE=DATE-TIME:20221201T090000Z DTEND;VALUE=DATE-TIME:20221201T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3127@cern.ch DESCRIPTION:Speakers: Anna Dergacheva (Institute for Nuclear Research of t he Russian Academy of Sciences\, 117312 Moscow\, Russia )\nT2K (Tokai to K amioka) is the first long-base neutrino experiment with the concept of an off-axis neutrino beam generated by a 30 GeV proton synchrotron (PS) based on the Japan Proton Accelerator Research Complex (J-PARC). \nThis project is aimed at finding of a new source of violation of charge-conjugation pa rity-reversal CP-symmetry in the neutrino sector - a necessary element for explaining physical phenomena beyond the Standard Model\, namely the bary on asymmetry of the Universe (the matter-antimatter disparity) and leptoge nesis. \nCurrently\, the T2K experiment excludes the CP-conservation ($\\delta_{CP} = 0\,\\pi$) at the level of 90% CL [1]. In order to increase its sensitivity to CP-vi olation\, it is necessary to reduce systematic uncertainties in predicting the number of events at the far water Cherenkov detector Super-Kamiokande up to 3-4% from the current level of 6-7%. Thus\, an intensive upgrade pr ogram of the ND280 off-axis detector was launched [2]. As a part of this u pgrade\, a new fully segmented 3D neutrino scintillation detector SuperFGD was proposed and designed. It will allow precision measurements of neutr ino cross-sections and significantly increase the sensitivity to CP-violat ion in long-base experiments. \nSuperFGD with a total weight of about t wo tons\, consisting of two million optically isolated cubes\, each of the m with a volume of 1 cm$^3$ and with three holes for inserting wavelength shifting fibers (a total of 60\,000 channels for signal readout)\, was pro duced in Russia and will be a key element of the new upgraded near detecto r of the T2K experiment. All active 56 layers of the SuperFGD and the asse mbly platform have been shipped to Japan in June 2022. The assembly of the SuperFGD was started at J-PARC in October 2022. \nSuch impor tant components of the SuperFGD detector as electronics\, mechanics\, phot osensors\, LED calibration system\, DAQ are also being actively prepared and will be discussed. The current status and upcoming plans for the SFGD as a part of the ND280 upgrade will be presented at the conference.\n\nRef erences \n\n[1] K. Abe\, et al.\, Constraint on the matter-antimatter symm etry-violating phase in neutrino oscillations\, Nature 580 (2020) 7803\, 3 39-344. arXiv:1910.03887. \n\n
[2] K. Abe\, et al.\, T2K ND280 Upgrade - Technical Design Report. arXiv:1901.03750 
[physics.ins-det].\n\nhttps: //indico.particle.mephi.ru/event/275/contributions/3127/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3127/ END:VEVENT BEGIN:VEVENT SUMMARY:Antineutron reconstruction and identification in electromagnetic c alorimeter DTSTART;VALUE=DATE-TIME:20221201T084500Z DTEND;VALUE=DATE-TIME:20221201T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3124@cern.ch DESCRIPTION:Speakers: Pavel Gordeev ()\nAntineutron studies are an unexplo red domain of high energy physics. Several directions of research can be o utlined\, such as: measuring of hadrons decaying into antineutrons\, measu ring the interaction of antineutrons with hadrons\, and searching for boun d states of antineutrons. We present a method for measuring antineutrons b y the electromagnetic calorimeter PHOS of the ALICE experiment. The antine utron can be identified by the cluster shape and the energy deposition in the calorimeter\, and its momentum can be reconstructed using time-of-flig ht information. The proposed method was verified via searching for decays $\\bar{\\Sigma}^{+}\\rightarrow\\bar{n}\\pi^{+}$and $\\bar{\\Sigma}^{-}\\r ightarrow\\bar{n}\\pi^{-}$with an antineutron reconstructed in PHOS.\n\nht tps://indico.particle.mephi.ru/event/275/contributions/3124/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3124/ END:VEVENT BEGIN:VEVENT SUMMARY:Detectors of the SPASCHARM experiment at U70 accelerator DTSTART;VALUE=DATE-TIME:20221201T082500Z DTEND;VALUE=DATE-TIME:20221201T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3129@cern.ch DESCRIPTION:Speakers: Pavel Semenov ()\nData taking has been started at th e first stage of the polarization experiment SPASCHAR$M at U70 accelerator . The report describes the detectors of the current experimental setup as well as the results of measurements of their characteristics during the be am data taking in the runs of 2018-2022\n\nhttps://indico.particle.mephi.r u/event/275/contributions/3129/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3129/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of the pp-\, pd- and dd- elastic scattering for the pol arimetry at NICA DTSTART;VALUE=DATE-TIME:20221201T081000Z DTEND;VALUE=DATE-TIME:20221201T082500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3122@cern.ch DESCRIPTION:Speakers: Arkadiy Terekhin (JINR)\nThe possibility to use the pp-\, pd- and dd- elastic scattering for the polarimetry at NICA using the existing experimental data is discussed. The first results of the simulat ion of these processes at the total energy up to 27 GeV for the segmented scintillation counter are presented.\n\nhttps://indico.particle.mephi.ru/e vent/275/contributions/3122/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3122/ END:VEVENT BEGIN:VEVENT SUMMARY:The absolute polarimeter based on reaction of pp elastic scatterin g at the SPASCHARM facility at U70. DTSTART;VALUE=DATE-TIME:20221201T075500Z DTEND;VALUE=DATE-TIME:20221201T081000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3126@cern.ch DESCRIPTION:Speakers: Marina Nurusheva (MEPhI)\nThe absolute polarimeter f or measurements of proton and antiproton beam polarizations at the SPASCHA RM experiment at U-70 of IHEP\, Protvino\, is discussed. Polarized target will be used to measure analyzing power AN of the elastic reactions. Measu red value of AN is required to define beam polarization. Two different det ectors of the experimental setup were analyzed. The first one is supposed to use scintillation counters\, the second detector is based on proportion al chambers. Efficiency of registration of elastic pp scattering is compar ed for two configurations of the experimental setup.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3126/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3126/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of FSR photon suppression in two positron decay mode of dark matter particles by means of MC generators. DTSTART;VALUE=DATE-TIME:20221201T144500Z DTEND;VALUE=DATE-TIME:20221201T150000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3121@cern.ch DESCRIPTION:Speakers: Ramin Barak ()\nIn this work we consider hypothetica l decay of a dark matter particle into two positrons with final state radi ation (FSR): $X^{++}\\rightarrow e^{+} e^{+} \\gamma$. We investigate poss ibility of FSR suppression with respect to the analogous decay of $X^{++}\ \rightarrow e^{+} e^{-} \\gamma$ in quantum mechanical case. This is done with the use of MC generators. Such suppression would help explaining posi tron anomaly in cosmic rays\, where accompanying gamma radiation contribut ing to isotropic gamma-ray background (IGRB) leads to a contradiction. Suc h suppression is to be expected due to the so-called “single-photon theo rem”\, which connects the quantum mechanical case to the classical one\, where such a radiation is simply nonexistent. Our results show that suppr ession indeed does occur and intensifies with an increase of photon energy \, which should assist in resolving the above-mentioned contradiction.\n\n https://indico.particle.mephi.ru/event/275/contributions/3121/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3121/ END:VEVENT BEGIN:VEVENT SUMMARY:Behavior of moment of inertia in highly deformed 24Mg and 20Ne DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T142500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3332@cern.ch DESCRIPTION:Speakers: Mariia Mardyban ()\nV. O. Nesterenko$^{1\,2}$\, M.A. Mardyban$^{1\,2}$\, P.-G. Reinhard$^3$\, A. Repko$^4$\n\n$^1$Laboratory o f Theoretical Physics\, Joint Institute for Nuclear Research\, Dubna\, Mos cow Region 141980\, Russia\n\n$^2$ Dubna State University\, Dubna\, Moscow Region 141982\, Russia\n\n$^3$ Institut für Theoretische Physik II\, Uni versität Erlangen\, D-91058\, Erlangen\, Germany\n\n$^4$Institute of Phys ics\, Slovak Academy of Sciences\, 84511 Bratislava\, Slovakia\nE-mail: mm ardyban@mail.ru\n\nWe suggest the self-consistent description of the groun d-state moment of inertia (MI) in highly prolate light nuclei $^{24}$Mg an d $^{20}$Ne (with experimental equilibrium axial quadrupole deformations $ \\beta_2$=0.605 and 0.72\, respectively [1]). These nuclei provide an inte resting opportunity to explore dependence of MI on the pairing\, ground-st ate correlations and nuclear shape at extreme deformations. The calculati ons are performed with Skyrme forces SVbas\, SkM*\, and Sly6 for deformati on range 0.1 \n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3332/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3332/ END:VEVENT BEGIN:VEVENT SUMMARY:THE CROSS-SECTION OF NUCLEAR-TUNGSTEN INTERACTIONS OBTAINED WITH M EASUREMENTS OF COSMIC RAYS BY PAMELA DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3330@cern.ch DESCRIPTION:Speakers: Olga Golub ()\nThe aim of this work is to study the cross-section of the inelastic interactions of nuclei with tungsten based on the data of PAMELA space experiment [1]. This instrument is a magnetic spectrometer designed to study fluxes of charged particles in cosmic rays\ , which was launched into the near-Earth orbit aboard the ResursDK1 satell ite\; data collection continued from 2006 to 2016. PAMELA includes a set o f detectors which helps to identify the particles including their magnitud e and sign of charge\, rigidity\, velocity\, mass and energy. So\, we can select from the PAMELA data a necessary component of cosmic rays with know n particles and their energy coming at a known angle. At the same time\, a nother detector - a coordinate-sensitive calorimeter with a tungsten absor ber plays a role of target for these particles. This looks like an experim ent in particle physics on accelerators with formation of a beam of partic les and observation of its interaction in target. Thus\, it becomes possib le to study the characteristics of nuclear-nuclear interactions with a lar ge number of different nuclei in a beam according to chemical composition of cosmic rays in a wide energy range from hundreds of MeV to ˜TeV. A sim ilar method is used in ground-based observations of ultrahigh-energy cosmi c rays\; however\, in this work\, we use the previously proposed method re lies on a much larger amount of information about cosmic ray particles due to the precision nature of the PAMELA measurements [2]. In the report\, w e present the experimental cross sections for the interaction of nuclei fr om protons to carbon with tungsten nuclei obtained by the described method . Obtained results compared with the cross-sections reconstructed from the simulation data coming from Geant4 software package [3]\, with measuremen ts at accelerators and existing theoretical models. Results can be used to improve our knowledges about nuclear forces and expand the standard Geant 4 hadronic models and other numerical packages describing the interaction of particles with matter.\n\n1. O. Adriani\, G. Barbarino\, G.A. Bazilevsk aya et al\, PAMELA - A Payload for Antimatter Matter Exploration and Light -nuclei Astrophysicsg\, Astroparticle Physics\, V.27\, 2007.\n2. О. Го луб\, А. Майоров\, Определение сечения неу пругого взаимодействия протонов и ядер гелия с вольфрамом по данным космическо го эксперимента PAMELA\, Учен. зап. физ. фак-т а Моск. ун-та. 2019\n3. S. Agostinelli et al.\, Geant4 - A Simula tion Toolkit\, Nucl. Instrum. Meth. A 506\, 2003.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3330/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3330/ END:VEVENT BEGIN:VEVENT SUMMARY:The compact D-D neutron generator with controllable flux for low-b ackground detector calibration purposes DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3329@cern.ch DESCRIPTION:Speakers: Andrei Oleinik (Belgorod State Unversity)\, Artemiy Klenin (Belgorod National Research University)\nThe d+d reaction is very w ell suited for calibration due to the 2.45 MeV fast neutron reaction chann el. Due to this circumstance\, the d+d neutron generator is considered as one of the promising tools for calibrating low-background neutrino and dar k matter detectors [1]. The current status of the development of a compact neutron generator is presented. The generator includes the elements of th e Pierce electron gun\, magnetic elements for effective ion generation and the target assembly at a positive potential. Unlike previous versions [2- 5]\, the current version of the neutron generator allows obtaining a stabl e and controllable low neutron flux (100-1000 particles per second per ful l solid angle). \nThe current design of a compact neutron generator\, a c omputer model of the electric field and ion flux are presented. The result s of the ion current and neutron flux measurement under various conditions are discussed. \n\nThe work was financially supported by a Program of the Ministry of Education and Science of the Russian Federation for higher ed ucation establishments\, project No. FZWG-2020-0032 (2019-1569). \n\nRefer ences \n[1] F. N. Beg et al.\, Appl. Phys. Lett. 80\, 3009 (2002) \n[2] A.S. Chepurnov et al.\, 2017 J. Phys.: Conf. Ser. 798 012119 \n[3] A.S. C hepurnov et al.\, 2017 J. Phys.: Conf. Ser. 934 012013. \n[4] A.S. Chepur nov et al.\, 2018 JINST 13 C02035 \n[5] A.S. Chepurnov et al.\, 2019\, J. Phys.: Conf. Ser 1390 012103.\n\nhttps://indico.particle.mephi.ru/event/2 75/contributions/3329/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3329/ END:VEVENT BEGIN:VEVENT SUMMARY:The early Universe: Particle interacting with domain walls DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3310@cern.ch DESCRIPTION:Speakers: Ekaterina Esipova (National Research Nuclear Univers ity MEPhI)\nWe consider the interaction of particles with domain walls in the early Universe. The domain wall is a topological soliton of a scalar f ield. We obtain quantitative estimates for transmission and reflection coe fficients using various approximate expressions for the effective potentia l of interaction.\n\nhttps://indico.particle.mephi.ru/event/275/contributi ons/3310/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3310/ END:VEVENT BEGIN:VEVENT SUMMARY:Compact extra dimensions as the source of primordial black holes DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3309@cern.ch DESCRIPTION:Speakers: Maxim Krasnov (Mephi)\nWe discuss the model of the p rimordial black holes formation at the reheating stage. These small massiv e black holes appear due to specific properties of the compact extra dimen sions. The latter gives rise the low energy model containing the effective scalar field potential capable for the domain walls production. Formed during inflation\, these walls are quite dense so they collapse soon after inflation ends. The discussion is performed within the scope of multidime nsional $f(R)$-gravity.\n\nhttps://indico.particle.mephi.ru/event/275/cont ributions/3309/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3309/ END:VEVENT BEGIN:VEVENT SUMMARY:The role of metallicity in Compact binary merger Formation DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3308@cern.ch DESCRIPTION:Speakers: Sourav Roy Chowdhury (Southern Federal University)\n The binary black hole coalescences GW150914 and GW151226 observed by the L IGO enabled us to investigate gravity in the strong-field regime. In the f ormation models\, including isolated binary stars\, there are still many o pen questions about the sustainability of mass transfer and common envelop e evolution. The gravitational wave (GW) sources have been predicted using extensive binary population simulations. We model the galactic population of compact binaries with the "Binary Population Synthesis" method using C OSMIC and GW signals. The population's ultimate fate has been predicted ba sed on metallicity. The formation characteristics of the final mass depend strongly on the initial mass and the metallicity associated with a system -defined critical point.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3308/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3308/ END:VEVENT BEGIN:VEVENT SUMMARY:Can we create time-machine ? DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3307@cern.ch DESCRIPTION:Speakers: Victor Kuryan ()\nOne of the features of general rel ativity is the possible existence of space-time with a nontrivial topologi cal and casual global structure . The real three-dimensional space might i n principle be multiply connected and there might exist wormholes in it. It was shown that a stable wormhole ( if only exist ) can be transformed i nto a time machine. If we take into account quantum field fluctuations in given space with wormhole \, we find amplification of fluctuations in appr oaching to Cauchy horizon. Renormalized stress-energy tensor of a quantum field diverge at the Cauchy horizon. In particular quantum field energy be come infinite. Usually this fact is interpreted as impossibility to create time machine (chronology protection). This result was obtained in classi cal consideration of given wormhole's throats motion and quantum field eff ects in given geometry.\nIn present paper we use quantum mechanics for cal culation of wormhole's throats motion . This approach gives the possibilit y of time-machine creation of the order of 1. This process is very similar to Quantum tunnelling in standard quantum mechanic.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3307/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3307/ END:VEVENT BEGIN:VEVENT SUMMARY:Entropy production scenarios within SM and BSM Physics DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3303@cern.ch DESCRIPTION:Speakers: Arnab Chaudhuri ()\nThe possible entropy production scenarios in the early\nuniverse are revisited. From the particle physics viewpoint we consider\nelectroweak phase transition (EWPT) in the standard model (SM) and\nbeyond standard model (BSM) scenarios like 2 Higgs doubl et model (2HDM)\nas a source of entropy influx into the primordial plasma. First order\nphase transition in the case of 2HDM is realised. From a co smological\nviewpoint the evaporation of mini primordial black holes (PBH) in their\nmatter dominated (MD) stage in the early Universe is considered for the\nsame. The production of entropy and in turn the dilution of pree xisting\nbaryon asymmetry and the dark matter density are considered in de tails\nas well as possible production of entropy as a result of first orde r\nphase transition is discussed qualitatively.\n\nhttps://indico.particle .mephi.ru/event/275/contributions/3303/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3303/ END:VEVENT BEGIN:VEVENT SUMMARY:Possibility of weakening the constraint on abundance of primordial black holes from Eridanus II DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3302@cern.ch DESCRIPTION:Speakers: Maxim Krasnov (Mephi)\nStellar cluster\, observed in dwarf galaxy Eridanus II\, provides strong constraint on abundance of mas sive compact halo objects (MACHOs) of mass $10 M_{\\odot} \\leq M\\leq 10^ 6 M_{\\odot}$\, so they cannot be the main component of dark matter. MACHO dark matter should dynamically heat the cluster\, driving it to larger si zes and higher velocity dispersions until it dissolves into galaxy. \nPrim ordial black holes (PBH) are subject to this constraint. PBHs are now of s pecial interest in connection to LIGO/Virgo results\, early quasars observ ation\, but historically first reason of very great interest to PBH is acc ounted for by dark matter (DM) problem. There have been plenty of works co nsidering PBH as DM candidate\, but\, unfortunately\, most of them just on ly put constraints overlapping each other on all relevant mass range. We c onsider cluster of PBHs of cluster mass within interval constrained from E ridanus.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3302/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3302/ END:VEVENT BEGIN:VEVENT SUMMARY:The semiclassical limit of a closed isotropic model of the Univers e with a scalar field DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3301@cern.ch DESCRIPTION:Speakers: Darya Kislyakova (Department of Theoretical and Comp utational Physics\, Southern Federal University)\nThe report focuses on st udying the semiclassical limit in the case of a closed isotropic model wit h a scalar field\, decomposed into modes. The calculations are made within frameworks of two approaches. The first is the Wheeler-DeWitt quantum geo metrodynamics\, and the second is the extended phase space approach\, that is known to be gauge dependent. The work is aimed in comparing results\, obtained within the scopes of these approaches. The transition to the semi classical limit is implemented by using the Born-Oppenheimer type of appro ximation. The expansion parameter is chosen to be M=c^3/16πG\, that is a nalogous to the coefficient in expression for the classical action of grav itational field. It is shown that computations in present case differ from the ones in the case of homogeneous scalar field\, and we have to make ch anges in approximation scheme for obtaining adequate results. In the both approaches\, O(1/M) order of the approximation corresponds to a Schrödin ger equation with quantum gravitational corrections. The obtained equation s coincide if we choose the lapse function N=1. Next\, the question of uni tary evolution is discussed. In present work we follow the method used in works by Kiefer and Singh\, so corrections terms have non-unitary characte r. This circumstance can be avoided by using other technique\, for instanc e\, the one proposed by Maniccia and Montani.\n\nhttps://indico.particle.m ephi.ru/event/275/contributions/3301/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3301/ END:VEVENT BEGIN:VEVENT SUMMARY:Modified spatial distrubution of dark matter as solution to gamma- ray problem of positron anomaly explanation DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3397@cern.ch DESCRIPTION:Speakers: Manzura Rakhimova (NRNU MEPhI)\nAn excess of positro ns in cosmic rays (CR) called positron anomaly was discovered more than de cade ago and still stays an open-ended question in astrophysics. There is a big group of models involving annihilating or decaying Dark Matter (DM) purported to explain the anomaly. But they face an obstacle in the form of gamma-rays. Simple DM models tend to overproduce gamma-rays\, leading to contradiction with isotropic gamma-ray background (IGRB). This work is ded icated to attempt to alleviate the contradiction by modifying the spatial distribution of DM. It’s obtained that such an approach allows improving anomaly data fit considerably.\n\nhttps://indico.particle.mephi.ru/event/ 275/contributions/3397/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3397/ END:VEVENT BEGIN:VEVENT SUMMARY:Renyi Entropy and Corrections On Newton's law of Gravity and Fried mann Equations DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3300@cern.ch DESCRIPTION:Speakers: Seyed Hamidreza Fazlollahi ()\nThe Jacobson have sho wn that Gravity force is not fundamental phenomenon and one able to consid er it as emergent one. According to his idea\, gravity is only the first l aw of thermodynamics of space-time. The next step in this direction was fo rwarded by Verlinde whom argued that gravity is not fundamental force and can be interpreted as the entropic force due to changing of entropy associ ated with the information on the holographic screen. Hence\, he derived Ne wton's law of gravity\, the Poisson equation and Einstein's field equation s. In Jacobson and Verlinde studies entropy plays the key role. Therefore\ , modifying entropy expression yields some deviations in Newton’s law of gravity and Evolution of Universe. In this context\, by using Renyi entro py expression and with aid of Verlinde argument\, Newton’s gravity equat ion and corrections on Friedmann equations are reconsidered. Also\, the se cond law of thermodynamics of whole Universe is investigated.\n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3300/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3300/ END:VEVENT BEGIN:VEVENT SUMMARY:Scaling properties of anisotropic flow at Nuclotron-NICA energies DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3412@cern.ch DESCRIPTION:Speakers: Peter Parfenov (NRNU MEPhI)\nA central goal of curre nt relativistic heavy-ion experiments is to study the properties of the ho t and dense QCD matter. Anisotropic flow measurements of identified partic les play an essential role in the constraining transport coefficients of t he strongly-coupled Quark Gluon Plasma (sQGP) and studies providing better insight to the QGP phase diagramm.\nWe report on the results of the recen t measurements of anisotropic flow using state-of-the-art models\, provide detailed comparison with existing experimental data and discuss them usin g different scaling relations for azimuthal anisotropy for energies that w ill be available at Nuclotron and NICA facilities.\n\nhttps://indico.parti cle.mephi.ru/event/275/contributions/3412/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3412/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for $^{9\,10}$He heavy isotopes in stopped pion absorption reaction by $^{14}$C DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3327@cern.ch DESCRIPTION:Speakers: Tatiana Leonova (NRNU MEPhI)\nLevel structure of hea vy helium isotope $^{9\,10}$He is studied in the reactions of stopped pion absorption $^{14}$C($\\pi^-$\, p$^4$Нe )X\, $^{14}$C($\\pi^-$\,d$^3$Нe) X\, $^{14}$C($\\pi^-$\,p$^3$Нe)X. The experiment was carried out at the L ANL with a two-arm semiconductor spectrometer. The ground and excited sta tes of $^9$He have been observed. The E$_x \\approx$ 11 MeV state of $^9$ He has been observed for the first time. The indication of the existence of the E$_r \\approx$ 7 MeV resonant state of $^{10}$He was obtained. Para meters of excited states have been compared with data of other experimenta l and theoretical works.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3327/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3327/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of the spectators charge distributions in event generators f or the BM@N experiment DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3298@cern.ch DESCRIPTION:Speakers: Elizaveta Zherebtsova ()\nTo study physical observab les in the BM@N experiment\, it is extremely important to have a model tha t can describe the data well. The BM@N experiment will have a new collecti on of the collision data for Xe+CsI@3.9 AGeV. The Scintillation Wall is on e of the detectors of the BM@N experiment installed in front of the forwar d hadron calorimeter and designed to measure the distributions of charged fragments. Modeling the charge distributions of fragments on this detector will make it possible to compare them with experimental distributions and also use them to determine centrality. The comparison of the charge distr ibutions in the Scintillation Wall using DCM-SMM\, PHQMD-SACA and PHQMD-MS T generators has been done.\n\nhttps://indico.particle.mephi.ru/event/275/ contributions/3298/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3298/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation studies of the Lead-Polysterene SPACAL prototype for th e LHCb ECAL Upgrade II DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3365@cern.ch DESCRIPTION:Speakers: Evgenii Shmanin (NUST MISIS)\nThe LHC Phase II Upgra de foreseen for 2026 implies multi fold increasing of number of collisions and radiation levels compared to the present LHC conditions. The electrom agnetic calorimeter (ECAL) of LHCb experiment requires modernisation due t o enlarged radiation doses and high occupancy: replacing shashlik-type mo dules for the central part by spaghetti-type (SPACAL) calorimeter. Current paper presents results of the material optimisation (fibres diameter and distance between their centres (pitch)\, absorber material) for lead-polys tyrene SPACAL module performed with GEANT4 simulation to satisfy the LHCb requirements in term of energy resolution.\n\nhttps://indico.particle.meph i.ru/event/275/contributions/3365/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3365/ END:VEVENT BEGIN:VEVENT SUMMARY:Noble Element Simulation Technique DTSTART;VALUE=DATE-TIME:20221129T141000Z DTEND;VALUE=DATE-TIME:20221129T161000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3364@cern.ch DESCRIPTION:Speakers: Ekaterina Kozlova (NRNU MEPhI)\nThe Noble Element Si mulation Technique (NEST) is a C++ package with optional GEANT4 integratio n and a Python equivalent (nestpy) developed for liquid noble gases experi ments. It is capable of accurate predictions of scintillation and ionizati on signal from different particles for a large range of drift fields in li quid xenon and argon and is widely used by leading dark matter and neutrin o experiments. Using a combination of empirical and first principle method s\, NEST models the intrinsic physics of noble detectors while maintaining a user-friendly format. Applicability\, adaptability and future plans of NEST will be discussed.\n\nhttps://indico.particle.mephi.ru/event/275/cont ributions/3364/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy URL:https://indico.particle.mephi.ru/event/275/contributions/3364/ END:VEVENT BEGIN:VEVENT SUMMARY:Thulium-containing bolometer for solar axion resonant absorption s earch DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3391@cern.ch DESCRIPTION:Speakers: ilia drachnev (PNPI NRC KI)\nAxion is a hypothetical pseudoscalar Nambu-Goldstone boson that was introduced as an extension to the Standard Model intended to solve the strong CP problem. \nIt also cou ld be a possible solution for a series of other fundamental physics proble ms such as the the dark matter or photon ultratransparency of the Universe .\nAs the least model-dependent axion interaction is its interaction with a nuclei\, the most promising reaction for axion search is the resonant ab sorption. \n\nIf an axion exists\, the sun would be a strong source of axi on radiation\, produced by mainly the so-called ABC reactions (Atomic rec ombination and deexcitation\, Bremsstrahlung and Compton). These reactions produce axions with energies in the keV range and thus their detection th rough resonant absorption requires a nuclide with low-energy magnetic type gamma-transition. An optimal nuclide fulfilling these requirements is $^{ 169}$Tm that has an M1 transition with energy of 8.41 keV with magnetic ty pe transition fraction that could be estimated close to unity. \n\nIn this work we describe a novice technique of axion search with Tm-containing cr ystal $\\rm{Tm}_3\\rm{Al}_5\\rm{O}_{12}$\, a garnet that could be operated in the bolometric regime. A small sample of this crystal of 8.18 g has be en already applied for axion search producing a new limit of the coupling constants: $|g_{A\\gamma} (g^0_{AN} + g^3{AN} )| \\leq 1.44 \\times 10^{ −14} GeV^{−1}$ and $|g_{Ae}( (g^0_{AN} + g^3{AN} )| \\leq 2.81 \\times 10^{−16}$.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3391/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3391/ END:VEVENT BEGIN:VEVENT SUMMARY:On thermal equilibrium of relativistic electron beam DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3373@cern.ch DESCRIPTION:Speakers: Helen Barminova (NRNU MEPhI\; RUDN University)\nTo s tudy the conditions of thermal equilibrium of relativistic electron beam ( REB) is important for numerous fundamental and applied tasks of accelerato r physics and space physics as well as physical electronics. In our report the analytical study of the dynamics of neutralized relativistic electron beam is presented. The beam parameters are found which correspond to equi librium propagation of a beam characterized by arbitrary 4D-phase configur ation in a long-pulse approximation. The results obtained allow to shape t he equilibrium REB as well as to predict the behaviour of a beam in a wide range of initial beam parameters.\n\nhttps://indico.particle.mephi.ru/eve nt/275/contributions/3373/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3373/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for EC/EC-capture of $^{58}$Ni on excited states of $^{58} $Fe. DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3339@cern.ch DESCRIPTION:Speakers: Vladimir Kazalov (INR RAS)\nDouble electron-capture (EC/EC) of $^{58}$Ni on excited states of $^{58}$Fe is investigated at Bak san neutrino observatory INR RAS in DULB-4900 laboratory (4900 m w. e.) us ing the ultralow-background HPGe detector with a sensitive volume of 200 c m$^3$ ($\\sim1$ kg mass) and a natural nickel sample of $\\sim68$% $^{58}$ Ni with a mass of $\\sim 6$ kg. The detector is surrounded by low-backgrou nd shield consist of 180 mm oxygen-free copper\, 150 mm lead\, 1 mm cadmiu m and 80 mm polyethylene. After preliminarily analysis of the experimental data accumulated over 3200 hours\, the experimental limits are obtained f or the 2νEC/EC decay of $^{58}$Ni to the 2$^{+}_{1}$\, 811 keV and 2$^{+} _{2}$\, 1675 keV excited states of $^{58}$Fe. The limits are T$_{1/2}$ (EC /EC\, 0 → 2$^{+}_{1}$) > 4$\\cdot$10$^{21}$ yr\, and T$_{1/2}$ (EC/EC\, 0 → 2$^{+}_{2}$) > 7$\\cdot$10$^{21}$ yr. At the same time\, the sensit ivity of the experimental setup for one year of measurements to the proces ses mentioned above is: S (EC/EC\, 0 → 2$^{+}_{1}$) = 2$\\cdot$10$^{22} $ yr\, and S (EC/EC\, 0 → 2$^{+}_{2}$) = 1.3$\\cdot$10$^{22}$ yr. All li mits are at 90% CL.\n\nhttps://indico.particle.mephi.ru/event/275/contribu tions/3339/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3339/ END:VEVENT BEGIN:VEVENT SUMMARY:Application of thin organic scintillator to study fragmentation of 12C nuclei under the action of relativistic muons DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3341@cern.ch DESCRIPTION:Speakers: A Zaitsev (JINR)\nThe availability of muons in a wi de energy range makes it possible to offer them experiments on topical pro blems of nuclear physics. Answering questions of a fundamental nature\, th ey can be used in research on geology and radiation biology related to the impact of muons of cosmic origin. It is possible to use relativistic muon s in the muon torch and in the secondary particle channel of the U-70 acce lerator.\nOf primary interest is the possibility of fully detecting short- range α-particles produced in nuclear fragmentation events under the acti on of muons. The reaction µ + 12С → µ' + 3α is the starting point in the study of nuclear fragmentation under the action of muons. The presenc e of the 12C isotope in nuclear emission and organic scintillators makes i t possible to use these materials as active targets.\nTraditionally\, radi oactive decay of uranium\, thorium and their daughter radionuclides is ind icated as a source of helium\, and analysis for the presence of helium ser ves to search for their deposits. At the same time\, the reaction µ + 12 С → µ' + 3α can serve as a mechanism for generating helium in natural gas fields.\nThus\, it is necessary to measure the cross section for the reaction µ + 12С → µ' + 3α in the widest possible energy range on an active carbon-containing target\, which combines detection of beam partic les and triples of α-particles. In this regard\, the following is propose d. A muon beam with an energy of 7 GeV is used\, which can pass after one or two beam absorbers in the HYPERON channel. Muons are directed to a thin scintillator\, which registers ionization losses\, starting from the mini mally ionizing particles of the beam and up to 3α stars. The background a nd development of this experiment are presented.\n\nhttps://indico.particl e.mephi.ru/event/275/contributions/3341/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3341/ END:VEVENT BEGIN:VEVENT SUMMARY:SOLITONS IN SOLUTIONS OF HYDRODYNAMICS EQUATIONS IN DESCRIBING COL LISIONS AND OSCILLATIONS OF ATOMIC NUCLEI DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3335@cern.ch DESCRIPTION:Speakers: Alexander D'yachenko (Petersburg State Transport Uni versity)\nA.T. D’yachenko$^{1\,2}$\, M.S. Abu-Khasan$^{2}$\n\n$^{1}$ Nat ional Research Center “Kurchatov Institute” B.P. Konstantinov Petersbu rg Nuclear Physics Institute\, Gatchina\, Russia:\n\n$^{2}$ Emperor Alexan der I Petersburg State Transport University\, St. Petersburg\, Russia\n\nW ithin the framework of our approach\, we have found an analytical solution of the equations of hydrodynamics in the soliton approximation for the co llision of layers in the one-dimensional and two-dimensional cases. The co ntraction stage\, the expansion stage\, and the expansion stage are consid ered within the framework of a single formula for layers with energies on the order of ten MeV per nucleon. Such a reduction of solutions of hydrody namic equations to soliton solutions has not been considered before. \nThe introduction of dispersion into the effective forces and into the pressur e does not violate the concept of the formation of a hot spot. The introdu ction of additional dimensions does not violate this representation. Here we develop an approach to the approximate analytical solution of these equ ations\, both in the case of weak nonlinearity\, by reducing them to the K orteweg-de Vries equations\, and in the case of large-amplitude perturbati ons\, using soliton-like solutions. \nOur generalization to the two-dimens ional case leads to the idea of the formation at the stage of expansion of a rarefied region-bubble\, the search for which is the subject of long-st anding research. And the approach itself is of independent interest and ca n be used in other areas of physics and technology when calculating the no nlinear dynamics of oscillations of complex systems. In our works [1-4]\, it was shown that the local thermodynamic equilibrium in the process of co llisions of heavy ions is not established immediately. \nThe nonequilibriu m approach to hydrodynamic equations makes it possible to describe experim ental data better than the equation of state corresponding to traditional hydrodynamics\, which assumes the establishment of local thermodynamic equ ilibrium.\n\n 1.A.T. D'yachenko\, K.A. Gridnev\, W. Greiner\, J. Phys. G40 \, 085101 (2013)\n\n 2.A.T. D'yachenko\, I.A. Mitropolsky\, Phys. Atom. Nu cl. 83\, 558 (2020).\n\n 3.A.T. D'yachenko\, I.A Mitropolsky\, Bull. Russ. Acad. sci. Phys. 84\, 391 (2020).\n\n 4.A.T. D'yachenko\, I.A.Mitropolsky \, Bull. Russ. Acad. sci. Phys. 86 \, 962 (2022).\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3335/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3335/ END:VEVENT BEGIN:VEVENT SUMMARY:Software and hardware complex for calibrating optical modules of C herenkov neutrino telescopes DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3363@cern.ch DESCRIPTION:Speakers: Tatyana Karetnikova ()\, Semyon Khokhlov (National R esearch Nuclear University MEPhI)\nIn recent decades\, Cherenkov water (ic e) telescopes such as IceCube\, Baikal-GVD and KM3Net have been actively d eveloped for research in the field of neutrino physics and astrophysics. O ptical modules are the main detecting elements of such neutrino telescopes .\nCalibration of optical modules of different neutrino telescopes under t he same conditions is one of the important experimental problems. Such a c alibration can be carried out at the Experimental complex NEVOD. Scientifi c installations of the complex make it possible to identify tracks of sing le near-vertical and near-horizontal muons\, as well as to detect events w ith large energy deposits and to study the response of the optical module being tested to these events.\nIn the report\, we discuss the software and hardware complex for calibrating optical modules of Cherenkov neutrino te lescopes at the Experimental complex NEVOD\, as well as the possibility of its implementation for studying the characteristics of the Baikal-GVD opt ical module.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3 363/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3363/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of the dynamics of a beam with elliptical cross-section i n a solenoid DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3374@cern.ch DESCRIPTION:Speakers: Helen Barminova (NRNU MEPhI\, RUDN University)\nThe behavior of a beam with elliptical cross-section and arbitrary partial emi ttances in a solenoid is studied analytically. Such analysis is needed for various tasks of accelerator physics\, for example\, the formation of the beam extracted from the ion source and for the Low Energy Beam Transport (LEBT) design. The peculiarities of the coupling of the beam oscillations in longitudinal magnetic field are investigated depending on the input bea m parameters and the characteristics of the magnetic field\, the modified KV-model being used. The results of the calculations are presented which d escribe the evolution of the beam parameters.\n\nhttps://indico.particle.m ephi.ru/event/275/contributions/3374/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3374/ END:VEVENT BEGIN:VEVENT SUMMARY:Sea acoustic neutrino detector which placed at small depth DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3406@cern.ch DESCRIPTION:Speakers: Sergey Karaevsky (Institut for Nuclear Research of R ussian Academy of Sciences)\nPlacement of the hydroacoustic antenna-detect or for ultrahigh energy neutrino\ndirectly below the underwater acoustic c hannel gives several important advantages.\nThey simplifies the creation of the phased hydroacoustic array and signal processing for registration o f such neutrinos. High temperature of the Mediterranean in comparison with other seas improves detector sensitivity. Placement of the acoustic chann el at small depth simplifies the underwater equipment design.\n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3406/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3406/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of self-focused electron beam in a pyroelectric acceler ator DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3366@cern.ch DESCRIPTION:Speakers: Pavel Shapovalov (National Research Nuclear Universi ty “MEPhI”\, Moscow\, Russia)\nWhen the temperature of the pyroelectri c single crystal changes\, X-ray generation is possible. To obtain the abo ve effect\, it is necessary to change the temperature of the crystal in va cuum (pressure on the order of several mTorr). Under such conditions\, an electric field arises between the grounded target and the crystal surface\ , which causes the field emission of electrons from the crystal surface [1 ]. This opens up prospects for using pyroelectric crystals as compact elec tron accelerators. An accelerator based on a lithium tantalate $(LiTaO_3)$ crystal with a surface charge of 1200 nC is capable of generating electro n beams with an energy of about 20 keV.\n \nIt was shown in [2] that due t o the non-uniform charge distribution on the pyrocrystal surface\, the ele ctric field lines converge at one point. This feature allows us to suggest the possibility of the presence of the self-focusing effect in the pyroac celerator. This hypothesis was tested using numerical simulation based on the finite element method.\n \nIt was assumed that the emission occurs fro m the surface of the crystal. The simulation results confirmed the self-fo cusing hypothesis. The dependence of the maximum electron energy on the em ission point and the focal length on the radius on the crystal surface are obtained. The electron spectrum obtained is consistent with the experimen t.\n \nThe simulation made it possible to elucidate the radiation characte ristics\, which are difficult to find experimentally. The model was verifi ed. The trajectories of electrons and their energies agree well with exper iment and theory. The theoretically predicted non-uniform charge distribut ion and self-focusing are confirmed. Simulated monoenergetic electron flow in a pyroelectric accelerator can be used for calibrations of different p article detectors facilities.\n \nThe work was supported by the grant from the Russian Science Foundation (project №21-72-00006).\n \n[1] Kubankin A. S. et al. Optimal speed of temperature change of a crystal in a pyroe lectric X-ray radiation source // AIP Advances. 2018.\n\n[2] Ghaderi R.\, Davani F. A. Determination of surface electric charge profile in pyroelect ric crystals // Applied Physics Letters. 2014.\n\nhttps://indico.particle. mephi.ru/event/275/contributions/3366/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3366/ END:VEVENT BEGIN:VEVENT SUMMARY:ANALYSIS OF ISOTOPE COMPOSITION IN A SAMPLE OF HIGH-TEMPERATURE SU PERCONDUCTORS (HTS) AFTER THEIR IRRADIATION WITH PROTONS WITH AN ENERGY OF 660 MeV DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3342@cern.ch DESCRIPTION:Speakers: Vladimir Il'ich Stegaylov (Россия г.Дубн а ОИЯИ сотрудник)\nThis report discusses one of the stages o f work on the creation of artificial pinning centers in superconducting ta pes\, for the possible creation of a series of superconducting magnets bas ed on them\, operating at temperatures up to 65 K.\nThe report describes t he experimental setup and the results of irradiation of the HTS samples in the neutron-proton field of the lead converter\, analyzes the gamma spect rum measured with HPGe detectors\, and determines the composition of isoto pes of the samples after irradiation. The yields of isotopes were determin ed\, allowing us to quantify the percentage of the neutron component in th e flux passing through the sample in order to optimize the conditions for obtaining the matrix of defects necessary for the emergence of stable vort ex pinning in the electromagnetic field of the superconductor. ( I = 1 0 13 p+/sm2/s ) * 9000 s\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3342/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3342/ END:VEVENT BEGIN:VEVENT SUMMARY:Charged and Neutral Pion polarizability measurement in the CPP/NPP experiments. DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3336@cern.ch DESCRIPTION:Speakers: Ilya Larin ( National Research Center (NRC) “Kurch atov Institute\,” Moscow\, 117218\, Russia.)\, Victor V Tarasov ( Nation al Research Center (NRC) “Kurchatov Institute\,” Moscow\, 117218\, Rus sia.)\nPolarizability is a fundamental particle property. Measurement of p ion\npolarizability values allows checking strict ChPT prediction. Charged and\nneutral pi-mesons polarizability will be extracted from the CPP and NPP\nexperimental data using Primakoff pair production cross-section on nu clear target. The CPP/NPP experiment run at TJNAF Hall-D was conducted in the summer of 2022 and utilized a polarized photon beam with an energy ran ge of 4.5-6.0 GeV\nand the lead-208 target on the upgraded GlueX experimen tal setup.\n\nIn this talk\, we will discuss existing experiments that mea sured charged\npion polarizability\, review CPP/NPP experimental data\, fu ture plans on\ncross-section and polarizability of the charged and neutral pions (for the\nfirst time) extraction.\n\nhttps://indico.particle.mephi. ru/event/275/contributions/3336/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3336/ END:VEVENT BEGIN:VEVENT SUMMARY:Three particle muon-electron bound systems in the variational app roach DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3333@cern.ch DESCRIPTION:Speakers: Alexey Eskin ()\nWithin the framework of the variati onal method in quantum electrodynamics\, the energy levels of bound states of three particles muon-electron-nucleus with light nuclei are studied. T he calculation uses a Gaussian basis for trial wave functions. The electro n and muon Lamb shifts in such three-particle systems are calculated.\n\nh ttps://indico.particle.mephi.ru/event/275/contributions/3333/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3333/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing of charmonium and exotics in hadron and heavy ion collisio ns DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3415@cern.ch DESCRIPTION:Speakers: Mikhail Barabanov (JINR)\nThe spectroscopy of higher lying charmonium states together with exotic mesons with masses above the $2\\\,m(D)$ open charm threshold has been full of surprises and remains p oorly understood [1]. It is a good testing tool for the theories of strong interactions\, including: QCD in both the perturbative and non-perturbati ve regimes\, LQCD\, potential models and phenomenological models. The expe riments with antiproton-proton annihilation\, proton-proton and proton-nuc lei collisions are well suited for a comprehensive spectroscopy program\, in particular\, the spectros-copy of chamonuim and exotics states.\nThe cu rrently most compelling theoretical descriptions of the mysterious XYZ mes ons attrib-ute them to hybrid structure with a tightly bound diquark [2] o r tetraquark core [3 - 5] that strongly couples to S-wave molecular like s tructures. In this picture\, the production of a XYZ states in high energy hadron collisions and its decays into light hadron plus char-monum final states proceed via the core component of the meson\, while decays to pairs of open-charmed mesons proceed via the component.\nThese ideas have been applied with some success to the XYZ states [2]\, where a detailed calcu-l ation finds a core component that is only above 5% of the time with the co mponent (mostly) accounting for the rest. In this picture these states are compose of three rather disparate components: a small charmonium-like cor e with rrms 150$ fm [8].\nThe near threshold production experiments in $\ \sqrt{s}_{pN}\\sim 8$ GeV energy range with proton-proton and proton-nucle i collisions with$\\sqrt{s}_{pN}$ up to 26 GeV and luminosity up to $10^{3 2}cm^{-2}s^{-1}$ planned at NICA may be well suited to test this picture f or the X(3872) and other exotic XYZ mesons [9]. Their current experimental status together with hidden charm tetraquark candidates and present simul ations what we might expect from A-dependence of XYZ mesons in proton-prot on and proton-nuclei collisions are summarized.\n\nReferences\n\n[1] S. Ol sen\, Front. Phys. 10 101401 (2015)\n\n[2] S. Takeuchi\, K. Shimizu\, M. T akizawa\, Progr. Theor. Exp. Phys. 2015\, 079203 (2015)\n\n[3] A. Esposito \, A. Pilloni\, A.D. Poloza\, arXiv:1603.07667[hep-ph]\n\n[4] M.Barabanov\ , A.Vodopyanov\, S.Olsen\, A. Zinchenko\, Phys. Atom. Nuc. 79\, 1\, 126 (2 016)\n\n[5] M. Barabanov\, A. Vodopyanov\, Study of Charmonium-Like Struct ure in Hadron and Heavy Ion Collisions\, Physics of Atomic Nuclei\, V. 84\ , N. 3\, (2021) 373–376\n\n[6] Isgur\, Phys. Rev. D 32\, 189 (1985)\n\n[ 7] K. Olive et al. (PDG)\, Chin. Phys. C 38\, 090001 (2014)\n\n[8] The wid th of X(3872) is experimentally constrained to be Г X(3872) \n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3415/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3415/ END:VEVENT BEGIN:VEVENT SUMMARY:Various aspects of QCD and 2 color QCD phase diagrams with non-zer o chiral imbalance DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3349@cern.ch DESCRIPTION:Speakers: Roman Zhokhov (IHEP Protvino\, IZMIRAN Troitsk)\nPha se structure of dense quark matter with chiral and isospin imbalance is co nsidered in the framework of effective models. There has been considered a s two color as well as three color QCD. It was shown that chiral imbalance has several rather peculiar properties such as being universal catalyzer\ ,\ni. e. it catalyzes all the considered symmetry breaking patterns in the system\, including the diquark condensation phenomenon (color superconduc tivity). Duality properties found earlier have been considered in both cas e.\nIt was shown that the phenomenon of color superconductivity\, which do minates at\nhigh baryon density\, does not suppress the previously known e ffect that the chiral the imbalance leads to charged pion condensation in a dense quark medium\, i.e. quark medium with nonzero baryon density.\nIt was investigated how the chiral imbalance affects the phase of the color\n superconductivity. It has been shown that chiral imbalance leads to the ap pearance phases of color superconductivity in dense quark matter at lower\ nvalues ​​of baryon chemical potentials than in a chirally symmetric m edium. It\nmay have some interesting implications for collision experiment s\nheavy ions with medium energies (at moderate energy heavy ion collision s).\n\nBased on:\nPhys.Rev.D 106 (2022) 4\, 045008\nJHEP 06 (2020) 148\nEu r.Phys.J.C 80 (2020) 10\, 995\n\nhttps://indico.particle.mephi.ru/event/27 5/contributions/3349/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3349/ END:VEVENT BEGIN:VEVENT SUMMARY:Possibility of investigations of primary cosmic rays by means of c oordinate-tracking detector on the Earth's surface DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3384@cern.ch DESCRIPTION:Speakers: egor zadeba (nrnu mephi)\nThe study of primary cosmi c rays is usually carried out by either direct measurements by means of sa tellite detectors or indirect measurements by ground-based detectors of se condary particles generated in extensive air showers (EAS). The main types of ground-based installations are scintillator or Cherenkov detectors tha t register light from all particles that give ionization in their working volume. Such detectors are distributed over large area and the amplitude a nd time of their response give a direction and a size of EAS. Such setup i s implemented in experimental complex NEVOD in MEPhI. It is based on scint illator detectors and covers an area of 104 m2.\nClassical EAS setup can b e supplemented by coordinate-tracking detector that can separate particle tracks and measure their number and direction. The new coordinate-tracking detector ProtoTREK based on multiwire drift chambers is developed in MEPh I. It has an area of 13 m2 and can measure up to 15 particles per m2. Such setup can act like a valuable additional detector of primary cosmic rays. Monte-Carlo simulation shows that coordinate-tracking detector can give a n independent information on EAS. The first comparison of ProtoTREK and NE VOD-EAS response shows a compliance. This new approach to EAS investigatio ns is described.\n\nhttps://indico.particle.mephi.ru/event/275/contributio ns/3384/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3384/ END:VEVENT BEGIN:VEVENT SUMMARY:The characteristics of fast scintillation detectors of time of fli ght and anticoincidence system of space-based gamma-ray telescope GAMMA-40 0 with silicon photomultipliers readout DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3367@cern.ch DESCRIPTION:Speakers: Andrey Arkhangelskiy (National Research Nuclear Univ ersity MEPhI (Moscow Engineering Physics Institute))\nScientific project G AMMA-400 relates to the new generation of space observatories intended to perform a search for signatures of dark matter in the cosmic gamma emissio n\, measurements of characteristics of diffuse gamma-ray emission and gamm a-rays from the Sun during periods of solar activity\, gamma-ray bursts\, extended and point gamma-ray sources\, electron/positron and cosmic-ray nu clei fluxes up to TeV energy region by means of GAMMA-400 space-based gamm a-ray telescope represents the core of the scientific complex. The main re sults obtained using ~300 MeV positron beam of synchrotron C 25P “PAKHRA ” of Lebedev Physical Institute with prototypes of time of flight and an ticoincidence system of gamma-ray telescope are presented. The amplitude r esolution\, time resolution and charged particles detection efficiency are adduced. The comparison of using both «slow» and «fast» outputs of si licon photomultipliers of prototype scintillation detectors sensors is fea tured.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3367/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3367/ END:VEVENT BEGIN:VEVENT SUMMARY:Linearity of a scintillation crystals response DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3362@cern.ch DESCRIPTION:Speakers: Gayar Salakhutdinov (National Research Nuclear Unive rsity “MEPhI”)\, Peter Naumov (National Research Nuclear University “MEPhI”)\nThe results of the study of the specific light output from t he energy of X-rays and gamma quanta in the range from 1.5 to 662 keV for scintillation crystals NaI (Tl)\, CsI (Na)\, CsI (Tl)\, Bi4Ge3O12\, CdWO4\ , ZnWO4\, Y3Al5O12: Ce\, CaF2 (Eu)\, LSO\, YAlO3: Ce. The obtained depende nces have a nonlinear form with pronounced minima in the region of the K a nd L edges of the absorption of the elements that make up the scintillator s.\nWhen X-ray and gamma quanta are recorded in the energy range from 1 to hundreds of keV\, a strong change in the specific ionization losses of th e produced photoelectrons dE / dx occurs in the scintillation crystal\, th ere are K and L jumps in the crystal absorption cross section. All this ha s a significant effect on the light output of scintillators. The possibili ty of reducing the nonlinearity of the response of scintillators during th e detection of gamma radiation is shown.\n\nhttps://indico.particle.mephi. ru/event/275/contributions/3362/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3362/ END:VEVENT BEGIN:VEVENT SUMMARY:Transverse momentum distributions and pt-Nch correlations in Exten ded Multipomeron Exchange Model DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3346@cern.ch DESCRIPTION:Speakers: Aleksandra Marova (Saint Petersburg State University )\nThe multipomeron exchange model was considered earlier in papers [1 – 5]. Within the framework of this model\, it was possible to successfully describe the charged multiplicity (Nch)\, mean transverse momentum (pt) an d pt-Nch correlations in pp and pp¯ collisions over a wide energy range ( from ISR to LHC). It allowed also to reproduce the growth of the yields of strange\, multi-strange and charm particles as a function of multiplicity for pp\, p-Pb and Pb-Pb collisions at the LHC energy. For this\, in parti cular\, the general idea of the Schwinger mechanism of particle production from a string [6] was used\, where the transverse momentum distribution o f charged particles from a string has a Gaussian form\, and in case of str ing overlap the effective string tension was related to the number of stri ngs. However\, experimental data show that the pt-spectra of particles pro duced in pp collisions are better described by the thermal model. To solve this problem\, we introduced the thermal-like pt distribution function wh ich can be considered as averaging out over string tension fluctuations [7 ]. We calculated pt-spectra and pt-Nch correlations functions for pp-coll isions at the LHC energy in extended multipomeron exchange model and compa red the results with the experimental data. \n\nThe research was supporte d by the SPbSU project\, No 93025435.\n\n1. Armesto N.\, Derkach D.A.\, Fe ofilov G.A. p(t)-multiplicity correlations in a multi-Pomeron-exchange mod el with string collective effects. Phys. Atom. Nucl. 2008\, 71\, 2087–20 95.\n2. Bodnia E.\, Derkach D.\, Feofilov G.\, Kovalenko V.\, Puchkov A. M ulti-pomeron exchange model for pp and pp¯ collisions at ultra-high energ y. PoS QFTHEP2013 2013\, 60.\n3. Kovalenko V.N.\, Puchkov A.M.\, Feofilov G.A. Production of strange particles in a multi-pomeron exchange model. B ull. Russ. Acad. Sci. Phys. 2016\, 80\, 966–969.\n4. Feofilov G.\, Koval enko V.\, Puchkov A. Correlation between heavy flavour production and mult iplicity in pp and p-Pb collisions at high energy in the multi-pomeron exc hange model. EPJ Web Conf. 2018\, 171\, 18003.\n5. Kovalenko V.\, Feofilov G.\, Puchkov A.\, Valiev F. Multipomeron Model with Collective Effects fo r High-Energy Hadron Collisions. Universe 2022\, 8\, 246. https://doi.org/ 10.3390/universe8040246\n6. Schwinger J.S. On gauge invariance and vacuum polarization. Phys. Rev. 1951\, 82\, 664–679.\n7. Bialas A. Fluctuations of the string tension and transverse mass distribution. Phys. Lett. B 199 9\, 466\, 301–304.\n\nhttps://indico.particle.mephi.ru/event/275/contrib utions/3346/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3346/ END:VEVENT BEGIN:VEVENT SUMMARY:Fundamental and applied physics with reactor neutrinos DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3351@cern.ch DESCRIPTION:Speakers: Sergey Rozov (JINR)\nNeutrino continue to be a sourc e of scientific discoveries in nuclear physics\, elementary particle physi cs\, and cosmology. Two main conclusions of numerous experiments performed over past decades based on a variety of methods and with different source s of neutrinos are: i) neutrinos have nonzero mass\, and ii) there is sign ificant mixing between individual neutrino mass states. Despite these majo r breakthroughs\, further experimental studies based on new experimental m ethods and using unexplored processes are urgently needed to go beyond the Standard Model\, which\, as we know from cosmology and particle physics\, must be extended.\n\nThe history of neutrino physics is continuously link ed with the reactors. It all started with the reactor based experiment [1] \, which first confirmed the existence of neutrinos. It is well known\, th at in a modern type WWER1000 reactors\, an average of 200 MeV of energy is released per fission. At the same time\, each fission is accomplished wit h emission on average of ~ 6 electron antineutrinos. Thus\, a modern react or\, for example one at Kalinin NPP\, emits ~ $6 \\times 1020$ electron an tineutrinos per second\, having a continuous energy spectrum with maximum energies up to ~ 10 MeV. Therefore\, even at a distance of tens of meters from the reactor\, it remains the most powerful available source of antine utrinos\, two orders of magnitude larger than the neutrino flux from the S un. Given that neutrinos are only weakly coupled with other particles\, a huge reactor antineutrino flux is often the only way to study the properti es of neutrinos.\n\nRussian science has a fruitful history of conducting e xperiments with reactor neutrinos at Rovno (Rivne NPP)\, Krasnoyarsk and U domlya (Kalinin NPP) (works leading by L.A. Mikaelyan\, A.A. Borovoy\, V.P . Martemyanov and others). The talk will provide a general overview of Rus sian and some international neutrino experiments at reactors. The focus wi ll be on experiments with the latest types of semiconductor\, cryogenic an d scintillation detectors. It will be demonstrated that by developing of f undamental tasks of neutrino detection\, the possibility of applied use of neutrinos for remote monitoring of reactors is provided.\n\nKeywords: neu trino\, fundamental problems of modern physics\, detectors.\n\nBibliograph y\n\n1. Reines F.\, Cowan C.L. // Phys. Rev. 1953. V.90. P.49\n\nhttps://i ndico.particle.mephi.ru/event/275/contributions/3351/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3351/ END:VEVENT BEGIN:VEVENT SUMMARY:Charge radii and magnetic moments of isotopes near N=126 neutron shell. DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3328@cern.ch DESCRIPTION:Speakers: Alexander Khudov ( MEPHI )\nI.N. Borzov 1\,2\, S.V. Tolokonnikov1\,3\, S.S. Pankratov 1\, A.V. Khudov4\n\n1 National Research Centre “Kurchatov Institute”\, Moscow\, Russia.\n\n2Bogolubov Laborato ry of Theoretical Physics\, Joint Institute of Nuclear Research\, Dubna\, Russia.\n\n3 Moscow Institute of Physics and Technology (National Research University)\, Dolgoprudny\, Russia.\n\n4 National Research Nuclear Univer sity MEPHI\, Moscow\, Russia.\n\nE-mail: Borzov_IN@nrcki.ru\, cc: ibor48@m ail.ru\n\n\nIn the recent experiments at RILIS-CERN\, the high precision m easurements of nuclear charge radii and magnetic moments have been perform ed for heavy isotopes in the region of N=126. We will present our results of simultaneous analysis of the ground state characteristics in terms of t he Fayans energy density functional DF3-a [1-3] newly tuned by variation o f the previously unused volume (isovector) parameter h-2 [4]. \n\nAddition al constraint is implemented from the upper bound of the giant dipole reso nance energy in 208Pb. Also an extended set of restrictions on the symmetr y energy and its slope at saturation density L(ρ0) for symmetric nuclear matter is applied. They were obtained from the data on nuclear masses\, re sults of ab initio calculations with N3LO\, the neutron skin (ΔRnp) value s derived from PREXP-II\, CREX experiments\, augmented by the observationa l data on the radii of neutron stars and on gravitational waves registrati on (see [5]). \n\nThe systematic calculations of the charge radii and magn etic moments are performed for Pt to Bi isotopes and compared with the lat est data [1-3] in the vicinity of neutron shell N=126. \n\n Supported by t he grant of Russian Scientific Foundation (RSF 21-12-00061). \n\n1. A. Bar zakh et.al.\, Phys.Rev. Lett.127\, 192501 (2021).\n2. T. Day Godrache et.a l.\, Phys.Rev. C106\, 034326 (2022).\n3. Y. Нirayama et.al Phys.Rev. C106 \, 034326 (2022). \n4. I.N. Borzov\, S.V. Tolokonnikov\, in report on the IPCAA-2022.\n5. J. Lattimer in "The Modern Physics of Compact Stars and Re lativistic \n Gravity”\, Yrevan\, Armenia\, 2021. \n\nhttps://indico.particle.mephi.ru/event/275/contributions/3328/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3328/ END:VEVENT BEGIN:VEVENT SUMMARY:On stable exponential cosmological type solutions with three fa ctor spaces in Einstein-Gauss-Bonnet model with a Lambda-term DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3306@cern.ch DESCRIPTION:Speakers: Vladimir Ivashchuk (Center for Gravitation\, VNIIMS) \nWe study a $D$-dimensional Einstein-Gauss-Bonnet model which includes the Gauss-Bonnet term\, the cosmological term $\\Lambda$ and two non-zer o constants: $\\alpha_1$ and $\\alpha_2$. Under imposing the metric to be diagonal one\, we find cosmological type solutions with exponential d ependence of three scale factors in a variable $u$\, governed by three no n-coinciding Hubble-like parameters: $H \\neq 0$\, $h_1$ and $h_2$\, obeyi ng $m H + k_1 h_1 + k_2 h_2 \\neq 0$\, corresponding to factor spaces of dimensions $m > 1$\, $k_1 > 1$ and $k_2 > 1$\, respectively\, and depend ing upon sign parameter $\\varepsilon = \\pm 1$\, where $\\varepsilon = 1$ corresponds to cosmological case and $\\varepsilon = - 1$ - to static one). We deal with two cases: i) $m 0$ and $\\alpha \\Lambda > 0$ satisf ies certain (upper and lower) bounds. The solutions are defined up to solu tions of certain polynomial master equation of order four (or less) whic h may be solved in radicals. In case ii) explicit solutions are presented . In both cases we single out stable and non-stable solutions as $u \\to \\pm \\infty$. The case $H = 0$ is also considered.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3306/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3306/ END:VEVENT BEGIN:VEVENT SUMMARY:The F(R) inflationary models with $R^{3/2}$-term DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3305@cern.ch DESCRIPTION:Speakers: Sergey Vernov (Skobeltsyn Institute of Nuclear Physi cs\, Lomonosov Moscow State University)\nWe study the one-parameter genera lizations of the Starobinsky model of inflation\, which obey all observati onal constraints on the inflationary parameters. Our models are connected to the original Starobinsky model via continuously changing an additional parameter. Modifying the Starobinsky $R+R^2$ inflationary model by adding an $R^{3/2}$-term\, we find that the tensor-to-scalar ratio significantly increases with raising the parameter in front of that term. The talk is b ased on the paper V.R. Ivanov\, S.V. Ketov\, E.O. Pozdeeva and S.Yu. Verno v\, JCAP 03 (2022) 058 and recent investigations.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3305/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3305/ END:VEVENT BEGIN:VEVENT SUMMARY:The dual model of inertial particles and interaction fields can be falsified by calibrated energy transport DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3304@cern.ch DESCRIPTION:Speakers: Igor Bulyzhenkov ()\nNewtonian dualism of localized material bodies with delocalized fields of interaction in non-material spa ce contradicts the monistic all-unity of material space in Russian Cosmism . Its Cartesian physics with the Umov vector for energy transports in the material continuum predicts a monotonous decrease in the transmission of i nformation and light power under a rarefaction of the cosmic medium-space. On the contrary\, the Newtonian worldview of particles and their remote o r field interactions predicts a monotonous increase in light power and inf ormation transfer rate in rarefied regions of the space-arena due to a dec rease in scattering. A calibrated laser power transfer in variable vacuum in laboratory tubes or in the upper atmosphere can falsify (by precision m easurements) the particle-field dualism in the Standard Model of Physics i n favor of monistic field matter.\n\nhttps://indico.particle.mephi.ru/even t/275/contributions/3304/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3304/ END:VEVENT BEGIN:VEVENT SUMMARY:What Machine Learning can do for a Focusing Aerogel Detectors DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3378@cern.ch DESCRIPTION:Speakers: Foma Shipilov ()\, Fedor Ratnikov (NRU Higher School of Economics)\nParticle identification at the Super Charm-Tau factory exp eriment will be provided by a Focusing multilayer Aerogel\nring imaging Ch erenkov detector FARICH. Due to hardware constraints the detector captures a great amount of noise\nwhich must be mitigated to reduce both a data fl ow and further storage space.\nIn this presentation we present our approa ch to filtering signal hits. The approach is inspired by object detection\ ntechniques for computer vision. Several ML based approaches to the FARICH reconstruction problem in different settings\nare also discussed.\n\nhttp s://indico.particle.mephi.ru/event/275/contributions/3378/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3378/ END:VEVENT BEGIN:VEVENT SUMMARY:Evidence of large potassium abundance in the Earth from new Borexi no data DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3352@cern.ch DESCRIPTION:Speakers: Valery Sinev (INR RAS)\nInclusion in Analysis of Bor exino data K-40 antineutrino spectrum makes the fit better than without. B orexino data can install an upper limit on potassium abundance \n\nhttps:/ /indico.particle.mephi.ru/event/275/contributions/3352/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3352/ END:VEVENT BEGIN:VEVENT SUMMARY:News of Quark-Gluon Model: baryonium DM in stratosphere and proton spectrum from the SMBHs. DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3350@cern.ch DESCRIPTION:Speakers: Olga Piskounova (LPI\, Lebedev Physics Institute\, M oscow)\nDark Matter particles that are constructed from proton-antiproton String Junctions (SJ\,antiSJ) was already announced at ICPPA18. Essencial specifics in spectra of baryons in p-p interaction are leading to new impl ications for cosmic ray physics and astrophysics. VHE event in stratospher e has shown that the pattern of astroparticle collision differs from nucle us-nucleus interaction. It can be heavy baryonium DM particle that reached the Eath. \nThe form of proton spectrum in VHE p-p collisions has triplex -Pomeron peak at highest energy. The similar enhancements have been measur ed in cosmic spectra of gamma-photons and neutrinos. All these make us con vinced that spectra of cosmic particles are formed in the first UHE proton collision near SMBH. Calculations have been resulted in the value of init ial energy of protons of the order of $10^{12}$ GeV.\n\nhttps://indico.par ticle.mephi.ru/event/275/contributions/3350/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3350/ END:VEVENT BEGIN:VEVENT SUMMARY:PREVENTION OF GEO-EFFECTIVE PHENOMENA ARISING FROM SOLAR ACTIVITY DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3402@cern.ch DESCRIPTION:Speakers: Vitaly Yurov (NRNU MEPhI)\nThe article considers geo -effective phenomena that arose in near-Earth outer space and on Earth dur ing 23 and 24 cycles of solar activity. The results of the SWPC NOAA data processing showed that about 90% of proton events with an energy of $p_T > 100$ MeV and 100% of terrestrial increases (GLE) are associated with sola r flares with a capacity of more than M5.0. Methods of operational prevent ion of high-energy proton flows in near-Earth orbit are considered. As ind icators\, it is proposed to jointly monitor soft X-rays in the range of 0. 1- 0.8 nm and protons with $p_T > 100$ MeV. Characteristics of associated active regions (AR) on solar hemisphere are considered for prediction of G LE. The types of the most effective ARs and their peculiarities of develop ment before a geo-effective solar flare are identified. One-day GLE foreca st procedure for AO monitoring was proposed and its effectiveness and succ ess were evaluated.\n\nhttps://indico.particle.mephi.ru/event/275/contribu tions/3402/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3402/ END:VEVENT BEGIN:VEVENT SUMMARY:State-of-art imaging in nuclear track emulsion DTSTART;VALUE=DATE-TIME:20221201T100000Z DTEND;VALUE=DATE-TIME:20221201T101500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3331@cern.ch DESCRIPTION:Speakers: Irina Zarubina (JINR)\nIn spite of the fact that nuc lear track emulsion (NTE) was developed more half a century ago\, it still remains a universal and cost-efficient detector. The application of NTE i s especially well grounded where tracks of nuclear particles cannot be rec onstructed using electronic detectors. At the JINR Nuclotron the BECQUEREL experiment [1] is performed a program of irradiation of NTE stacks in the beams of relativistic isotopes of beryllium\, boron\, carbon and nitrogen \, including radioactive ones to study their cluster structure. Сharge-to pology distributions of final states have an individual character appearin g to be some kind of a signature of the isotope under study. The NTE techn ique allows one to observe the 3D images of few-body ensembles originated in peripheral collisions and explore the fragmentation of the relativistic nuclei down to the most peripheral interactions - nuclear “white” sta rs [2]. \nThe competitive character of the novel NTE is proved in measurem ents of slow α particles and heavy ions (summarized in [3]). The possibil ity of α spectrometry was verified and the atom drift effect is establish ed in measurement of decays of 60 MeV 8He nuclei implanted in NTE [4]. Cor relations of α particles in splitting of 12C nuclei by 14.1 MeV neutrons [5] as well as 7Li and 4He nuclei produced in 10B breakup by thermal neutr ons in boron-enriched NTE [6] are studied. NTE samples were irradiated wit h slow Kr and Xe ions [7\,8]. Surface irradiations of NTE samples were per formed with automatic movement of the 252Cf source [9]. \nRecently\, sampl es of reproduced NTE were also irradiated with 2.5 and 160 GeV muons (star ted in [10]). Such irradiation allows one to study few-body fragmentation under the action of an electromagnetic probe [11]. Multiphoton exchange or virtual photon–meson transformations can serve as the fragmentation mec hanisms. It was established that the breakup of carbon nuclei into trios o f α particles has a nuclear diffraction rather than electromagnetic chara cter. Thus\, the connection of high energy and low energy nuclear physics appears.\nClassic observations of fundamental importance presented in “T he Study of Elementary Particles by the Photographic Method” by C. H. Po well\, P. H. Fowler and D. H. Perkins can serve as a model of clarity in o ur time. Our research is implemented in keeping with this tradition by sta te-of-art means. The rich collection of videos and images of the nuclear f ew-body processes gathered at the Web site is presented [1]. In terms of a pplications they are relevant for the development of advanced systems of a utomatic search for nuclear interactions\, as well as for university educa tion.\n\nReferences\n\n1. The BECQUEREL Project WEB site: http://becquerel .jinr.ru/\n\n2. http://becquerel.jinr.ru/movies/movies.html\n\n3. P. I. Za rubin “Recent applications of nuclear track emulsion technique” Phys. At. Nucl.\, 2016\, 79\, 1525-1535\; DOI: 10.1134/S1063778816130093.\nhttps ://link.springer.com/article/10.1134/S1063778816130093\n\n4. http://becque rel.jinr.ru/miscellanea/8He/8He.html\n\n5. http://becquerel.jinr.ru/miscel lanea/DVIN/dvin11.html\n\n6. http://becquerel.jinr.ru/miscellanea/IBR-2/IB R-2.html\n\n7. http://becquerel.jinr.ru/miscellanea/IC-100/IC-100.html\n\n 8. http://becquerel.jinr.ru/miscellanea/U400M/U400M.html\n\n9. http://becq uerel.jinr.ru/miscellanea/Prague-dosimetry/Prague-dosimetry.html\n\n10. D. A. Artemenkov et al. “Study of nuclear multifragmentation induced by ul trarelativistic μ-mesons in nuclear track emulsion” J. Phys.: Conf. Ser . 675 022022.\nhttp://iopscience.iop.org/article/10.1088/1742-6596/675/2/0 22022\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3331/ LOCATION:Hotel Intourist Kolomenskoye 4* Hall URL:https://indico.particle.mephi.ru/event/275/contributions/3331/ END:VEVENT BEGIN:VEVENT SUMMARY:Recent heavy-ion results by CMS experiment DTSTART;VALUE=DATE-TIME:20221202T094500Z DTEND;VALUE=DATE-TIME:20221202T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3294@cern.ch DESCRIPTION:Speakers: Sergey Petrushanko (M.V.Lomonosov Moscow State Unive rsity\, Skobeltsyn Institute of Nuclear Physics)\nSelection of the very re cent results by the Compact Muon Solenoid (CMS) Collaboration on heavy-ion physics in relativistic collisions at LHC energies will be presented.\n\n https://indico.particle.mephi.ru/event/275/contributions/3294/ LOCATION:Hotel Intourist Kolomenskoye 4* Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/275/contributions/3294/ END:VEVENT BEGIN:VEVENT SUMMARY:Testbeam measurements and realistic simulation for straw drift tub es DTSTART;VALUE=DATE-TIME:20221202T094500Z DTEND;VALUE=DATE-TIME:20221202T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3230@cern.ch DESCRIPTION:Speakers: Andrei Zelenov ()\nTrackers build of straw drift tub es are a perfect solution for precise track measurements in High Energy an d Neutrino Physics experiments operating at low and moderate event rate. S traw Trackers will play crucial roles in such future detectors as Near-Det ector Complex of the DUNE experiment\, Hidden Sector Detector of the SHiP experiment and the SPD detector. Performance requirements on a Tracker and its readout electronics are defined by the Physics goals. Proper evaluati on of the designed Tracker performance demands realistic simulation and st udies with tracker prototypes. Preliminary results of the muon beam measur ements done with straw tube chambers at the SPS test beam line are compare d to predictions obtained with Garfield simulation package interfaced to L TSpice program for electronics circuit modelling.\n\nhttps://indico.partic le.mephi.ru/event/275/contributions/3230/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3230/ END:VEVENT BEGIN:VEVENT SUMMARY:Pasta phases in neutron stars: Extented Thomas-Fermi vs Compressib le Liquid Drop approaches DTSTART;VALUE=DATE-TIME:20221201T151500Z DTEND;VALUE=DATE-TIME:20221201T153000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3120@cern.ch DESCRIPTION:Speakers: Andrey Chugunov (Ioffe Institute)\nThe mantle -- a l ayer of nonspherical (pasta-like) nuclear shapes -- can exist in neutron s tars and play an important role in their dynamics and evolution. We analyz e accuracy of the Compressible Liquid Drop Model (CLDM)\, based on the the rmodynamically consistent description of the surface properties calculated for the two-phase plane interface for given energy-density functional (fo r numerical illustration\, we apply Skyrme-type functional SLy4). For this aim we compare CLDM results with direct calculation of the pasta phases w ithin Extended Thomas-Fermi (ETF) method. Our ETF calculations found a sig nificant mantle layer\, consisting of the pasta phases in cylindrical form (both normal and inverse phases\, aka spaghetti and bucatini). Meanwhile\ , within the applied CLDM framework\, which neglects curvature corrections \, the inverse phases are absent while the spaghetti phase was found to be energetically favourable only in the small density range prior to crust-c ore transition. On the other hand\, the recent CLDM of Dinh Thi et al. 202 1\, which\, on the opposite\, accounts for curvature term predicts pasta p hases in better agreement with the ETF\, however this model neglects therm odynamically required effect of neutron adsorption and employs additional data to describe the surface properties. This fact highlights the importan ce of the curvature effects in analysis of the pasta properties within CLD Ms.\nThis research was funded by Russian Science Foundation\, grant number 22-12-00048.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/ 3120/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3120/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for low mass WIMP dark matter with DarkSide DTSTART;VALUE=DATE-TIME:20221201T161500Z DTEND;VALUE=DATE-TIME:20221201T163000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3118@cern.ch DESCRIPTION:Speakers: Igor Machulin (NRNU MEPHI\, NRC "Kurchatov Institute ")\nDark matter lighter than 10 GeV/c2 encompasses a promising range of ca ndidates. The new analysis of the entire dataset acquired with a low-radio activity argon target by the DarkSide-50 experiment at LNGS is presented. The new analysis benefits from more accurate calibration of the detector r esponse\, improved background model\, and better determination of systemat ic uncertainties. A conceptual design for a new detector\, DarkSide-LowMas s\, is proposed\, based on the DarkSide-50 detector results\, optimized fo r a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. The studies show that DarkSide-LowMass can achieve sensitivity to light dark matter down to the solar neutrino floor for GeV-scale masses.\n \nhttps://indico.particle.mephi.ru/event/275/contributions/3118/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3118/ END:VEVENT BEGIN:VEVENT SUMMARY:Towards a possible discovery of dark photons DTSTART;VALUE=DATE-TIME:20221201T150000Z DTEND;VALUE=DATE-TIME:20221201T151500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3117@cern.ch DESCRIPTION:Speakers: Anatoly Kopylov ()\nThe present status of the experi ment PHELEX on the search for dark photons with a multi-cathode counter is presented. The improved upper limit for a constant of kinetic mixing has been obtained. The importance of measuring the diurnal variations of count rate to prove that dark photons be really observed is shown. First result s of diurnal variations have been obtained. New design of multi-cathode co unter is presented. The results obtained are discussed and the task for a further study is formulated.\n\nhttps://indico.particle.mephi.ru/event/275 /contributions/3117/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3117/ END:VEVENT BEGIN:VEVENT SUMMARY:Positronium decay in a strong magnetic field DTSTART;VALUE=DATE-TIME:20221201T160000Z DTEND;VALUE=DATE-TIME:20221201T161500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3116@cern.ch DESCRIPTION:Speakers: Andrew Koshelkin (National Research Nuclear Universi ty - MEPhI)\nBased on the relativistic constraint technique[1] for the D irac equation in the two-particles problem[2] positronium states in a st rong uniform magnetic field are studied. The width of the singlet positro nium state in such conditions is obtained in the explicit form. It is show n that the magnetic field sufficiently increases the decay width\, compari ng with the case of a free positronium. The positronium collapse[3] in the extremely strong magnetic fields is discussed.\n\n[1] A. M. Dirac\, Lectu res on Quantum Mechanics (Yeshiva\nUniversity\, Belfer Graduate School of Science\, New York\,\n1964).\n\n[2]H.W.Crater\, P. van Alstine\, Phys. Rev .D \, v.36\, 3007 (1987).\n\n[3]A.E.Shabad\, V.V. Usov\, Phys. Rev. Lett .\, v.96\, 180401 (2006).\n\nhttps://indico.particle.mephi.ru/event/275/co ntributions/3116/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3116/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon puzzle: possible approach to the solution DTSTART;VALUE=DATE-TIME:20221201T154500Z DTEND;VALUE=DATE-TIME:20221201T160000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3115@cern.ch DESCRIPTION:Speakers: Roman Nikolaenko ()\nThe muon puzzle has been one of the most intriguing problems in cosmic ray physics over the past few year s. The contradiction between the experimental data and simulation results suggests the presence of physical processes that go beyond the framework o f contemporary hadronic interaction models. One of these approaches is bas ed on the hypothesis that strongly polarized blobs of quark-gluon plasma w hich decay to heavy particles are formed in non-central nucleus-nucleus co llisions. In this work\, the influence of the production of these heavy pa rticles on the EAS development\, μ/e-ratio and measured shower energy is considered.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/31 15/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3115/ END:VEVENT BEGIN:VEVENT SUMMARY:Radiation transfer in a strong magnetic field with resonance effec ts taken into account DTSTART;VALUE=DATE-TIME:20221201T153000Z DTEND;VALUE=DATE-TIME:20221201T154500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3113@cern.ch DESCRIPTION:Speakers: Alexey Yarkov (P.G. Demidov Yaroslavl State Universi ty)\nThe solution of the kinetic equation for finding the distribution fun ction of photons of two possible polarizations in an equilibrium e+e- plas ma in a relatively strong magnetic field in the cold plasma approximation and taking into account\nresonance on a virtual electron is considered. Us ing the Laplace transform and sum of the distribution function in terms of Legendre polynomials\, the problem is reduced to a system of differential equations\, the coefficients of which can be easily calculated numericall y.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/3113/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3113/ END:VEVENT BEGIN:VEVENT SUMMARY:The double Compton process in a strongly magnetized plasma DTSTART;VALUE=DATE-TIME:20221201T143000Z DTEND;VALUE=DATE-TIME:20221201T144500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3112@cern.ch DESCRIPTION:Speakers: Dmitry Rumyantsev ()\nThe process of double Compton scattering\, $e \\gamma \\to e \\gamma \\gamma$\, \nin strongly magnetize d charge-asymmetric\, cold electron plasma is considered.\nThe amplitude o f the process is obtained and \nselection rules for photon polarizations are found.\nIt is sh own that in such a plasma the process of double Compton scattering will be \nefficient mechanism for the production of polarized photons.\n As a resu lt\, it could lead to the modification in the mechanism of \nthe spectra f ormation of SGR and AXP.\n\nhttps://indico.particle.mephi.ru/event/275/con tributions/3112/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3112/ END:VEVENT BEGIN:VEVENT SUMMARY:MHD simulation in the solar corona to obtain conditions for the ac celeration of cosmic rays during solar flares DTSTART;VALUE=DATE-TIME:20221201T073000Z DTEND;VALUE=DATE-TIME:20221201T074500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3101@cern.ch DESCRIPTION:Speakers: Alexander Podgorny (Lebedev Physical Institute RAS)\ nSolar cosmic rays are generated during the primordial energy release in s olar flares. This explosive process takes place in the solar corona above the active region at altitudes of 15 000 to 70 000 km. It represents the f ast release of the magnetic field energy of the current sheet\, which is f ormed near a singular magnetic field line under the influence of disturban ces propagating from the solar surface. Solar cosmic rays appear as a resu lt of acceleration of charged particles\, mainly protons\, by an inductive electric field in the current sheet\, equal to the field $\\bf{E} = \\bf{ V} \\times \\bf{B} / c$ near the current sheet. To study the mechanism of solar flares\, the process of formation of a current sheet and the accumul ation of energy in its magnetic field for each specific flare\, and to obt ain the possibility of improving the prognosis of solar flares based on an understanding of their physical mechanism\, it is necessary to carry out magnetohydrodynamic (MHD) simulation of a flare situation in the solar cor ona above a real active region. The electric and magnetic fields obtained by MHD simulation above a real active region at the site of the primordial flare energy release and near it are necessary for studying the generatio n of solar cosmic rays. The acceleration of charged particles and the poss ibility of their exit from the acceleration region must be studied by calc ulating the trajectories of charged particles in electric and magnetic fie lds obtained by MHD simulation. The first results of studying the accelera tion of charged particles were obtained by calculating trajectories in ele ctric and magnetic fields\, found by MHD simulation above the active regio n under simplified conditions. \n\nWhen setting the conditions for MHD sim ulation\, no assumptions were made about the physical mechanism of the sol ar flare\; the boundary conditions were taken from observations. Experienc e has shown that the physical mechanism of a solar flare can be studied by MHD simulation only if the calculation starts a few days before the appea rance of flares\, when magnetic energy for the flare has not yet accumulat ed in the corona. For MHD simulation in the real scale of time\, a signifi cant computational speed is required\, which is achieved only through the use of parallel computing on supercomputers. Parallelization of calculatio ns was carried out by computational threads on graphic cards (GPU). \n\nTh e MHD simulation above a real active region is continued\, the results of which were presented at previous ICPPA conferences. The conditions for set ting the problem of MHD simulation are refined\, the developed method for the numerical solution of the equations of magnetohydrodynamics is improve d. Simulation above the active region of AO 10365 in real time showed the appearance of a numerical instability near the boundary of the computation al region\, which has time to develop over a fairly long (about 3 days) ti me interval\, despite use of the finite-difference scheme which is develop ed for our purposes. The scheme is absolutely implicit and conservative wi th respect to the magnetic flux. Methods for stabilizing emerging numerica l instabilities were developed\, which made it possible to solve the probl em for relatively large usual and magnetic viscosities (usual and magnetic Reynolds numbers are $Re=10^4$\; $Re_m=3 \\times 10^5$). These methods ma de it possible to partially solve the problem of stabilization of instabil ities for relatively low usual and magnetic viscosities ($Re = 10^7$\; $Re _m = 10^9$)\, at which the perturbation propagating from the solar surface is weakly suppressed by the viscosity\, which allows the formation of suf ficiently powerful current sheets with high magnetic energy\, accumulated for flare. The results obtained made it possible to understand how to furt her develop methods for stabilizing numerical instabilities. \n\nMHD simul ations showed the appearance of current sheets in the vicinity of X-type s ingular magnetic field lines. The configuration of the magnetic field abov e the active region is so complicated that the positions of singular lines and current sheets can only be found using a specially designed graphic s earch system. A divergent magnetic field can be superimposed on the X-type magnetic field configuration near the singular line. The divergent magnet ic field may dominate\, so that the resulting configuration will not resem ble an X-type field. However\, due to the presence of an X-type configurat ion in the superimposed fields\, MHD simulations show the formation of a c urrent sheet. At the sites of the flares on May 26 and 27\, 2003 above AR 10365\, the X-type configuration is strongly distorted by the diverging ma gnetic field. Perhaps for this reason\, the solar flares on May 26 and 27\ , 2003 were not very strong. The coincidence of the position of the flare thermal X-ray source with the places on singular lines where the current s heet was formed confirms the solar flare mechanism based on the accumulati on of energy in the magnetic field of the current sheet.\n\nhttps://indico .particle.mephi.ru/event/275/contributions/3101/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3101/ END:VEVENT BEGIN:VEVENT SUMMARY:Highlights from the Telescope Array experiment DTSTART;VALUE=DATE-TIME:20221201T083000Z DTEND;VALUE=DATE-TIME:20221201T084500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3103@cern.ch DESCRIPTION:Speakers: Mikhail Kuznetsov (INR\, Moscow)\nThe Telescope Arra y (TA) is the largest cosmic ray observatory in the Northern Hemisphere. I t is designed to measure the properties of cosmic rays over a wide range o f energies. TA with it's low energy extension (TALE) observe cosmic ray in duced extensive air showers between 2x10^15 and 2x10^20eV in hybrid mode u sing multiple instruments\, including an array of scintillator detectors a t the Earth's surface and telescopes to measure the fluorescence and Ceren kov light. The statistics at the highest energies are being enhanced with the ongoing construction of the TAx4 experiment which will quadruple the s urface area of the detector. We review the present status of the experimen ts and most recent physics results on the cosmic ray anisotropy\, mass com position and energy spectrum. Notable highlights include a new feature in the energy spectrum at about 10^19.2 eV\, a new clustering of events in th eir arrival directions above this energy and an indirect estimation of hea vy mass composition at energies higher than 10^20 eV.\n\nhttps://indico.pa rticle.mephi.ru/event/275/contributions/3103/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3103/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of hydrometeors on relativistic runaway electron avalanc hes DTSTART;VALUE=DATE-TIME:20221201T080000Z DTEND;VALUE=DATE-TIME:20221201T081500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3104@cern.ch DESCRIPTION:Speakers: Daria Zemlianskaya ()\nPreviously\, all studies in t his area of atmospheric physics\, namely\, avalanches of relativistic runa way electrons (RREA)\, were carried out without taking into account the pr esence of hydrometeors in thunderclouds\, which could seriously affect the results and their correspondence to actually observed natural phenomena. Such as TGF(Terrestrial Gamma-ray Flash) and TGE(Thunderstorm Ground Enhan cements)\, the cause of which is still not clear\; which are observed in a stroparticle experiments\, for example\, on the Fermi Gamma-ray Space Tele scope. This talk takes into account hydrometeors in clouds. In this work\, the distribution of RREA was simulated in GEANT4 was simulated taking int o account various concentrations of ice particles. Modeling showed that ac counting for the presence of hydrometeors cannot be simplified and reduced to a change in the main substance.\nTwo methods are considered - modeling of volumetric hydrometeors as separate modeling objects and as a simple c hange in the components of a whole substance (adding water to air with a c orresponding density). These methods show completely different results.\nM odeling by volumes of hydrometeors shows a decrease in the length of the a valanche by 20 %\, on the other hand\, when modeling with a modified mater ial\, the length changed only by 1 %. This suddenly proves that hydrometeo rs should be taken into account in research\, as they can significantly ch ange the growth length of an avalanche in real thunderstorm condition.\n\n https://indico.particle.mephi.ru/event/275/contributions/3104/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3104/ END:VEVENT BEGIN:VEVENT SUMMARY:The TAIGA - an hybrid detector complex in Tunka valley for astropa rticle physics\, cosmic ray physics and gamma-ray astronomy. DTSTART;VALUE=DATE-TIME:20221201T081500Z DTEND;VALUE=DATE-TIME:20221201T083000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3105@cern.ch DESCRIPTION:Speakers: Nikolay Budnev (Irkutsk State University)\nThe physi cal motivations and performance of the TAIGA (Tunka Advanced Instrument fo r cosmic ray physics and Gamma Astronomy) project are presented. The TAIGA observatory addresses ground-based gamma-ray astronomy at energies from a few TeV to several PeV\, as well as cosmic ray physics from 100 TeV to se veral EeV and astroparticle physics. The pilot TAIGA-1 complex locates in the Tunka valley\, ~50 km West from the southern tip of the lake Baikal. It includes integrating air Cherenkov TAIGA-HiSCORE array with 120 wide-an gle optical stations distributed over on area 1.1 square kilometer about a nd three the 4-m class Imaging Atmospheric Cherenkov Telescopes of the TA IGA-IACT array. The latter array has a shape of triangle with side lengths of about 300m\, 400m and 500m. The integral sensitivity of the 1 km$^2$ T AIGA-1 detector is about $2\,5 × 10^{-13}$ TeV cm$^{-2}$ sec$^{-1}$ for d etection of $E\\ge100$ TeV gamma-rays in 300 hours of source observations. The combination of the wide angle Cherenkov array and IACTs could offer a cost effective-way to build a really large (up to 10 km$^2$) array for ve ry high energy gamma-ray astronomy. The reconstruction of a given EAS ener gy\, incoming direction and the core position\, based on the TAIGA-HiSCORE data\, allows one to increase the distance between the relatively expensi ve IACTs up to 600-800 m. These\, together with the surface and undergroun d electron/Muon detectors will be used for selection of gamma-ray induced EAS. Present status of the project\, together with the current array descr iption and the first experimental results and plans for the future will be reported.\n\nhttps://indico.particle.mephi.ru/event/275/contributions/310 5/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3105/ END:VEVENT BEGIN:VEVENT SUMMARY:Muon puzzle in cosmic rays according to NEVOD-DECOR experiment dat a DTSTART;VALUE=DATE-TIME:20221201T090000Z DTEND;VALUE=DATE-TIME:20221201T091500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3106@cern.ch DESCRIPTION:Speakers: Aleksei Bogdanov (National Research Nuclear Universi ty MEPhI (Moscow Engineering Physics Institute))\nIn a number of experimen ts on the study of ultrahigh-energy cosmic rays\, an excess of muons in ex tensive air showers in comparison with calculations performed within moder n (post-LHC) models of hadronic interactions is observed. An analysis of t he NEVOD-DECOR data over a long period of time indicates an increase in th e excess of muon bundles with increasing energy of primary cosmic ray part icles\, so that at ~ 10^18 eV the intensity is consistent with the expecte d one only under the assumption of an extremely heavy mass composition. Th e key to explaining the excess of muons may be the study of the energy cha racteristics of muon bundles\, that are conducted in the NEVOD-DECOR exper iment. Recently\, estimates of the average muon energy in the bundles were obtained and its increase compared to the results of calculations at ener gies above 10^17 eV was found. Thus\, the solution of the muon puzzle may require major changes to the existing models of hadron interactions.\n\nht tps://indico.particle.mephi.ru/event/275/contributions/3106/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3106/ END:VEVENT BEGIN:VEVENT SUMMARY:About an anomalous event registered by the TUS space detector DTSTART;VALUE=DATE-TIME:20221201T093000Z DTEND;VALUE=DATE-TIME:20221201T094500Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3107@cern.ch DESCRIPTION:Speakers: Alexandr Blinov (Joint Institute of Nuclear Research )\nIn this work\, anomalous events recorded by the TUS space detector are considered. In this research we try to give interpretation of this anomalo us events\, which\, mostly\, are caused by the thunderstorm activity. Diff erent interpretations of this events like gamma-ray bursts\, synchrotron r adiation in the geomagnetic field of electrons/positrons in cosmic rays\, an ascending extensive air shower\, as well as their hardware nature was c onsidered as their possible sources. An analysis of these events may for t he first time confirm the connection between thunderstorm activity and ext ensive air shower.\n\nhttps://indico.particle.mephi.ru/event/275/contribut ions/3107/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3107/ END:VEVENT BEGIN:VEVENT SUMMARY:The modulation of positively and negatively charged particles at 1 GV rigidity during 23-24 solar cycles DTSTART;VALUE=DATE-TIME:20221201T094500Z DTEND;VALUE=DATE-TIME:20221201T100000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3108@cern.ch DESCRIPTION:Speakers: Vladimir Mikhailov (NRNU MEPHI)\, Pavel Mukhin (NRNU MEPhI)\nObservations of monthly electron and positron fluxes made from 2 006 by PAMELA experiment continue investigation of the relative modulatio n of positively and negatively charged particles.\nThe comparison of the electron fluxes with proton and positron fluxes measured at about 1 GV in 23th and 24th solar cycles is presented.\n\nhttps://indico.particle.mephi .ru/event/275/contributions/3108/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3108/ END:VEVENT BEGIN:VEVENT SUMMARY:Multicomponent studies of extensive air showers detected by the in stallations of the Experimental complex NEVOD DTSTART;VALUE=DATE-TIME:20221201T084500Z DTEND;VALUE=DATE-TIME:20221201T090000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3109@cern.ch DESCRIPTION:Speakers: Semyon Khokhlov (National Research Nuclear Universit y MEPhI)\nThe complementary approach to the investigations of extensive ai r showers (EAS) is very promising for conducting their multicomponent stud ies. In this approach\, information about one or more EAS components\, whi ch is insignificant from the point of view of independent analysis\, can b e added to data on other components providing more accurate determination of the parameters of the extensive air shower and the primary particle.\nS uch studies and an approach have been implemented at the Experimental comp lex NEVOD (MEPhI\, Moscow)\, which includes installations capable of detec ting electron-photon\, hadronic and muon components of extensive air showe rs by various methods.\nAll installations of the Experimental complex NEVO D are combined by a global time synchronization system\, which allows link ing of events detected by each installation to the global time with an acc uracy of 10 ns. For the joint analysis of information from all installatio ns of the complex\, a unified database of experimental data is being devel oped.\nIn this report\, we present examples of events detected by the inst allations and detectors of the complex\, discuss EAS characteristics and t he results of joint analysis of experimental and simulated data on various air-shower components.\n\nhttps://indico.particle.mephi.ru/event/275/cont ributions/3109/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3109/ END:VEVENT BEGIN:VEVENT SUMMARY:Detection of TeV emission from the Crab Nebula using the first two IACTs in TAIGA in stand-alone and stereo modes of observation DTSTART;VALUE=DATE-TIME:20221201T091500Z DTEND;VALUE=DATE-TIME:20221201T093000Z DTSTAMP;VALUE=DATE-TIME:20260314T053259Z UID:indico-contribution-275-3110@cern.ch DESCRIPTION:Speakers: Pavel Volchugov (SINP MSU)\nTwo installations curren tly operating as part of the TAIGA Astrophysical Complex [1]: TAIGA-HiSCOR E [2] -120 wide-angle Cherenkov stations on an area of 1 $km^2$ and TAIGA- IACT[3] - 3 IACTs\, are playing the most important role in research in the field of very high-energy gamma-ray astronomy. The large area and unique methodological capabilities of the complex allow us to hope for new and in teresting results.\n\nThe report focuses on the analysis of date of the Cr ab Nebula observation in stand-alone and stereo modes of observation. The techniques for selecting gamma-like events and approaches for the energy r econstruction in these modes of observation are discussed.\n\nBased on the date of the first IACT\, for 150 hours of observation\, the excess of gam ma-rays at the significance level of 12σ (618 events) was obtained. From 36 hours of operation of two telescopes in stereo mode excess of gamma ray s at the significance level 5σ was obtained.\nThe energy spectra of gamma -rays in the energy range 4-80 TeV reconstructed both by stand-alone and s tereo modes are presented.\n \n1. L. A. Kuzmichev et al. Cosmic ray study at the astrophysical complex TAIGA: Results and plans // Physics of Atomic Nuclei. — 2021. — Vol. 84\, no. 6. — P. 966–974.\n2. O. A. Gress et al. The wide-aperture gamma-ray telescope TAIGA-HiSCORE in the Tunka Va lley: Design\, composition and commissioning\, Nucl. Instrum. Meth. A 845 (2017) 367.\n3. N. B. Lubsandorzhiev Camera of the first TAIGA-IACT: const ruction and calibration\, PoS ICRC2017. 757\n\nhttps://indico.particle.mep hi.ru/event/275/contributions/3110/ LOCATION:Hotel Intourist Kolomenskoye 4* Moskvorechye 2 URL:https://indico.particle.mephi.ru/event/275/contributions/3110/ END:VEVENT END:VCALENDAR