BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Annihilation of lepton and hadron interactions DTSTART;VALUE=DATE-TIME:20241023T081000Z DTEND;VALUE=DATE-TIME:20241023T083000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4394@cern.ch DESCRIPTION:Speakers: Elena Kokoulina (JINR)\nPhysicists carry out experim ents at the modern accelerators with constantly increasing energy to find out new phenomena and approaches to understanding of internal hadron struc ture and also answer many questions emerged before them. These experiments agree well on the modern theory of strong interactions\, quantum chromody namics\, but there are some results in cosmological observations that can not be explained in this theory and require new approaches and experiments . In that way the increasing of measurement precision and rare event regis tration\, building of other theoretical models and just to name a few can help. Also we think that more detailed analysis of the known interactions can make more clear structure of matter.\nMultiparticle production is one of such studies in high energy physics.\nWe offer the single view to des cribe annihilation processes of leptons and hadrons. It is based on both Q CD quark-gluon jets and phenomenological description of hadronization.\n\n https://indico.particle.mephi.ru/event/436/contributions/4394/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4394/ END:VEVENT BEGIN:VEVENT SUMMARY:Estimation of contribution of gaseous tritium source rear wall to tritium beta-spectrum in search for sterile neutrinos by Troitsk nu-mass e xperiment DTSTART;VALUE=DATE-TIME:20241023T075500Z DTEND;VALUE=DATE-TIME:20241023T081000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4392@cern.ch DESCRIPTION:Speakers: Vladislav Pantuev (Institute for Nuclear Research Ru ssian Academy of Sciences)\nThe goal of the Troitsk nu-mass experiment is a search for sterile neutrinos in the tritium beta decay. The decay electr ons are produced in the windowless gaseous tritium source\, WGTS. The magn etic field in the source is formed by a set of solenoids. Electrons produc ed at large pitch angles to the magnet axis are trapped. Electrons at smal l angles can leave the WGTS for the spectrometer or in the opposite direct ion\, for the rear wall. The spot of electrons escaping from the WGTS to t he rear wall increases in diameter due to the fringe field. These electro ns may scatter on the vacuum pipe and at some combination of scattered ang le and final energy\, may return to the WGTS and reach the spectrometer an d detector. This contamination modifies the original tritium spectrum. We calculate the scattered electron distribution in GEANT4 framework and then apply energy and angular cuts to select the electrons that can reach the detector. The relative contribution of such electrons is 4-5 orders of mag nitude less at the edge of the original spectrum at 17-18.5 keV\, but reac hes 2% at 11 keV. The experimental spectrum fits well with a correction fo r this contribution. The study of the rear wall contribution\, its magneti c field and material configuration is critical for the TRISTAN project\, t he follower of the KATRIN experiment.\n\nhttps://indico.particle.mephi.ru/ event/436/contributions/4392/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4392/ END:VEVENT BEGIN:VEVENT SUMMARY:Dark SHINE --- Search for Light Dark Matter at the SHINE facility in Shanghai DTSTART;VALUE=DATE-TIME:20241023T074000Z DTEND;VALUE=DATE-TIME:20241023T075500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4393@cern.ch DESCRIPTION:Speakers: Danning Liu (Tsung-Dao Lee Institute\, Shanghai Jiao Tong University)\, Danning Liu (TDLI\, SJTU)\nDark SHINE is a fixed-targe t experiment initiative at SHINE (Shanghai high repetition rate XFEL and e xtreme light facility\, being the 1st hard X-ray FEL in China) under const ruction targeting completion in 2026. Dark SHINE aims to search for the ne w mediator\, Dark Photon\, bridging the Dark sector and the ordinary matte r. In this work and presentation\, we present the idea of this new project and 1st prospective study in search for Dark Photon decaying into light d ark matter. It also provides the opportunity to incorporate broader scope of BSM search ideas utilizing the fixed-target experiment of this type.\n\ nRefererence:\n\nSci. China-Phys. Mech. Astron.\, 66(1): 211062 (2023)\, D OI:10.1007/s11433-022-1983-8\n\narXiv:2311.01780\n\narXiv:2310.13926\n\nar Xiv:2401.15477\n\nDOI:10.5281/zenodo.8373963\n\nhttps://indico.particle.me phi.ru/event/436/contributions/4393/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4393/ END:VEVENT BEGIN:VEVENT SUMMARY:Latest results of searches of Higgs Boson decays into Dark Matter particles in the ATLAS experiment DTSTART;VALUE=DATE-TIME:20241023T072500Z DTEND;VALUE=DATE-TIME:20241023T074000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4391@cern.ch DESCRIPTION:Speakers: Marina Pokidova (NRC Kurchatov Institute PNPI\, Pete r the Great St.Petersburg Polytechnic University (SPbPU))\nSearch for Dark Matter (DM) particles is one of the most interesting problem in modern ph ysics. Light dark matter particles may be produced in decays of the Higgs boson that would appear invisible to the detector. \n"Higgs portal" models predict decay of Standard Model Higgs boson into pair of WIMP particles\, which are strong candidates for DM. The production of Higgs Boson in vect or boson fusion process (VBF+MET)\, followed by Higgs decay into DM partic les is the most promising channel for the search due to high signal sensit ivity. This talk presents latest results for VBF+MET and statistical comb ination of Higgs invisible searches obtained at ATLAS Large Hadron Collide r experiment using data collected for Run II ($\\sqrt{s}$ = 13 TeV).\n\nht tps://indico.particle.mephi.ru/event/436/contributions/4391/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4391/ END:VEVENT BEGIN:VEVENT SUMMARY:Multilayer SND (Scattering & Neutrino Detector) optimization for s tatistical analysis of tau-neutrino events using detector response DTSTART;VALUE=DATE-TIME:20241023T071000Z DTEND;VALUE=DATE-TIME:20241023T072500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4390@cern.ch DESCRIPTION:Speakers: Vasilisa Guliaeva (MSU\, MISIS)\nThe SHiP (Search fo r Hidden Particles) experiment is a new fixed-target experiment to be inst alled at the CERN SPS ring with a 400 GeV proton beam energy. The primary goal of the experiment is to detect signals from the Hidden Sector particl es\, introduced to describe dark matter\, baryon asymmetry\, and small neu trino masses. To suppress background\, an iron magnetized hadron absorber and a muon shield are utilized\, along with several veto systems\, aiming to reduce the experiment's overall background to zero over 5 years of oper ation.\n\nSND (Scattering and Neutrino Detector) is the SHiP detector proj ect designed to detect neutrinos of all flavors and direct signals from Li ght Dark Matter (LDM) interactions. An updated design for SND@SHiP include s a high-granularity hadron calorimeter achieved using scintillating fiber s (SciFi) and scintillator layers (Scint).\n\nA key focus of this work is the classification of tau-neutrino events in the SND. This includes distin guishing tau-neutrino interactions via charged current (CC) deep inelastic scattering (DIS) followed by tau lepton decay in both leptonic and hadron ic channels\, from the background of muon-neutrino interactions via CC and neutral current (NC) DIS. Specifically\, the classification is focused on :\n\n - Signal from inelastic interaction of tau-neutrinos via charged cur rent on nuclei followed by tau lepton decay in the leptonic channel (CC DI S $ \\nu_{\\tau} N \\rightarrow \\tau + X \\rightarrow \\mu \\nu_{\\tau} \ \nu_{\\mu}+ X $) against the background of signal from inelastic interacti on of muon neutrinos via charged current on nuclei (CC DIS $ \\nu_{\\mu} N \\rightarrow \\mu + X $).\n - Signal from inelastic interaction of tau-ne utrinos via charged current on nuclei followed by tau lepton decay in the hadronic channel (CC DIS $ \\nu_{\\tau} N \\rightarrow \\tau + X \\rightar row hadrons + X $) against the background of signal from inelastic interac tion of muon neutrinos via neutral current on nuclei (NC DIS $ \\nu_{\\mu} N \\rightarrow \\nu_{\\mu} + X $ ).\n\nThe search for tau-neutrino signal was performed using reconstructed kinematics of secondary particles and d etector response. Inelastic neutrino interaction events from the SHiP expe riment spectrum on nuclei were simulated using the GENIE package\, and sec ondary particles were passed through the detector using the GEANT4 package . Simulations show that the average error in muon momentum determination i s about 12%\, while vertex reconstruction accuracy is $\\sim$1.5 cm. The e nergy resolution for pions ranges from $\\sim50\\%/\\sqrt{E}$ for energies between 1 and 100 GeV. A classifier was developed using machine learning methods trained on both kinematic and detector response variables\, capabl e of accurately classifying event types.\n\nhttps://indico.particle.mephi. ru/event/436/contributions/4390/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4390/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of experimental data on neutron decay for the possibility of the existence of right vector boson $W_R$ DTSTART;VALUE=DATE-TIME:20241023T065000Z DTEND;VALUE=DATE-TIME:20241023T071000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4389@cern.ch DESCRIPTION:Speakers: Anatolii Serebrov (NRC "Kurcharov institute" - PNPI) \nThe analysis of the latest most accurate experimental data on neutron de cay for the possibility of the existence of a right vector boson $W_R$ was carried out. As a result of the analysis\, it was found that there is an indication of the existence of a right vector boson $W_R$ with a mass of $M_{W_R }= 304_{-22}^{+28}$ GeV and a mixing angle with $W_L: \\zeta = -0. 038\\pm{0.014}$. This result should be considered\, on the one hand\, as a challenge to experimental physics at colliders\, where the upper limit on the mass of the right vector boson $W_R$ is significantly higher\, and on the other hand\, it indicates the need for even more accurate measurement s of neutron decay and its theoretical analysis. Possible consequences are considered\, assuming that the result can be confirmed. First\, an extens ion of the SM by introducing right vector bosons $W_R^±$\, $Z_R$ and righ t neutrinos would be required. Second\, right neutrinos can be considered as candidates for dark matter.\n\nhttps://indico.particle.mephi.ru/event/4 36/contributions/4389/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4389/ END:VEVENT BEGIN:VEVENT SUMMARY:Characteristics of EAS electron-photon and hadron components detec ted by the facilities of the Experimental Complex NEVOD DTSTART;VALUE=DATE-TIME:20241025T074500Z DTEND;VALUE=DATE-TIME:20241025T080000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4361@cern.ch DESCRIPTION:Speakers: Elena Yuzhakova ()\nA multi-component approach to th e study of extensive air showers (EAS) is being implemented in the Experim ental Complex (EC) NEVOD (MEPhI\, Moscow). The detection of the electron-p hoton component of air showers is carried out by the NEVOD-EAS array\, whi ch consists of 144 scintillation counters combined into 9 clusters. The ai r-shower hadronic component is measured using 72 neutron detectors grouped in 12 clusters of the URAN array.\n\nIn the report\, characteristics of e xtensive air showers detected by the EC NEVOD facilities are discussed. Th e accuracies of reconstructing main air-shower parameters with the NEVOD-E AS and URAN arrays have been estimated. The lateral distribution functions of EAS thermal neutrons and electron-photon component have been obtained. The spectra of air-shower size based on the data of two arrays are presen ted\, and the reconstructed energy spectrum of primary cosmic rays is give n.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4361/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4361/ END:VEVENT BEGIN:VEVENT SUMMARY:On the study of the muon energy spectrum in the Baikal-GVD neutrin o telescope DTSTART;VALUE=DATE-TIME:20241025T073000Z DTEND;VALUE=DATE-TIME:20241025T074500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4360@cern.ch DESCRIPTION:Speakers: Mikhail Lisitsin (National Research Nuclear Universi ty MEPhI)\nThe muon component of the extensive atmospheric showers (EAS) i s widely used in high-energy physics as a tool to study the processes of n ucleus-nucleus interactions and decays of secondary particles. Information about muons with energies above 100 TeV can carry information about cosmi c ray sources\, as well as elements of “new physics”\, so the task of measuring the energy spectrum of such muons is promising. The only instrum ent for measuring the energy of ultrahigh-energy muons above 100 TeV are c urrently the gigaton neutrino telescopes (IceCube\, Baikal-GVD).\n Very High Energy muons (VHE-muons)\, being born in the EAS\, arrive at t he facility accompanied by low multiplicity bundles. Such events are diffi cult to distinguish from events with large multiplicity bundles but withou t VHE-muon\, since the total energy and energy release may be similar for such large bundles and single VHE-muons accompanied by small bundles. From this feature of VHE-muons\, the necessity arises to develop a universal m ethod to separate such events in gigaton neutrino telescopes.\n V HE-muons tend to lose their energy stochastically\, sometimes in large por tions\, while the energy release of low-energy muons has a less expressed stochastic character. The peak-median ratio of the longitudinal energy rel ease profile of an event allows us to exploit this feature and identify mu on bundles with ultrahigh energy muons. In this work\, we analyze the spec trum of EAS muon bundles and evaluate the possibility of registering and i dentifying muon bundles with VHE-muons using the peak-median ratio of the longitudinal energy release profile.\n\nhttps://indico.particle.mephi.ru/e vent/436/contributions/4360/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4360/ END:VEVENT BEGIN:VEVENT SUMMARY:Measuring the Polarizabilities of Neutral and Charged Pions at JLa b DTSTART;VALUE=DATE-TIME:20241025T071500Z DTEND;VALUE=DATE-TIME:20241025T073000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4362@cern.ch DESCRIPTION:Speakers: Victor Tarasov (NRC "Kurchatov Institute")\nfor the CPP/NPP collaboration\n\nThe electric and magnetic polarizabilities of a p article describe its\nresponse to external electric and magnetic fields. T he values of electric (alpha) and magnetic (beta) polarizabilities depend on the "stiffness" of the particle's constituent bonds and provide importa nt information about its internal structure. As the lightest bound state o f QCD\, the pion's polarizability is measured to test Chiral Perturbation Theory\n(ChPT) at low energies.\n\nThe polarizabilities of charged and neu tral pions will be extracted from\nexperimental data obtained at Jefferson Lab. This involves measuring the cross-section of pion pair production du ring the interaction of a 4.5...6 GeV photon beam with a lead target via t he Primakoff effect.\n\nThis talk will cover existing measurements of pion polarizability and the\ncurrent state of the experiment at Hall D in Jeff erson Lab.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/436 2/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4362/ END:VEVENT BEGIN:VEVENT SUMMARY:Separation of QCD and EWK processes of vector diboson production u sing machine learning algorithms with third-jet information. DTSTART;VALUE=DATE-TIME:20241025T070000Z DTEND;VALUE=DATE-TIME:20241025T071500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4359@cern.ch DESCRIPTION:Speakers: Dmitriy Zubov (NRNU MEPhI)\nRare processes which occ ur via the electroweak interactions play a very important role among the v ector boson production processes. Such processes are of interest both from the perspective of precision tests of the Standard Model\, in particular for the investigation of the mechanism of electroweak symmetry breaking\, and from the perspective of search for physics beyond the Standard Model v ia anomalous gauge boson couplings. One of the main difficulties in the st udy of EWK productions is the separation of signal events from the dominan t QCD background processes of vector boson production. A series of studies have shown an additional suppression power for the vector diboson QCD pro duction processes with respect to EWK using the third hadronic jet rapidit y. In this study\, we present a technique for applying the machine learnin g algorithms to separate the QCD and EWK processes of vector diboson produ ction using additional information about the third jet in the case of the process of $ZZ$ pair production and subsequent decay to the $\\ell\\ell\\n u\\nu$ final state.\n\nhttps://indico.particle.mephi.ru/event/436/contribu tions/4359/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4359/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of neutral triple gauge couplings sensitivity to new physics manifestations using augmented vertex function approach with $Z(\\nu\\bar {\\nu})\\gamma$ production DTSTART;VALUE=DATE-TIME:20241025T064500Z DTEND;VALUE=DATE-TIME:20241025T070000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4363@cern.ch DESCRIPTION:Speakers: Alena Chekhonina (NRNU MEPhI)\nThe most successful t heory describing elementary particles\, Standard Model (SM)\, can not expl ain some already observed phenomena\, so it needs an extension. Any new ob served manifestation of the new physics phenomenon brings the construction of a more general theory closer\, since it provides new necessary informa tion. The study reported in this talk contains an indirect model-independe nt way\, vertex function approach\, which is used for searching more physi cs phenomena beyond the SM. This approach allows one to parameterize neutr al triple gauge couplings (nTGC) which are prohibited in the SM. The $Z(\\ nu\\bar{\\nu})\\gamma$ production in pp collisions is used to study nTGC. Expected one-dimension limits on 12 vertex parameters are set under the co nditions of Run II and Run III of the ATLAS experiment (LHC). Four aforeme ntioned parameters have not been studied at the LHC experiments before. Tw o-dimensional correlation contours are also studied in this work. This ana lysis shows that in future the most strict limits may be set by using the $Z(\\nu\\bar{\\nu})\\gamma$ production. Moreover\, the problem of unitarit y violation is also considered in the work. Unitarity bounds have been cal culated for several coefficients\, and all the limits are found to be unit arized.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4363/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4363/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects of search for CP-violating effects of neutral triple gau ge couplings at the LHC DTSTART;VALUE=DATE-TIME:20241025T063000Z DTEND;VALUE=DATE-TIME:20241025T064500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4358@cern.ch DESCRIPTION:Speakers: Artur Semushin (NRNU MEPhI)\nThe main goal of modern experiments in high-energy-physics area is to find deviations from the St andard Model (SM)\, which describe data well but is expected to be extende d to a more general theory. Anomalous coupling approach provides a possibi lity to look for a wide range of new physics effects in different experime ntal signatures thanks for its model-independence. In this work the neutra l triple gauge couplings (nTGCs) are considered in $ZZ(\\ell\\ell\\nu\\nu) $ and $Z(\\ell\\ell)\\gamma$ channels\, and effective field theory is used to parameterize these couplings in the Lagrangian. NTGCs are triple inter actions between $Z$ bosons and photons\, and some of them violate CP. Ofte n constraints on CP-violating nTGCs are set basing on CP-conserving effect s\, and therefore CP violation is not probed in these studies. This work p resents a study of CP-sensitive variables in the aforementioned channels u sing special angular variables and matrix-element-based optimal observable s. Basing on these variables\, one- and two-dimensional expected limits on the nTGCs are set for the conditions of Run3 at LHC experiments. This stu dy shows the possibility to search for CP-violation using nTGC framework a nd special CP-sensitive variables. These variables also can be used in oth er channels and with different parameterizations of the Lagrangian.\n\nhtt ps://indico.particle.mephi.ru/event/436/contributions/4358/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4358/ END:VEVENT BEGIN:VEVENT SUMMARY:Probing Neutral Triple Gauge Couplings via Zγ(ℓ+ℓ−γ) Produ ction at e+e− Colliders DTSTART;VALUE=DATE-TIME:20241025T061500Z DTEND;VALUE=DATE-TIME:20241025T063000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4364@cern.ch DESCRIPTION:Speakers: Danning Liu (TDLI\, SJTU)\nRef. arXiv:2404.15937 [he p-ph]\n\nNeutral triple gauge couplings (nTGCs) are absent in the Standard Model (SM) and at the dimension-6 level in the Standard Model Effective F ield Theory (SMEFT)\, arising first from dimension-8 operators. As such\, they provide a unique window for probing new physics beyond the SM. These dimension-8 operators can be mapped to nTGC form factors whose structure i s consistent with the spontaneously-broken electroweak gauge symmetry of t he SM. In this work\, we study the probes of nTGCs in the reaction $e^{+}e ^{−}$→Zγ with Z→ℓ$^{+}$ℓ$^{−}$(ℓ=e\,μ) at an e$^{+}$e$^{ −}$ collider. We perform a detector-level simulation and analysis of thi s reaction at the Circular Electron Positron Collider (CEPC) with collisio n energy $\\sqrt{s}$ = 240 GeV and an integrated luminosity of 20 ab$^{− 1}$. We present the sensitivity limits on probing the new physics scales o f dimension-8 nTGC operators via measurements of the corresponding nTGC fo rm factors.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/43 64/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4364/ END:VEVENT BEGIN:VEVENT SUMMARY:Spin physics studies with polarized deuteron and proton beams at Nuclotron DTSTART;VALUE=DATE-TIME:20241023T140000Z DTEND;VALUE=DATE-TIME:20241023T142000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4370@cern.ch DESCRIPTION:Speakers: Vladimir LADYGIN (VBLHEP\, JINR)\nNuclotron complex gives the unique opportunity to study spin effects using polarized deutero n and proton beams from new polarized ion source. Recent results on the s pin effects in deuteron-proton and proton-proton elastic scattering are d iscussed. The data on the deuteron analyzing powers Ay\, Ayy and Axx o btained at large transverse momenta in the energy range 400-1800 MeV demo nstrate the sensitivity to the short-range spin structure of the isoscalar nucleon-nucleon correlations. The data on the beam analyzing power in pr oton-proton quasi-elastic scattering can be used to improve the phase-sh ift analysis in the Nuclotron energy range of Nuclotron\n The perspectives of further progress in physics program as well as in the development of t he beam polarimetry and proton spin manipulation techniques are disscussed .\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4370/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4370/ END:VEVENT BEGIN:VEVENT SUMMARY:A Monte Carlo study of the MPD performance for hyperon selection u sing machine learning techniques DTSTART;VALUE=DATE-TIME:20241025T094500Z DTEND;VALUE=DATE-TIME:20241025T100000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4395@cern.ch DESCRIPTION:Speakers: Dilyana Suvarieva ()\nStudy of the strangeness produ ction in heavy-ion collisions is one\nthe primary goals of the MPD experim ent at the NICA collider. To\ncollect sufficient statistics of (multi)stra nge particle decays\,\ntheir efficient selection from the high combinatori al background\nis required. Presumably\, solution of such a task can great ly benefit\nfrom multivariate analyses based on machine learning technique s.\nIn this work\, results of application of the machine learning approach es\,\nimplemented in the TMVA package of the ROOT framework\, are presente d\nfor Monte Carlo data event samples of heavy-ion collisions and compared with the results of the topological cuts selection method.\n\nhttps://ind ico.particle.mephi.ru/event/436/contributions/4395/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4395/ END:VEVENT BEGIN:VEVENT SUMMARY:Performance of the Fast Interaction Trigger(FIT) detector system f or global observables at ALICE in Run-3 DTSTART;VALUE=DATE-TIME:20241025T101500Z DTEND;VALUE=DATE-TIME:20241025T103000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4397@cern.ch DESCRIPTION:Speakers: Arthur Furs (INR RAS)\nThe primary purpose of the AL ICE experiment at the Large Hadron Collider (LHC) is to study the properti es of nuclear matter at extremely high temperatures and energy density pro duced by relativistic nucleus-nucleus collisions. During the Long Shutdown 2 (2019-2022)\, new detectors were incorporated into the ALICE setup\, in cluding a Fast Interaction Trigger (FIT). The FIT detector system consists of three sub-detectors based on different technologies: FDD\, FT0 and FV0 . In addition to online functionality\, the FIT data are used offline for multiplicity\, centrality\, collision time\, event-plane determination\, v ertex position\, and veto for diffractive and ultra-peripheral heavy-ion c ollisions. These global observables are essential for event characterizati on and the study of nuclear matter properties. This presentation will give a preliminary overview of FIT's performance in the extraction of global o bservables from pp and A-A collisions during the LHC Run 3.\n\nhttps://ind ico.particle.mephi.ru/event/436/contributions/4397/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4397/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutral meson production results in pp\, p--Pb and Pb--Pb collisio ns in ALICE DTSTART;VALUE=DATE-TIME:20241025T100000Z DTEND;VALUE=DATE-TIME:20241025T101500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4396@cern.ch DESCRIPTION:Speakers: Dmitry Averyanov (NRC "Kurchatov Institute")\nIn hig h-energy hadronic collisions neutral meson spectra can be measured with hi gh precision in a wide range of transverse momenta\, providing valuable in put for the nucleon structure functions parametrization and for studying i n great detail the cold and hot matter effects.\n\nThe ALICE experiment at the LHC provides the possibility to measure photons in large acceptance E MCAL or precise PHOS calorimeters and to reconstruct photons converted in e+e- pairs and reconstructed in the central tracking system. Simultaneous measurement of neutral meson spectra with different methods provides good cross-check of the measurements and allows one to dramatically reduce unce rtainties.\n\nIn this talk we present recent results from ALICE on the neu tral meson measurements in pp\, p--Pb\, and Pb--Pb collisions at LHC energ ies based on the data collected in LHC Run 2 and the performance of ALICE in LHC Run 3.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/ 4396/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4396/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of phi meson production in the BM@N experiment DTSTART;VALUE=DATE-TIME:20241025T091500Z DTEND;VALUE=DATE-TIME:20241025T093000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4399@cern.ch DESCRIPTION:Speakers: Ramin Barak ()\nThis work is devoted to the search f or phi mesons after collision of Xe beams with a CsI target at E = 3.8 AGe V at the BM@N experiment (JINR\, Dubna). Both MC and experimental data wer e considered and peaks in the invariant mass distribution corresponding to phi mesons were obtained. Analysis of reconstruction efficiency was perfo rmed. The future aim is to increase our understanding of the transition fr om baryonic matter to (quark-gluon plasma) QGP.\n\nhttps://indico.particle .mephi.ru/event/436/contributions/4399/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4399/ END:VEVENT BEGIN:VEVENT SUMMARY:Reconstruction of photons and neutral mesons in heavy-ion collisio ns with MPD at NICA DTSTART;VALUE=DATE-TIME:20241025T093000Z DTEND;VALUE=DATE-TIME:20241025T094500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4398@cern.ch DESCRIPTION:Speakers: Yonghong Wang (Shandong University)\nThe Multi-Purpo se Detector (MPD)\, currently under construction at the NICA complex at JI NR\, is designed to be the primary experiment for studying heavy-ion colli sions in the energy range of $\\sqrt{s_{NN}}$ =4−11 GeV. The MPD aims to explore the baryon-rich region of the QCD phase diagram to investigate th e possible existence of a first-order phase transition and a critical end- point. The measurement of direct photon and neutral meson production is a key part of the MPD physics program.\n\nWe will present results of physics feasibility studies for photon and neutral mesons ($\\pi^{0}$ and η) re construction with the MPD detector in Bi+Bi collisions at $\\sqrt{s_{NN}}$ = 9.2 GeV simulated using realistic event generators. Photon measurements are performed using two methods\, including the identification of photon clusters in the electromagnetic calorimeter (ECAL) and the reconstruction of photons in the tracking system as dielectron pairs produced through con versions in detector materials (PCM). Neutral meson signals are analyzed u sing the invariant mass method by combining photon pairs from ECAL-ECAL\, PCM-PCM\, and ECAL-PCM sources\, with the uncorrelated combinatorial backg round estimated through the event-mixing technique. The measured $\\pi^{0} $ and η transverse momentum spectra are compared to truly generated ones to estimate robustness of the developed reconstruction procedures.\n\nhttp s://indico.particle.mephi.ru/event/436/contributions/4398/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4398/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of neutron emission at large angles in Xe + CsI collisions a t 3.8 A GeV DTSTART;VALUE=DATE-TIME:20241025T090000Z DTEND;VALUE=DATE-TIME:20241025T091500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4402@cern.ch DESCRIPTION:Speakers: Nikita Lashmanov (JINR)\nNeutron energy spectra were measured in the energy range 2 – 200 MeV for emission angles of 95°\, 110° and 121° in collisions of 124Xe nuclei with a CsI target at a beam energy of 3.8 GeV/nucleon. The measurement was carried out with a compact TOF spectrometer in the last run of the BM@N experiment. The spectrometer characteristics and data analysis are discussed. The studied region of ang les corresponds to neutrons emitted during the decay of spectators of the target nuclei. The resulting neutron energy spectra are well described by phenomenological model of three moving sources. In the energy region below 15 MeV\, the angular distribution is isotropic. It indicates that the vel ocity of this neutron source is close to zero. The obtained neutron spectr a are compared with results of theoretical models.\n\nhttps://indico.parti cle.mephi.ru/event/436/contributions/4402/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4402/ END:VEVENT BEGIN:VEVENT SUMMARY:Analysis of Λ-hyperon production in carbon-solid target collision s in the BM@N experiment DTSTART;VALUE=DATE-TIME:20241025T084500Z DTEND;VALUE=DATE-TIME:20241025T090000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4401@cern.ch DESCRIPTION:Speakers: Ksenia Alishina (JINR VB LHEP)\nBM@N (Baryonic Matte r at Nuclotron) is the first fixed target experiment collecting data at th e NICA accelerator. The goal of BM@N physics program is a study of highly compressed nuclear matter in heavy ion beams. The Nuclotron provides heavy ion beams with energies from 2.3 to 4.5 AGeV\, which is suitable for stud ies of strange mesons and multi–strange hyperons produced in nucleus-nuc leus collisions close to the kinematic threshold.\nThe BM@N experiment col lected its initial data using a carbon beam with kinetic energies of 4.0 a nd 4.5 AGeV and a set of solid targets\, including Al\, C\, Cu\, and Pb. T his paper outlines the methodology for calculating cross sections and meas uring yields in the Λ→p+π- decay channel. Additionally\, the results i nclude estimates of the temperature inside the fireball\, obtained from th e inverse distributions of transverse momenta.\n\nhttps://indico.particle. mephi.ru/event/436/contributions/4401/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4401/ END:VEVENT BEGIN:VEVENT SUMMARY:Machine Learning-based Neutron Reconstruction in the HGND at the B M@N experiment DTSTART;VALUE=DATE-TIME:20241025T083000Z DTEND;VALUE=DATE-TIME:20241025T084500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4400@cern.ch DESCRIPTION:Speakers: Vladimir Bocharnikov (HSE University)\nThe Highly Gr anular Neutron Detector (HGND) is designed for the BM@N experiment to stud y neutron emission in heavy ion collisions at beam energies up to 4A GeV. This detector allows the identification of neutrons and the reconstruction of their energies using time-of-flight method\, facilitating the assessme nt of neutron yields and azimuthal flow. The challenging neutron energy ra nge of $0.5-4$ GeV and large background contributions require sophisticate d reconstruction algorithms. In this contribution\, we present a machine l earning-based approach to the neutron reconstruction problem and discuss p reliminary results of the proposed algorithm.\n\nhttps://indico.particle.m ephi.ru/event/436/contributions/4400/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4400/ END:VEVENT BEGIN:VEVENT SUMMARY:Study of Bc+ decays at CMS DTSTART;VALUE=DATE-TIME:20241024T155000Z DTEND;VALUE=DATE-TIME:20241024T160500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4387@cern.ch DESCRIPTION:Speakers: Aleksandr Kolov (LPI RAS\, NRNU MEPhI)\nDecays of $B _c^+$ meson involving a charmonium resonance are studied. Both Run-2 and R un-3 pp collision data are used to improve the sensitivity and accuracy of the measurements.\n\nhttps://indico.particle.mephi.ru/event/436/contribut ions/4387/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4387/ END:VEVENT BEGIN:VEVENT SUMMARY:Spectroscopy of beauty strange baryons at CMS DTSTART;VALUE=DATE-TIME:20241024T153500Z DTEND;VALUE=DATE-TIME:20241024T155000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4386@cern.ch DESCRIPTION:Speakers: Kirill Ivanov (Moscow Institute of Physics and Techn ology)\nLatest CMS results on spectroscopy of beauty strange baryons are r eported\, including new decay modes and studies of excited states. The ana lyses use pp collision data at 13 TeV.\n\nhttps://indico.particle.mephi.ru /event/436/contributions/4386/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4386/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the phase difference between strong and electromagn etic amplitudes via the lineshape scan of the J/psi resonance DTSTART;VALUE=DATE-TIME:20241024T142000Z DTEND;VALUE=DATE-TIME:20241024T143500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4385@cern.ch DESCRIPTION:Speakers: Igor Boyko (JINR)\nThe J/psi charmonium state can de cay\nto the same final states through either\nstrong or electromagnetic me chanism.\nTheoretical models predict rather different\nvalues of the relat ive phase difference\nbetween the two amplitudes. The BESIII\nexperiment h as performed an energy scan\nof the process e+e- -> J/psi -> phi eta\nin t he vicinity of the J/psi peak.\nIn this talk we report the determination\n of the phase difference between strong\nand electromagnetic amplitudes fro m the\nlineshape scan of the J/psi resonance.\n\nhttps://indico.particle.m ephi.ru/event/436/contributions/4385/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4385/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the inclusive branching fractions for Bs decays int o D mesons DTSTART;VALUE=DATE-TIME:20241024T150500Z DTEND;VALUE=DATE-TIME:20241024T152000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4388@cern.ch DESCRIPTION:Speakers: Murad Yasaveev (HSE)\nWe report measurement of the $ B_s^0$ absolute branching fractions $Br(B_s^0 \\to D_s^{\\pm} X)$\, $Br(B_ s^0 \\to D^0/\\bar{D}^0 X)$\, and $Br(B_s^0 \\to D^{\\pm} X)$. The results are based on a sample of 121.4 fb$^{-1}$ collected at the $\\Upsilon(1086 0)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^+ e^- $ collider. We perform full reconstruction of one $B_s^0$ meson in $e^+e^- \\to \\Upsilon(10860) \\to B_s^{*} \\bar{B}_s^{*}$ events and measure yie lds of $D_s^+$\, $D^0$\, and $D^+$ mesons in the rest of the event. We obt ain $Br(B_s^0 \\to D_s^{\\pm} X)$ = (68.6 $\\pm$ 7.2 $\\pm$ 4.0)%\, $Br(B_ s^0 \\to D^0/\\bar{D}^0 X)$ = (21.5 $\\pm$ 6.1 $\\pm$ 1.8)%\, and $Br(B_s^ 0 \\to D^{\\pm} X)$ = (12.6 $\\pm$ 4.6 $\\pm$ 1.3)%\, where the first unce rtainty is statistical and the second is systematic. The results for $Br(B _s^0 \\to D_s^{\\pm} X)$ and $Br(B_s^0 \\to D^0/\\bar{D}^0 X)$ are compati ble with previous Belle measurements\, the $Br(B_s^0 \\to D^{\\pm} X)$ is measured for the first time.\n\nhttps://indico.particle.mephi.ru/event/436 /contributions/4388/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4388/ END:VEVENT BEGIN:VEVENT SUMMARY:Hadronic decays of excited bottomonium states at Belle and Belle I I DTSTART;VALUE=DATE-TIME:20241024T152000Z DTEND;VALUE=DATE-TIME:20241024T153500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4384@cern.ch DESCRIPTION:Speakers: Evgeniy Kovalenko (BINP)\nThe Belle and Belle II exp eriments have collected a unique sample of data at centre-of-mass energies above the $\\Upsilon(\\text{4S})$ resonance. We present several results related to hadronic transitions between bottomonium states such as $\\Upsi lon(\\text{5S}) \\to \\Upsilon(\\text{1S\,2S})\\eta$\, $\\Upsilon(\\text{5 S\, 10753}) \\to \\Upsilon(\\text{1S\,2S})\\pi^+\\pi^-$\, $\\Upsilon(\\tex t{5S}) \\to h_b(\\text{1P\,2P})\\pi^+\\pi^-$\, and $h_b(\\text{1P\,2P}) \\ to \\Upsilon(1S)\\eta$.\n\nhttps://indico.particle.mephi.ru/event/436/cont ributions/4384/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4384/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of the hadronic cross sections via ISR at Belle II DTSTART;VALUE=DATE-TIME:20241024T145000Z DTEND;VALUE=DATE-TIME:20241024T150500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4383@cern.ch DESCRIPTION:Speakers: Boris Shwartz (Budker Institute of Nuclear Physics)\ nA study of the hadrons production in $e^+e^-$ annihilation at low energie s provides important information about interactions of light quarks and sp ectroscopy of their bound states. \nPrecise measurements of the total hadr onic cross section\, characterized by the ratio R\, is needed for the calc ulation of the contribution of the hadronic vacuum polarization to the muo n anomalous magnetic moment. It should be noted that at present the accura cy of the theoretical calculations of the muon (g-2) via the Standard Mode l is dominated by the precision of the hadronic contribution while an ambi guity in the theoretical results exists due to considerable difference bet ween experimental data from different experiments. This reports describes status and prospects of the hadronic cross sections measurements at Belle II experiment via ISR approach. A measurement of the $e^+e^− \\to \\pi^+ \\pi^−\\pi^0$ cross section in the energy range from 0.62 GeV to 3.5 GeV based on 191 fb$^{−1}$ of integrated luminosity is considered in detail s.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4383/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4383/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the energy dependence of the $e^+e^− \\rightarrow B\\bar{B}\, B\\bar{B}^*\,$ and $B^*\\bar{B}^*$ cross sections at Belle I I DTSTART;VALUE=DATE-TIME:20241024T143500Z DTEND;VALUE=DATE-TIME:20241024T145000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4382@cern.ch DESCRIPTION:Speakers: Sergey Privalov ()\nWe report measurements of the $e ^+e^− \\rightarrow B\\bar{B}\, B\\bar{B}^*\,$ and $B^*\\bar{B}^*$ cross sections at four energies\, 10653\, 10701\, 10746 and 10805 MeV\, using da ta collected by the Belle II experiment. We reconstruct one $B$ meson in a large number of hadronic final states and use its momentum to identify th e production process. In the first 2 − 5 MeV above $B\\bar{B}^*$ thresho ld\, the $e^+e^− \\rightarrow B^*\\bar{B}^*$ cross section increases rap idly. This may indicate the presence of a pole close to the threshold.\n\n https://indico.particle.mephi.ru/event/436/contributions/4382/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4382/ END:VEVENT BEGIN:VEVENT SUMMARY:Charmonia production in e+e- annihilation at center-of-mass energi es above 3.81 GeV DTSTART;VALUE=DATE-TIME:20241024T140000Z DTEND;VALUE=DATE-TIME:20241024T142000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4381@cern.ch DESCRIPTION:Speakers: Olga Bakina (Joint Institute for Nuclear Research)\n We present measurements of charmonia production cross sections in e+e- ann ihilation at center-of-mass energies from 3.81 GeV to 4.95 GeV at BESIII. The number of observed vector states in this energy region exceeds that of the predicted vector charmonium states. These features suggest that some of these supernumerary vector states are candidates of an exotic nature. T o clarify the nature of these states and to distinguish between the differ ent theoretical models\, precise measurements of the production cross sect ion and of the resonance parameters are essential.\n\nhttps://indico.parti cle.mephi.ru/event/436/contributions/4381/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4381/ END:VEVENT BEGIN:VEVENT SUMMARY:Open and hidden strangeness in central A+A collisions from SPS to LHC: ratios of transverse energy density at midrapidity for the identified hadrons with different strangeness content DTSTART;VALUE=DATE-TIME:20241024T081500Z DTEND;VALUE=DATE-TIME:20241024T083000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4373@cern.ch DESCRIPTION:Speakers: Olga Shaposhnikova ()\nWe continue studies of the ef fects previously observed in very central (0-5% class) relativistic heavy -ion collisions where we found that the ratios of the Bjorken energy densi ty fractions\, relevant to the identified hadrons\, practically are not de pending on the collision energy in all cases of open and hidden strangenes s [1]. In our new work\, we include into the analysis the additional HEP data on the yields of particles containing one\, two or three strange quar ks. This includes Λ barion and Kos meson \, Ξ and Ω hyperons yields me asured in Au-Au and Pb-Pb collisions at √sNN = 39 GeV\, 200GeV and 2.76 TeV. The particle HEP data spectra were approximated in each case by the Levy functions\, and in such way the relevant mean p_t was obtained and used in the calculations of the mean transverse energy density at midra pidity for the particle (i) of interest. The Blast Wave approximation for the spectra shape was also used to compare and to estimate the systemati c error of mean p_t and of the relevant mean (dEt/dy)i . Finally\, the ratios were obtained of mean (dEt/dy) ϕ /(dEt/dy)i -- for ϕ-mesons an d other particles\, registered at midrapidity in central A+A collisions. T he results are discussed. \nThe authors acknowledge Saint-Petersburg State University for a research project 95413904\nReferences: \n[1] O. Shaposhn ikova\, A. Marova and G. Feofilov\, Open and Hidden Strangeness with Kaons and ϕ-Mesons in Bjorken Energy Density Approach for Central Collisions f rom SPS to LHC\, Physics of Particles and Nuclei\, 2024\, Vol. 55\, No. 4\ , pp. 1134–1139. © Pleiades Publishing\, Ltd.\, 2024.\n\nhttps://indico .particle.mephi.ru/event/436/contributions/4373/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4373/ END:VEVENT BEGIN:VEVENT SUMMARY:Feasibility studies of open charm production in future ALICE-3 exp eriment at LHC-HL DTSTART;VALUE=DATE-TIME:20241024T080000Z DTEND;VALUE=DATE-TIME:20241024T081500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4378@cern.ch DESCRIPTION:Speakers: Mikhail Malaev (NRC Kurchatov Institute PNPI)\nStage 3 of ALICE experiment considers construction of fully new detector based on the novel silicon technologies. New apparatus will widen area of studie s of hot and dense QCD matter produced in relativistic heavy-ion collision s for ALICE collaboration. Besides this it will highly improve precision o f already obtained results also giving opportunity for differential studie s. And one of the goals of future ALICE-3 experiment is precise differenti al study of open charm production in wide range of transverse momentum. \n In this contribution\, we present results of feasibility studies for the r econstruction of D-mesons excited states in the decay channels with neutra l photons or mesons detected in the large acceptance electromagnetic calor imeter of future ALICE-3 experiment at LHC-HL. Effect of merged clusters i n electromagnetic calorimeter is discussed and estimations of reconstructe d efficiency\, signal to background ratio and required for precise measure ments statistics of heavy ions collisions are presented.\n\nhttps://indico .particle.mephi.ru/event/436/contributions/4378/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4378/ END:VEVENT BEGIN:VEVENT SUMMARY:The upper limit on the $K^+\\rightarrow\\pi^0\\pi^0\\pi^0e^+\\nu$ decay DTSTART;VALUE=DATE-TIME:20241024T074500Z DTEND;VALUE=DATE-TIME:20241024T080000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4380@cern.ch DESCRIPTION:Speakers: Alexei Kulik (Institute for Nuclear Research)\nA hig h statistics search for the $K^+\\rightarrow\\pi^0\\pi^0\\pi^0e^+\\nu$ dec ay is performed by the OKA collaboration. No signal\nis observed. Two othe r decays are also studied: $K^+\\rightarrow\\pi^0e^+\\nu$ for normalizatio n and $K^+\\rightarrow\\pi^0\\pi^0e^+\\nu$ for the\ncross-check. The upper limit set is $BR(K^+\\rightarrow\\pi^0\\pi^0\\pi^0e^+\\nu)\n\nhttps://ind ico.particle.mephi.ru/event/436/contributions/4380/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4380/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of lepton flavour universality in Bc+ meson decays DTSTART;VALUE=DATE-TIME:20241024T071500Z DTEND;VALUE=DATE-TIME:20241024T073000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4377@cern.ch DESCRIPTION:Speakers: Aleksandr Sedelnikov ()\nCMS results on R(Jpsi) lept on flavor universality observable are reported using two channels of recon struction of the tau lepton. The measurements use 13 TeV pp collision data from the LHC Run 2.\n\nhttps://indico.particle.mephi.ru/event/436/contrib utions/4377/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4377/ END:VEVENT BEGIN:VEVENT SUMMARY:Searches for new physics in rare decays of heavy flavors at CMS DTSTART;VALUE=DATE-TIME:20241024T064500Z DTEND;VALUE=DATE-TIME:20241024T070000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4376@cern.ch DESCRIPTION:Speakers: Sergey Polikarpov (NRNU MEPhI and LPI RAS)\nIndirect searches for new physics are possible through studies of Flavor-changing- neutral-current (FCNC) transitions in heavy flavor decays. Several recent results based on 13 TeV (Run-2) and 13.6 TeV (Run-3) pp collisions at the CMS experiment are reported.\n\nhttps://indico.particle.mephi.ru/event/436 /contributions/4376/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4376/ END:VEVENT BEGIN:VEVENT SUMMARY:Resonant Charmonium Pair Production: A Comprehensive Review of The oretical and Experimental Advances DTSTART;VALUE=DATE-TIME:20241024T073000Z DTEND;VALUE=DATE-TIME:20241024T074500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4375@cern.ch DESCRIPTION:Speakers: Alisa Didenko (Joint Institute for Nuclear Research (JINR))\nThe narrow resonant-like structures were discovered by three main LHC collaborations (LHCb\, ATLAS\, CMS) in the di-Jpsi\, Jpsi-Psi2S invar iant mass spectra suggesting existence of the fully-heavy tetraquarks with a ccc(bar)c(bar) configuration. These new exotic resonances require detai led theoretical and experimental investigation. In this review\, the lates t experimental results and several theoretical approaches towards physics of new states are presented.\n\nhttps://indico.particle.mephi.ru/event/436 /contributions/4375/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4375/ END:VEVENT BEGIN:VEVENT SUMMARY:CP violation studies at CMS DTSTART;VALUE=DATE-TIME:20241024T070000Z DTEND;VALUE=DATE-TIME:20241024T071500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4374@cern.ch DESCRIPTION:Speakers: Alexander Tulupov ()\nCP violation plays a crucial r ole in our understanding of the universe’s matter-dominated nature. With out CP violation\, the Standard Model of particle physics cannot fully exp lain why the observable universe consists predominantly of matter\, as opp osed to an equal mix of matter and antimatter. The search for new sources of CP violation is essential for understanding the dynamics that could hav e led to this imbalance\, offering potential insights into physics beyond the Standard Model. This talk discusses the latest results from the CMS ex periment at $\\sqrt{s}=13\\ \\text{TeV}$\, focusing on CP violation in hea vy flavor physics.\n\nhttps://indico.particle.mephi.ru/event/436/contribut ions/4374/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4374/ END:VEVENT BEGIN:VEVENT SUMMARY:Feasibility studies of charmonia measurements at the ALICE experim ent at LHC DTSTART;VALUE=DATE-TIME:20241024T063000Z DTEND;VALUE=DATE-TIME:20241024T064500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4379@cern.ch DESCRIPTION:Speakers: Yeghishe Hambardzumyan (Moscow Institute of Physics and Technology)\nThe ALICE collaboration is committed towards strongly int eracting matter studies in proton-proton and heavy ion collisions at LHC\, one of the characteristic observables of which are systematic measurement s of quarkonia production with the future experiment of ALICE 3. Fast sim ulations for ALICE 3 showed that studies of charmonia states 1S ($J/\\psi \\to e^+e^-$) and 1P ($\\chi_{cJ} \\to J/\\psi \\gamma$ using a high-resol ution electromagnetic calorimeter are attainable. Charmonia reconstruction via $e^+e^-$ decay mode relies on electron identification using a trackin g system and an electromagnetic calorimeter. In the current report we demo nstrate performance of electron identification procedure on data of the AL ICE experiment collected during LHC Run 3 with pp collisions at $\\sqrt{s} =13.6$ TeV.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/43 79/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4379/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for Dibaryons with small energy excitation on SPD detector in NICA collider - accuracies and counting rates DTSTART;VALUE=DATE-TIME:20241023T143500Z DTEND;VALUE=DATE-TIME:20241023T145000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4372@cern.ch DESCRIPTION:Speakers: Vladimir Kurbatov (JINR)\nIt is proposed to do a sea rch for the light dibaryons in the experiment with the future SPD detector on the NICA collider at JINR . It is proposed that the reaction d + d → d + X should be measured at the collider momentum 2.6 GeV /c with the reg istration of the deuteron and proton in a final state.The achievable accur acies are estimated in different configurations of the detector with allow ance to its gradual modifications up to completion. The counting rate of t he reaction is estimated at ≈ 2 s−1 and the accuracy of mass measureme nt in the first version of the detector at ≈ 4.7 MeV\n\nhttps://indico.p article.mephi.ru/event/436/contributions/4372/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4372/ END:VEVENT BEGIN:VEVENT SUMMARY:GAN for prediction of direct photons in longitudinally polarized p roton-proton collisions at energy √s = 27 GeV DTSTART;VALUE=DATE-TIME:20241023T150500Z DTEND;VALUE=DATE-TIME:20241023T152000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4369@cern.ch DESCRIPTION:Speakers: Andrey Lobanov (SPbPU)\nA study of direct photon pro duction in longitudinally polarized proton-proton collisions presents a va luable opportunity to investigate the contribution of gluons to the total proton spin. This contribution is described in terms of a gluon helical di stribution function\, $\\Delta g(x)$. An investigation of this function fo rms part of the experimental program scheduled for the SPD experiment. The extraction of $\\Delta g(x)$ is achieved through the measurement of doubl e longitudinal spin asymmetry (DLSA) in direct photon production.\n\nThe s tudy of direct photons presents certain challenges. Due to their relative rarity\, it is difficult to distinguish direct photons from those produced by other sources. Consequently\, it is challenging to obtain a substantia l sample size. One potential solution is the application of generative mac hine learning models\, such as generative adversarial networks (GANs). The model can be trained to predict the outcome of longitudinally polarized p roton-proton collisions without modeling the entire experiment in detail\, but only the relevant process.\n\nAs the SPD experiment is still under co nstruction\, a PYTHIA8 Monte Carlo generator with polarized NNPDFpol11 was selected for testing the potential of using GAN to predict the production of direct photons in longitudinally polarized proton-proton collisions.\n \nThe present report is devoted to an investigation of the capabilities of GAN in predicting the outcomes of direct photon production in both polari zed and unpolarized proton-proton collisions at a center-of-mass energy of $\\sqrt{s} = 27$ GeV.\n\nWe acknowledge support from Russian Ministry of Education and Science. State assignment for fundamental research (code FSE G-2024-0033)\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4 369/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4369/ END:VEVENT BEGIN:VEVENT SUMMARY:Simulation of direct photons production in d+d collisions at $\\sq rt{s_{NN}}=13.5$ GeV and $\\sqrt{s_{NN}}=27$ GeV DTSTART;VALUE=DATE-TIME:20241023T145000Z DTEND;VALUE=DATE-TIME:20241023T150500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4368@cern.ch DESCRIPTION:Speakers: Dmitry Shapaev (Peter the Great St.Petersburg Polyte chnic University (SPbPU))\nDirect photons produced in quark-gluon and quar k-antiquark interactions are planned to be studied in detail in the upcomi ng SPD experiment at the NICA collider. Direct photons serve as important probes for understanding the dynamics of interactions in high-energy nucle ar collisions.\n\nAn important aspect for understanding the production of direct photons are parton distribution functions (PDFs)\, which determine the probability of detecting quarks and gluons with given characteristics inside nucleons. PDFs can differ significantly for free and internuclear n ucleons. The differences between these functions can be investigated throu gh the invariant spectra and nuclear modification factors of direct photon s in deuteron-deuteron collisions.\n\nIn this paper\, we present calculati ons of the invariant spectra and nuclear modification factors of direct ph otons as a function of transverse momentum in the rapidity region $|y|\n\n https://indico.particle.mephi.ru/event/436/contributions/4368/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4368/ END:VEVENT BEGIN:VEVENT SUMMARY:K*-(892) meson production in 26.5 GeV/c K-minus-meson-N interactio ns at U-70 accelerator complex DTSTART;VALUE=DATE-TIME:20241023T155000Z DTEND;VALUE=DATE-TIME:20241023T160500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4367@cern.ch DESCRIPTION:Speakers: Nikita Klaugin ()\nWe report measurements of A-depen dence K$^*$-(892) mesons' production in interactions of 26.5 GeV/c K-minus -meson beam and nuclei (C\,Al\,Cu\,W) at SPASCHARM facility at U=70 accele rator complex (NRC "Kurchatov institute" - IHEP\, Protvino.\nA-dependence of K$^*$-(892) mesons is compared with our results on A-dependence of K0s- mesons and with other experimental measurements.\n\nhttps://indico.particl e.mephi.ru/event/436/contributions/4367/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4367/ END:VEVENT BEGIN:VEVENT SUMMARY:Polarization measurement of $\\Lambda$- and $\\bar{\\Lambda}$-hype rons formed by the interaction of $K^{-}$- and $\\pi^{-}$-mesons with nucl ei at the SPASCHARM facility at the U-70 accelerator DTSTART;VALUE=DATE-TIME:20241023T153500Z DTEND;VALUE=DATE-TIME:20241023T155000Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4366@cern.ch DESCRIPTION:Speakers: Vyacheslav Moiseev (NRC «Kurchatov Institute» - IH EP)\nThe first results on the polarization of inclusively produced $\\Lamb da$-hyperons in the $K^{-}$- and $\\pi^{-}$-beams and $\\bar{\\Lambda}$-hy perons in the $\\pi^{-}$-beam with a momentum of 26.5 GeV/$c$ were obtaine d at the SPASCHARM facility at the U-70 accelerator complex in Protvino. F or the data on the $K^{-}$-meson beam\, a noticeable positive polarization is observed in the region of large values of the Feynman variable $x_F$ a nd the transverse momentum $p_T$\, which was measured for the first time o n nuclei. The polarization of $\\Lambda$- and $\\bar{\\Lambda}$-hyperons i n the $\\pi^{-}$-beam does not exceed several percent in most of the studi ed kinematic region\, with the exception of the region $p_T>1\\ \\text{GeV }/c$\, where the $\\Lambda$ polarization is $23\\pm 9$ %.\n\nhttps://indic o.particle.mephi.ru/event/436/contributions/4366/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4366/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the ANN spin correlation parameter in elastic pp an d p ̅p scattering reactions in the SPASCHARM experiment at U-70. DTSTART;VALUE=DATE-TIME:20241023T152000Z DTEND;VALUE=DATE-TIME:20241023T153500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4365@cern.ch DESCRIPTION:Speakers: Alexey Bogdanov (MEPhI)\nThe possibility of measurin g spin correlation parameter in elastic proton-proton and antiproton-proto n scattering in the SPASCHARM experiment at U-70 accelerator complex at Pr otvino is discussed. The measurements will be carried out using polarized beams and a polarized target of the experiment. A realistic simulation of the experiment was carried out and an evaluation of the accuracy of ANN me asurements of elastic pp and p p scattering at an energy of 16 GeV and the time required to measure this observable in both reactions was made.\n\nh ttps://indico.particle.mephi.ru/event/436/contributions/4365/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4365/ END:VEVENT BEGIN:VEVENT SUMMARY:Local Polarimetry with Beam-Beam Counters at the SPD Experiment DTSTART;VALUE=DATE-TIME:20241023T142000Z DTEND;VALUE=DATE-TIME:20241023T143500Z DTSTAMP;VALUE=DATE-TIME:20260808T123825Z UID:indico-contribution-223-4371@cern.ch DESCRIPTION:Speakers: Arkadiy Terekhin (JINR)\nThe Beam-Beam Counters (BBC ) are components of the Spin Physics Detector at the NICA collider. They a re designed to perform local polarimetry of the colliding polarized proton and deuteron beams and luminosity control in the beam interaction region. Here\, the MC simulation of the BBC operation for proton-proton collision s is presented. The simulations are performed using the SpdRoot framework and the center-of-mass energy of 27 GeV. The results presented include th e estimation of the magnetic field influence on the inclusive charged part icle production asymmetries and the BBC. The selection of the pp-elastic s cattering events in the BBC is also discussed.\n\nhttps://indico.particle. mephi.ru/event/436/contributions/4371/ LOCATION: Petrovskiy 2 URL:https://indico.particle.mephi.ru/event/436/contributions/4371/ END:VEVENT END:VCALENDAR