BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:First measurements of 239Pu fission fraction and long term reactor power monitoring using antineutrino spectrum DTSTART;VALUE=DATE-TIME:20241023T081500Z DTEND;VALUE=DATE-TIME:20241023T083000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4298@cern.ch DESCRIPTION:Speakers: Nataliya Skrobova ()\, Eduard Samigullin ()\nThe hig hly segmented DANSS anti-neutrino scintillation detector is located at the Kalinin NPP and collects up to 5000 antineutrino events per day. The reac tor power was measured using the inverse beta-decay (IBD) event rate durin g 7.5 years with an accuracy of 1.3% in 3 days and with the relative syste matic uncertainty of less than 0.8%. The report will present the measured dependence of the antineutrino spectrum on the composition of reactor fuel . The measured ratio of cross-sections 235U/239Pu will be presented. The 2 39Pu fission fraction was measured during 7 years of the reactor operation using a fit of the measured IBD positron spectrum with model predictions for different isotopes. Taking into account the absolute antineutrino coun ting rates\, the parameters of a hypothetical sterile neutrino region was extended above $\\Delta m^2$ > 5 eV$^2$\, where there are indications of the existence of a sterile neutrino in the BEST and Neutrino-4 experiments \n\nhttps://indico.particle.mephi.ru/event/436/contributions/4298/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4298/ END:VEVENT BEGIN:VEVENT SUMMARY:Electromagnetic properties of neutrinos DTSTART;VALUE=DATE-TIME:20241025T144500Z DTEND;VALUE=DATE-TIME:20241025T151000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4272@cern.ch DESCRIPTION:Speakers: Alexander Studenikin (Moscow State University)\nWe s tart with an introduction to the theory of neutrino electromagnetic proper ties [1]. Then we consider the most recent experimental constraints on neu trino magnetic µ and electric d moments\, millicharge q\, charge radii r ν2 and anapole aν moments from the terrestrial experiments (the bounds f rom MUNU\, TEXONO\, GEMMA\, Super-Kamiokande\, Borexino\, COHERENT\, XENON 1T\, CONUS and the most recent bounds from XENONnT [2] and LUX-ZEPELIN [3 ]) and also discuss results of the recent studies on possible manifestatio ns of neutrino electromagnetic properties in astrophysics [4-7]. \nThen we focus on the main manifestation of neutrino electromagnetic interactions\ , such as: 1) the radiative decay in vacuum\, in matter and in a magnetic field\, 2) the neutrino Cherenkov radiation\, 3) the plasmon decay to neut rino-antineutrino pair\, 4) the neutrino spin light in matter\, and 5) the neutrino spin and spin-flavour precession are discussed. Phenomenologic al consequences of neutrino electromagnetic interactions (including the sp in light of neutrino) in astrophysical environments are also reviewed. Th e best bounds from laboratory experiments and astrophysical observations o n neutrino electromagnetic properties are confronted with the predictions of theories beyond the Standard Model. \n\n[1] C.Guinti\, A.Studenikin\, N eutrino electromagnetic interactions: A window to new physics\, Rev. Mod. Phys. 87 (2015) 531. \n[2] A.Khan\, Light new physics and neutrino elect romagnetic interactions in XENONnT\, Phys. Lett. B 837 (2023) 137650. \n[3 ] M.Atzori Corona et al.\, New constraint on neutrino magnetic moment from LZ dark matter search results\, Phys. Rev. D 107 (2023) 053001.\n[4] C.G iunti\, K.Kouzakov\, Y.F.Li\, A.Lokhov\, A.Studenikin\, S.Zhou\, Annalen P hys. 528 (2016) 198.\n[5] K.Stankevich\, A.Studenikin\, Neutrino quantum d ecoherence engendered by neutrino radiative decay\, Phys. Rev. D 101 (2020 ) 5\, 056004. \n[6] A.Popov\, A.Studenikin\, Manifestations of nonzero Maj orana CP-violating phases in oscillations of supernova neutrinos\, Phys. R ev. D 103 (2021) 115027. \n[7] S.Jana and Y.Porto\, Resonances of supernov a neutrinos in twisting magnetic fields\, Phys. Rev. Lett. 132 (2024) 1010 05.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4272/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4272/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for two-neutrino double electron capture on Ar-36 with Dark Side-50 detector DTSTART;VALUE=DATE-TIME:20241025T140000Z DTEND;VALUE=DATE-TIME:20241025T141500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4286@cern.ch DESCRIPTION:Speakers: Olga Lychagina (JINR\, MSU)\nTwo-neutrino double ele ctron capture is a rare nuclear decay where two electrons are simultaneous ly captured from the atomic shells and two neutrinos are carried away.\n\n The measurements of the energies of the emitted particles and the half-lif e of the 2EC2$\\nu$ decay to the ground state are of great interest to nuc lear physics. The model predictions for 2EC2$\\nu$ half-life are based on the evaluation of form the main source of NME. The NME calculations are co mplicated and have large uncertainties. Therefore\, if retrieved from expe riment\, half-life values can serve as a test for nuclear theory. In the o ne model framework some constraints on the 2EC0$\\nu$ NME can be derived u sing supposed values of the 2EC2$\\nu$ NME\, so the estimation of 2EC2$\\n u$ half-life could help to study physics beyond the Standard Model.\n\nThi s process is being studied on $^{36}$Ar for the first time. We have perfor med a search for two-neutrino double electron capture in the $KK$ and $KL$ shells of $^{36}$Ar using exposition of about 12 ton-day of data from the DarkSide-50 dark matter detector. As a preliminary result of the analysis \, no significant excess above background was found\, which allowed us to estimate that the half-life limits with CL=90%. We have also evaluated the sensitivity of the DarkSide-20k experiment\, which will become operationa l in the next few years.\n\nhttps://indico.particle.mephi.ru/event/436/con tributions/4286/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4286/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for processes beyond the Standard Model in the GERDA experi ment DTSTART;VALUE=DATE-TIME:20241025T133000Z DTEND;VALUE=DATE-TIME:20241025T134500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4277@cern.ch DESCRIPTION:Speakers: Anatoly Smolnikov (JINR)\nThe main goal of the GERDA experiment was to search for the neutrinoless double-beta decay of $^{76} $Ge. Beside this\, many other GERDA results of searching for various proce sses beyond the Standard Model were obtained. Among them\, a possible mani festation of the inclusive\, mode independent decays of a single neutron a nd proton and some specific modes of tri-nucleon decays in $^{76}$Ge were investigated\, as well as a possible decay of an electron via channel e$^- $→ ν$_e$ γ. A search for full energy depositions from bosonic keV-scal e dark matter candidates has been performed too. After 127.2 kg yr of tota l exposure\, a limit on the half-life of neutrinoless double-beta decay in $^{76}$Ge is set at $T_{1/2}$ > $1.8\\times 10^{26}$ yr \, which correspo nds to an upper limit on the effective Majorana neutrino mass *m*$_β$$_β $ $1.5\\times 10^{24}$ yr and for protons τ$_p$ > $1.3\\times 10^{24}$ yr at 90% C.I. This is the first limit obtained for $^{76}$Ge. The obtaine d limit on the sum of the decay widths of the four inclusive tri-nucleon d ecays corresponds to a lower lifetime limit of $1.2\\times 10^{26}$ yr. Th is result improves previous limits for tri-nucleon decays by one to three orders of magnitude. For the electron decay e$^-$→ ν$_e$ γ a lower lim it of τ$_e$ > $5.4\\times 10^{25}$ yr has been determined. The limits for the search of bosonic dark matter candidates pose the most stringent dire ct experimental results between 140 and 1021 keV. The brief description of the other results for several non-standard mechanisms of double-beta deca y is also included.\n\nhttps://indico.particle.mephi.ru/event/436/contribu tions/4277/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4277/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutrino Spin Effects in Gravitational Scattering DTSTART;VALUE=DATE-TIME:20241025T151000Z DTEND;VALUE=DATE-TIME:20241025T152500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4297@cern.ch DESCRIPTION:Speakers: Mridupawan Deka (JINR)\nWe study spin oscillations o f neutrinos scattering off of a rotating black hole surrounded by a thick magnetized accretion disk. Neutrino spin precession is caused by the inter actions of the neutrino magnetic moment with the toroidal and poloidal mag netic fields in the disk. We briefly discuss the findings from our numeric al simulations and their applications for the observations of astrophysica l neutrinos.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4 297/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4297/ END:VEVENT BEGIN:VEVENT SUMMARY:Status and Physics Potential of SATURNE DTSTART;VALUE=DATE-TIME:20241025T152500Z DTEND;VALUE=DATE-TIME:20241025T154000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4282@cern.ch DESCRIPTION:Speakers: Konstantin Kouzakov (Lomonosov Moscow State Universi ty)\nThe Sarov tritium neutrino experiment (SATURNE) is part of the scient ific program of the National Center for Physics and Mathematics (NCPM) [1] that was founded in Sarov in 2021. The experiment is under preparation\, with the first taking of data expected for 2025. \nBeing motivated by fund amental problems in neutrino physics\, SATURNE will primarily search for n eutrino electromagnetic interactions [2\,3] in elastic and ionizing neutri no-atom collisions. It will employ a high-intensity tritium neutrino sourc e\, with an initial activity of at least 10 MCi and possibly up to 40 MCi. The tritium source will be used in combination with the He-4\, Si and SrI $_2$(Eu) targets in order to study the elastic and ionization channels of neutrino-atom collisions at unprecedentedly low energies. The Si and SrI$_ 2$(Eu) detectors with record low-energy thresholds for such detector types will measure the ionization channel of neutrino-atom collisions. With the 1-year data from either detector\, one may expect to achieve a sensitivit y on the order of $\\sim10^{-12}\\\,\\mu_B$ at 90% C.L. to the neutrino ma gnetic moment $\\mu_\\nu$\, which is the most studied theoretically and ac tively searched experimentally among the neutrino electromagnetic properti es. The measurements with the liquid He-4 detector in a superfluid state a re expected to provide the first observation of coherent elastic neutrino- atom scattering (CEνAS) [4\,5]. This will bring the experimental studies of coherent elastic neutrino-nucleus scattering (CEνNS) [6] to a qualitat ively new level\, namely when one will be able to explore the neutrino ela stic scattering not only on a nucleus as a whole\, but also on an atom as a whole. With the 5-year data using the liquid He-4 detector\, it is also expected to achieve a record-high $\\mu_\\nu$-sensitivity of $\\sim10^{-13 }\\\,\\mu_B$ at 90% C.L. \n\n**References**\n\n 1. А.А. Yukhimchuk et al .\, FIZMAT **1** (2023) 5 (in Russian)\n 2. C. Giunti and A. Studenikin\, Rev. Mod. Phys. **87** (2015) 531\n 3. A.I. Studenikin and K.A. Kouzakov\, Mosc. Univ. Phys. Bull. **75** (2020) 379\n 4. Yu.V. Gaponov and V.N. Tik honov\, Sov. J. Nucl. Phys. **26** (1977) 314\n 5. M. Cadeddu\, F. Dordei\ , C. Giunti\, K. Kouzakov\, E. Picciau\, and A. Studenikin\, Phys. Rev. D **100** (2019) 073014\n 6. V. Pandey\, Prog. Part. Nucl. Phys. **134** (20 24) 104078\n\nhttps://indico.particle.mephi.ru/event/436/contributions/428 2/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4282/ END:VEVENT BEGIN:VEVENT SUMMARY:Studies of charge-sensor and gas properties of an ion-TPC for $\\m athrm{N\\nu DEx}$ experiment DTSTART;VALUE=DATE-TIME:20241025T141500Z DTEND;VALUE=DATE-TIME:20241025T143000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4276@cern.ch DESCRIPTION:Speakers: Tianyu Liang ()\nThe NvDEx is an experiment searchin g for the neutrinoless double beta decay using ${^{82}SeF_{6}}$ gas\, oper ated in a high-pressure gas TPC. To obtain a high energy resolution\, cust om-designed charge sensors are deployed to directly detect the drifting io ns. In this report\, the measurements of the properties of ${SF_{6}}$ and ${SeF_6}$ gases are presented. The preliminary test results of the perform ance of charge sensors are also discussed.\n\nhttps://indico.particle.meph i.ru/event/436/contributions/4276/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4276/ END:VEVENT BEGIN:VEVENT SUMMARY:Atomic electron shell excitations in neutrinoless double β decay DTSTART;VALUE=DATE-TIME:20241025T143000Z DTEND;VALUE=DATE-TIME:20241025T144500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4266@cern.ch DESCRIPTION:Speakers: Kirill Tyrin (National Research Centre "Kurchatov In stitute")\nThe excitation of electron shell of a daughter atom in a neutri noless double β decay causes change in shape of the total energy peak of β particles at the end of the energy spectrum. This fact has important im plications for modelling the energy spectrum of β particles\, which is se nsitive to the mass and Majorana nature of the neutrino. We report the ove rlap amplitudes between the parent atom and the daughter ion for eleven at oms whose two-neutrino double β decay has been observed experimentally. F or these atoms\, the mean excitation energy and its variance were calculat ed using several methods. We performed Dirac-Hartree-Fock computations bas ed on the GRASP software package. The results were compared with calculati ons performed within the non-relativistic Roothaan-Hartree-Fock model\, as well as with estimates obtained using the Thomas-Fermi and Thomas-Fermi-D irac-Weizsäcker models. In about a quarter of the cases\, when the electr on shell structure is inherited from the parent atom\, a transition to the ground state or the lowest-energy excited state occurs. De-excitation of the daughter ion in the latter scenario is accompanied by the emission of photons in the ultraviolet range\, which can serve as an auxiliary signatu re of double-β decay. \n\nThe results are reported in\n\n[1] M.I. Krivoru chenko\, K.S. Tyrin\, and F.F. Karpeshin\, JETP Lett. 117\, 884 (2023).\n\ n[2] M.I. Krivoruchenko\, K.S. Tyrin\, and F.F. Karpeshin\, JETP Lett. 118 \, 470 (2023).\n\n[3] K. S. Tyrin\, M. I. Krivoruchenko\, arXiv:2408.00068 (2024).\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4266/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4266/ END:VEVENT BEGIN:VEVENT SUMMARY:Status and perspectives of the AMoRE experiment DTSTART;VALUE=DATE-TIME:20241025T134500Z DTEND;VALUE=DATE-TIME:20241025T140000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4290@cern.ch DESCRIPTION:Speakers: Vaily Kornoukhov (MEPhI)\nAMoRE (Advanced Mo based R are process Experiment) is an experiment to search for neutrinoless double -beta decay of 100Mo using scintillating molybdate crystals with metallic magnetic calorimeters as low temperature sensors. The AMoRE-I\, which is t he first stage of the experiment was completed in April 2023 with the best result of a limit of T0ν1/2 > 3\,0x10+24 years at 90% C.L. AMoRE-II main phase experiment\, using 157 kg of lithium molybdate crystals\, will be i nstalled at the Yemi underground laboratory (Yemilab)\, newly constructed at deeper (1 km overburden) and larger space with an experimental area of 2\,600 m2. The goal of AMoRE-II phase is to get a limit of T0ν1/2 > 6x10+ 26 years at 90% C.L. which corresponds to an effective Majorana neutrino m ass in the range of mββ ≤ (0.013 − 0.025) eV after 5 years of operat ion. The results from AMoRE-I and preparation of the AMoRE-II phase will b e presented.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4 290/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4290/ END:VEVENT BEGIN:VEVENT SUMMARY:The DANSS Collaboration: recent results and perspectives DTSTART;VALUE=DATE-TIME:20241023T152000Z DTEND;VALUE=DATE-TIME:20241023T153500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4296@cern.ch DESCRIPTION:Speakers: Igor Alekseev (KCTEP\, NRC KI)\nThe DANSS experiment at Kalininskaya NPP is running for already 8 years \nsince April 2016. Mo re than 8 million inverse beta decay events are already collected. DANSS e xperimental program includes both search for physics beyond the Standard M odel\, like sterile neutrinos or large extra dimensions\, and applied stud ies connected to reactor monitoring using electron antineutrino flux. The model independent exclusion area in the sterile neutrino parameter space f or 3+1 hypothesis extends till $sin^2(2 \\theta) = 0.004$ for $\\Delta m^2 = 0.9$ eV$^2$\, where sensitivity of the experiment is the best. Our data show presence of the antineutrino with energies above 10 MeV with signifi cance 6.8 $\\sigma$. Independent from the NPP standard equipment reactor p ower measurements during 7+ years demonstrated excellent stability with un certainty 1.3% for a three days measurement. \n\n Along with ongoing sta tistics collection DANSS is preparing for an upgrade\, which shell signifi cantly improve energy resolution and also increase the fiducial volume. Th e talk covers recent analysis results\nand the upgrade status.\n\nhttps:// indico.particle.mephi.ru/event/436/contributions/4296/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4296/ END:VEVENT BEGIN:VEVENT SUMMARY:Antineutrino measurements with the iDREAM detector at Kalinin NPP. DTSTART;VALUE=DATE-TIME:20241023T153500Z DTEND;VALUE=DATE-TIME:20241023T155000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4273@cern.ch DESCRIPTION:Speakers: Aldiyar Oralbaev (Kurchatov institute)\nThe iDream ( industrial Detector of REactor Antineutrino for Monitoring) project is aim ed at development of the reactor antineutrino detection technology for an industrial tool creation. The tool can serve for an additional independen t control method of a nuclear reactor operation. The 1 ton Gd doped liquid scintillator neutrino detector is placed under the 3rd energy unit of the Kalinin NPP. We are going to present the results of the detector probatio n during one full fuel cycle\, which duration is equal to 510 effective da ys.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4273/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4273/ END:VEVENT BEGIN:VEVENT SUMMARY:Latest results from Daya Bay experiment based on full dataset DTSTART;VALUE=DATE-TIME:20241023T150500Z DTEND;VALUE=DATE-TIME:20241023T152000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4289@cern.ch DESCRIPTION:Speakers: Vitalii Zavadskyi (Joint Institute for Nuclear Resea rch)\non behalf of Daya Bay Collaboration\n\n The Daya Bay experiment was planned to precisely measure the neutrino oscillation parameters $\\sin^2 2\\theta_{13}$ and $\\Delta m^2_{32}$. The antineutrino flux from six nuc lear reactors was measured by eight identically designed liquid scintillat or detectors at distances from 400 m to 2 km. Four detectors were located in the two near halls and four detectors were located in the far hall. The experiment has accumulated $5.55 \\times 10^6$ candidates of the interact ion of electron antineutrinos during 10 years of operation. The oscillatio n parameters are measured with unprecedented precision: $\\sin^2 2\\theta_ {13} = 0.0851 \\pm 0.0024$\, $\\Delta m^2_{32} = (2.466 ± 0.060) \\times 10^{−3}$ eV$^2$ assuming the normal mass ordering and $\\Delta m^2_{32} = −(2.571 \\pm 0.060) × 10^{−3}$ eV$^2$ assuming the inverted mass or dering.\n\n Results of oscillation analysis based on a full dataset will be presented. Additionally\, results of the search of sterile neutrinos ar e included as well.\n\nhttps://indico.particle.mephi.ru/event/436/contribu tions/4289/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4289/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of the νGeN neutrino experiment at Kalinin NPP DTSTART;VALUE=DATE-TIME:20241023T145000Z DTEND;VALUE=DATE-TIME:20241023T150500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4275@cern.ch DESCRIPTION:Speakers: Alexey Konovalov (MEPhI/ITEP)\nThe νGeN experimenta l setup is deployed at Kalinin Nuclear Power Plant at a distance of 11 m f rom the center of the Unit 3 core. The experiment aims for observation of coherent elastic scattering of reactor antineutrinos off nuclei (CEvNS) an d performs a search of antineutrino magnetic moment (NMM) using a 1.4 kg H PGe detector. Based on the dataset acquired from September 2022 to May 202 3 we report a 90% C.L. upper limit on CEvNS cross-section of 5.0/2.0 times larger than the Standard model prediction depending on the assumption of nuclear recoil quenching factor. The 90% C.L. sensitivity of νGeN to NMM evaluated for the same dataset is $5.3\\cdot10^{−11} \\mu_{B}$\, while t he increase of exposition to 1100 kg$\\cdot$days together with application of a background model allows to reach an upper limit of $2.6\\cdot10^{− 11} \\mu_B$.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4 275/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4275/ END:VEVENT BEGIN:VEVENT SUMMARY:The COHERENT experiment DTSTART;VALUE=DATE-TIME:20241023T142000Z DTEND;VALUE=DATE-TIME:20241023T143500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4260@cern.ch DESCRIPTION:Speakers: Alexander Kumpan (National Research Nuclear Universi ty MEPhI)\nCoherent elastic neutrino nucleus scattering (CEvNS) is a funda mental process within the Standard Model which was observed for the first time in 2017 by the COHERENT experiment on the CsI target at the Spallatio n Neutron Source (SNS) located in Oak Ridge National Laboratory (USA). Thi s process cross section prevails over the cross sections of all other know n neutrino interactions with heavy nuclei within the energy range below 50 MeV due to its dependence on square number of neutrons in the nucleus. Th e main goal of COHERENT is to measure CEvNS on different targets and to ex plore related physics opportunities in the neutrino and BSM physics. After the first observation COHERENT has also succeeded in detection of CEvNS o n Ar and Ge targets with the latter in 2023.\n\nIn this talk we describe t he current status of CEvNS study in the COHERENT experiment and talk about efforts to measure inelastic neutrino interactions with Ar\, I\, O\, Pb a nd Th nuclei. We update our program for neutrino flux measurements at SNS with heavy water detectors. We also present other COHERENT efforts and the search for sterile neutrinos at the Second Target Station of SNS.\n\nhttp s://indico.particle.mephi.ru/event/436/contributions/4260/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4260/ END:VEVENT BEGIN:VEVENT SUMMARY:Experimental study of CEvNS DTSTART;VALUE=DATE-TIME:20241023T140000Z DTEND;VALUE=DATE-TIME:20241023T142000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4257@cern.ch DESCRIPTION:Speakers: Dmitry Akimov (MEPhI)\nA review of worldwide experim ental study of coherent elastic neutrino-nucleus scattering (CEvNS) is giv en.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4257/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4257/ END:VEVENT BEGIN:VEVENT SUMMARY:RED-100 at the Kalinin Nuclear Power Plant: first results and plan s DTSTART;VALUE=DATE-TIME:20241023T143500Z DTEND;VALUE=DATE-TIME:20241023T145000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4291@cern.ch DESCRIPTION:Speakers: Olga Razuvaeva ()\, Olga Razuvaeva (MEPhI)\nRED-100 is a two-phase emission detector with an active volume containing 130 kg o f liquid xenon. The detector was exposed to the antineutrino flux of $1.35 ·10^{13}$ $cm^{−2}s^{−1}$ at a distance of 19 m from the 3.1 GW react or core of Unit 4 of the Kalinin Nuclear Power Plant (KNPP) . The comparis on of count rates measured during the reactor on and off periods shows no statistically significant excess and allows to obtain an upper limit on th e cross-section of coherent elastic scattering of antineutrinos on xenon n uclei.\n\nhttps://indico.particle.mephi.ru/event/436/contributions/4291/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4291/ END:VEVENT BEGIN:VEVENT SUMMARY:Low-background technique and physics at BNO DTSTART;VALUE=DATE-TIME:20241023T074000Z DTEND;VALUE=DATE-TIME:20241023T080000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4294@cern.ch DESCRIPTION:Speakers: Vladimir Kazalov (BNO INR RAS)\nLow-background techn ique and physics at BNO\n\nhttps://indico.particle.mephi.ru/event/436/cont ributions/4294/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4294/ END:VEVENT BEGIN:VEVENT SUMMARY:Preliminary results of the new precision measurements of 71Ge life time purposed for a solution of "gallium anomaly" problem. DTSTART;VALUE=DATE-TIME:20241023T080000Z DTEND;VALUE=DATE-TIME:20241023T081500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4283@cern.ch DESCRIPTION:Speakers: Maxim Trushin (PNPI)\nThe possibility of active neut rinos oscillation into the sterile neutrinos is one of the most discussed topics of neutrino physics nowadays. Experimental evidences favoring for t he oscillations were obtained from radiochemical gallium-germanium (Ga-Ge) experiments SAGE\, GALLEX/GNO and BEST. Especially the latest data from B EST experiment have revealed convincingly\, at the level of 5σ\, a 20% de ficit of the neutrinos detected from an artificial neutrino source – the effect called as “gallium anomaly". \n This deficit of the neutrinos wa s established\, in particular\, by taking into the calculations the half-l ife value of 71Ge radionuclide. Meanwhile\, the half-life value of 71Ge\, which is considered to be relevant at present days (T1/2=11.43 days)\, wa s obtained in 1985 and this value diverges significantly (up to ~10σ) fro m the results of earlier measurements performed in 1950s. By application i n the calculations the somewhat greater 71Ge half-life value than the acce pted one\, the gallium anomaly can be eliminated or its statistical reliab ility can be significantly reduced.\n The aim of the presented work is to verify the validity of 71Ge half-life value determined previously. The 71G e isotope was obtained by the irradiation of natural germanium wafer in th e neutron beam of PNPI accelerator. Spectra of 71Ge were measured with sev eral Si and Ge detectors during with the exposure periode over six months. More details about the measurement procedure and the obtained experimenta l results will be presented at the Conference.\n\nhttps://indico.particle. mephi.ru/event/436/contributions/4283/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4283/ END:VEVENT BEGIN:VEVENT SUMMARY:Commissioning of 3D-segmented neutrino detector SuperFGD in the T2 K neutrino beam DTSTART;VALUE=DATE-TIME:20241023T071000Z DTEND;VALUE=DATE-TIME:20241023T072500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4281@cern.ch DESCRIPTION:Speakers: Angelina Chvirova (INR RAS)\nThe long baseline neutr ino oscillation experiment T2K [1] is aiming at searching for CP violation in the neutrino sector and precision measurements of neutrino oscillation parameters. T2K has obtained results indicating CP violation with more than 90% confidence level [2]. In the T2K experiment\, the neutrino beam g enerated at J-PARC is measured at the near detector ND280 located 280m dow nstream from the proton target. The ND280 was recently upgraded to reduce systematic errors and improve measurement of the neutrino beam before osci llations. A new scintillation tracker Super Fine-Grained Detector (SuperFG D) consists of about 2 million scintillator cubes\, each of 1 cm3 [3]. The signal from each cube is read out by three orthogonal WLS fibers and dete cted by micropixel photosensors MPPC. The detector has a high light yield for charged particles\, a good time resolution and a low detection thresho ld. SuperFGD is a more efficient neutrino detector which selects high angl e and low momentum particles\, accumulate larger sample of neutrino intera ctions\, and detect neutrons. SuperFGD was installed in the ND280 pit at J -PARC in October 2023\, and started full data taking in June 2024. The cal ibration of SuperFGD readout channels using LED system and cosmic muons wi ll be presented. Detection of muon neutrinos in SuperFGD through charged current in the T2K neutrino beam will be presented and discussed. The emph asis will be put of reconstruction of muons and stopped protons in SuperFG D.\n\nSupported by the RSF grant # 24-12-00271\n\n[1] K.Abe et al. The T2K Experiment\, Nucl. Instrum. Meth. A659 (2011) 106–135.\n\n[2] K.Abe et al. Constraint on the matter–antimatter symmetry-violating phase in neut rino oscillations\, Nature 580 (2020) 7803\, 339-344.\n\n[3] A.Blondel et al. A fully active fine-grained detector with three readout views\, JINST 13 (2018) 02\, P02006.\n\nhttps://indico.particle.mephi.ru/event/436/cont ributions/4281/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4281/ END:VEVENT BEGIN:VEVENT SUMMARY:Search for heavy neutrinos using T2K near detector ND280 DTSTART;VALUE=DATE-TIME:20241023T065500Z DTEND;VALUE=DATE-TIME:20241023T071000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4278@cern.ch DESCRIPTION:Speakers: Konstantin Gorshanov (The Institute for Nuclear Rese arch of the RAS)\nThe analysis presented in this work aims at the study of heavy neutrinos (N) with masses $\n\nhttps://indico.particle.mephi.ru/eve nt/436/contributions/4278/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4278/ END:VEVENT BEGIN:VEVENT SUMMARY:Calculation of the sensitivity of the CP-violation phase measureme nt in the lepton sector in the P2O experiment DTSTART;VALUE=DATE-TIME:20241023T072500Z DTEND;VALUE=DATE-TIME:20241023T074000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4268@cern.ch DESCRIPTION:Speakers: Anatoly Sokolov (National Research Centre "Kurchatov Institute" – IHEP)\nIn the P2O (Protvino-to-ORCA) experiment\, it is pl anned to direct a neutrino beam from the U-70 proton accelerator (Protvino \, Russia) to the Mediterranean Sea to detect neutrinos with the deep-sea ORCA detector created near the French coast. The purpose of these experime nts is to determine the neutrino mass hierarchy and search for CP-violatio n in the lepton sector. Various options of the construction of the corresp onding neutrino channel at the U-70 accelerator were considered earlier. \ nIn this report different types of uncertainties in the experiment and the contribution of each of them to the CP-violation phase measurement error are studied. This will help to understand their importance and make possib le in future to develop the optimal design of the planned long-baseline ex periments (the type and characteristics of the beam\, detectors\, necessar y integral luminosity). We also calculated the sensitivity of the P2O expe riment in the measurement of the CP-violation phase in the lepton sector f or the previously considered neutrino beams. The choice of the optimal var iant of the neutrino beam ensuring the maximal sensitivity of the P2O expe riment is carried out.\n\nhttps://indico.particle.mephi.ru/event/436/contr ibutions/4268/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4268/ END:VEVENT BEGIN:VEVENT SUMMARY:Status and future prospects of combining the results of three-flav our neutrino oscillation experiments DTSTART;VALUE=DATE-TIME:20241023T061500Z DTEND;VALUE=DATE-TIME:20241023T064000Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4267@cern.ch DESCRIPTION:Speakers: Liudmila Kolupaeva (JINR)\nNeutrino oscillations hav e been actively studied for the last few decades. At the moment\, the unkn own parameters of the theory are the neutrino mass ordering and the phase of CP violation in the lepton sector. One of the ways to increase the sens itivity to these parameters is the combination the results of several expe riments. For many years phenomenologists have been doing such unification with certain approximations taken into account\, so called global fits. Re cently\, experiments themselves started to produce the joint fits. In the past year T2K + SuperK and T2K + NOvA announced their first results.\nIn t his talk status of both joint and global analyses will be discussed as wel l as their future prospects.\n\nhttps://indico.particle.mephi.ru/event/436 /contributions/4267/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4267/ END:VEVENT BEGIN:VEVENT SUMMARY:NOvA recent results of three-flavor oscillation analysis DTSTART;VALUE=DATE-TIME:20241023T064000Z DTEND;VALUE=DATE-TIME:20241023T065500Z DTSTAMP;VALUE=DATE-TIME:20260518T070626Z UID:indico-contribution-218-4270@cern.ch DESCRIPTION:Speakers: Anastasiia Kalitkina (Joint Institute for Nuclear Re search)\nThe NOvA experiment is a long-baseline neutrino experiment design ed to study the oscillation behavior of neutrinos and antineutrinos utiliz ing Fermilab’s Megawatt-capable NuMI neutrino beam. NOvA has been collec ting data for 10 years from two functionally identical tracking calorimete r detectors\, which are situated off the NuMI beam axis and separated by 8 10 km. The experiment’s construction allows us to observe muon (anti)neu trino disappearance and electron (anti)neutrino appearance. Therefore\, we can obtain precision measurements of oscillation parameters\, such as the mass splitting $\\Delta m^{2}_{32}$​ and the mixing angle $\\theta_{23} $​\, as well as get closer to understanding the matter-antimatter asymme try in the universe. In this talk\, an overview of the NOvA experiment and its latest results will be presented.\n\nhttps://indico.particle.mephi.ru /event/436/contributions/4270/ LOCATION: Petrovskiy 1 URL:https://indico.particle.mephi.ru/event/436/contributions/4270/ END:VEVENT END:VCALENDAR