BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Directed flow of protons and deuterons in 3.8A GeV Xe+Cs(I) collis ions at the BM@N experiment DTSTART;VALUE=DATE-TIME:20261028T063000Z DTEND;VALUE=DATE-TIME:20261028T064500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6529@cern.ch DESCRIPTION:Speakers: Valery Troshin (JINR\, MEPhI)\nIn heavy-ion collisio ns at a beam energy of 3.8A GeV\, a dense baryonic medium is formed in the nuclear overlap zone. The anisotropic flow of produced particles provides insight into the transport properties and equation of state (EoS) of stro ngly interacting matter. This contribution presents preliminary results on the directed flow ($v_1$) of protons and deuterons in Xe+Cs(I) collisions at 3.8A GeV\, obtained with the BM@N experiment. The results are compared with available world data and different model predictions.\n\nhttps://ind ico.particle.mephi.ru/event/626/contributions/6529/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6529/ END:VEVENT BEGIN:VEVENT SUMMARY:String melting scenario of hadron production and fractal SePaC-ana lysis of AMPT AuAu events at energy 200 GeV DTSTART;VALUE=DATE-TIME:20261029T145000Z DTEND;VALUE=DATE-TIME:20261029T150500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6362@cern.ch DESCRIPTION:Speakers: Tatiana Dedovich (Join Institute for Nuclear Reseach )\nThe search for extreme states associated with changes in the phase of n uclear matter is one of the key tasks of high-energy heavy-ion physics. It is known that systems exhibit fractal behavior near phase transitions. Th e fractality (intermittency) of identified charged hadrons in the pseudora pidity range |η| 2.0 GeV/c. The slope of the non-fractal pT-spectra depe nds on the string melting scenario. The kink position of the fractal pT-sp ectra and the behavior of the fractal dimension (DF) spectra depend on the event centrality. The established patterns are applicable for comparison with experimental data.\n\n1. M. I. Abdulhamid et al.\, Phys. Lett. B 845\ ,138165 (2023).\n2. Z.W. Lin\, C.M. Ko\, Phys. Rev. C 65\, 034904 (2002).\ n3. Z.W. Lin et al.\, Phys. Rev. C 72\, 064901 (2005).\n4. T. G. Dedovich\ , M.V. Tokarev\, Phys. Part. Nucl. Lett. 9\, 552 (2012).\n5. T. G. Dedovic h\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 10\, 481 (2013).\n6. T. G. Dedo vich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 10\, 491 (2013).\n7. T. G. D edovich\, M.V. Tokarev\, Phys. Part. Nucl. Lett. 18\, 93 (2021).\n\nhttps: //indico.particle.mephi.ru/event/626/contributions/6362/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6362/ END:VEVENT BEGIN:VEVENT SUMMARY:MPD potential for resonance property measurements in Xe+W collisio ns at 2.5A GeV at NICA DTSTART;VALUE=DATE-TIME:20261029T132000Z DTEND;VALUE=DATE-TIME:20261029T133500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6300@cern.ch DESCRIPTION:Speakers: Dmitry Ivanishchev (NRC «Kurchatov Institute» - PN PI\, SPbPU)\nThe study of nuclear matter formed in relativistic heavy-ion collisions is one of the key tasks in high-energy physics. In addition to the quark-gluon plasma produced in such colliding systems\, the hadron gas phase that represents the final stage of the collision is of particular i nterest. Investigation of resonance production in relativistic heavy-ion c ollisions serves as a primary tool for analyzing this hadronic phase. Due to their short lifetimes\, resonances act as indicators of the dynamic equ ilibrium between rescattering and regeneration processes. Furthermore\, th eir production allows for the investigation of a wide range of physical ef fects\, such as the possible restoration of chiral symmetry\, strangeness enhancement\, baryon anomaly at intermediate transverse momenta\, flavor d ependence of parton energy loss at high momenta\, and others. Currently\, the most intriguing region of the QCD matter phase diagram\, where the cri tical point and a first-order phase transition are expected to be discover ed\, lies within the area of high net-baryon densities and moderate temper atures (at √sNN = 2-15 GeV). The Nuclotron-based Ion Collider fAcility ( NICA)\, a superconducting proton and heavy-ion collider under construction at JINR (Dubna)\, along with the Multi-Purpose Detector (MPD) experiment\ , is specifically aimed at exploring this region by studying the nuclear m edium formed in relativistic heavy-ion collisions at low temperatures and high net-baryon densities. According to the current schedule\, some of the first runs at the NICA accelerator complex will involve xenon nucleus (Xe ) collisions with a fixed tungsten (W) target at an incident beam kinetic energy of Ekin = 2.5A GeV. In this work\, the feasibility of the MPD detec tor operating in the fixed-target mode to measure the characteristics of m eson resonances was investigated. The study was performed for Xe+W collisi ons at an energy of 2.5 GeV/nucleon. Since the MPD detector is currently i n its preparation phase for commissioning\, all processes from the initial nuclear collision to the detector response were reproduced using Monte Ca rlo simulations. Based on the results of this work\, the acceptance region s in rapidity\, transverse momentum\, and event centrality accessible for physics analysis were determined.\n\nWe acknowledge support from Russian M inistry of Education and Science\, state assignment for fundamental resear ch (code FSEG-2025-0009)\n\nhttps://indico.particle.mephi.ru/event/626/con tributions/6300/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6300/ END:VEVENT BEGIN:VEVENT SUMMARY:Fragmentation of isospin-symmetric $^{20}$Ne at the LHC: a challen ge and an opportunity DTSTART;VALUE=DATE-TIME:20261029T133500Z DTEND;VALUE=DATE-TIME:20261029T135000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6302@cern.ch DESCRIPTION:Speakers: Igor Pshenichnov (INR RAS\, MIPT(NRU))\nIn 2025\, da ta on $^{16}$O–$^{16}$O and $^{20}$Ne–$^{20}$Ne collisions were collec ted at the LHC for the first time. Unlike in the LHC runs with $^{208}$Pb beams conducted since 2010\, a significant fraction of spectator fragments emitted in collisions of light isospin-symmetric nuclei\, such as $^{16}$ O and $^{20}$Ne\, also have equal numbers of neutrons and protons. Consequ ently\, these fragments exhibit magnetic rigidity similar to that of beam nuclei. As the transverse momenta of spectator fragments are expected to b e close to the nominal beam momentum\, such $2Z=A$ secondary nuclei may ci rculate in the LHC. This poses a challenge for tuning the collider beam op tics to suppress the circulation of $2Z=A$ fragments\, in order to prevent their collisions with beam nuclei and reduce contamination of the $^{16}$ O–$^{16}$O and $^{20}$Ne–$^{20}$Ne data due to beam transmutation [1]. \n\nThe cross sections of production of $^2$H\, $^4$He\, $^{6}$Li\, $^{10} $B\, $^{12}$C\, and $^{14}$N spectator fragments in $^{16}$O–$^{16}$O we re estimated [2] with the Abrasion-Ablation Monte Carlo for Colliders mod el with pre-equlibrium Minimum Spanning Tree clustering (AAMCC-MST) [3]. While contamination of $^{16}$O–$^{16}$O data is considered negligible b ased on recently collected data [4]\, this has not yet confirmed for $^{2 0}$Ne–$^{20}$Ne collisions.\n\nWe report the results of AAMCC-MST modell ing of the production of spectator neutrons\, protons\, as well as $^2$H\, $^4$He\, $^{6}$Li\, $^{10}$B\, $^{12}$C\, $^{14}$N\, $^{16}$O\, and $^{18 }$F fragments in $^{20}$Ne–$^{20}$Ne collisions at $\\sqrt{s_{NN}}=5.36$  TeV. Prior to simulating $^{20}$Ne fragmentation at the LHC\, we validat ed AAMCC-MST using data on fragmentation of $\\sim 0.4A$–5$A$ GeV $^{20} $Ne and $^{22}$Ne projectiles in nuclear emulsion and on elemental targets  [5\,6]. Three density profiles for $^{20}$Ne and $^{22}$Ne were employed : a deformed Woods–Saxon\, a five–$\\alpha$ bi-pyramidal configuration \, and a spherical profile for $^{20}$Ne. Calculations were also performed with and without MST clustering. Comparisons of results obtained with dif ferent calculation options demonstrate the sensitivity to both the details of the nuclear structure of $^{20\,22}$Ne and the fragmentation modelling .\n\nIn all previous studies of neon fragmentation\, neither protons nor n eutrons were registered. The data on spectator neutrons and protons from $ ^{20}$Ne–$^{20}$Ne collisions collected by the ALICE Zero Degree Calorim eters (ZDC) [7] will provide a unique opportunity to study fragmentation o f isospin-symmetric $^{20}$Ne. Following validation of fragmentation model s with these new data\, new methods of luminosity monitoring and centralit y determination for collisions of light nuclei can be developed with invol ving both neutron and proton ZDCs.\n\nReferences\n\n[1] G. Nijs\, W. van d er Schee\, Phys. Lett. B 872 (2026) 140061\n\n[2] A. Svetlichnyi\, S. Sa venkov\, R. Nepeivoda\, I. Pshenichnov\, Physics 5 (2023) 38\n\n[3] R. N epeivoda\, A. Svetlichnyi\, N. Kozyrev\, I. Pshenichnov\, Particles 5 ( 2022) 40\n\n[4] A. Hayrapetyan\, V. Makarenko\, A. Tumasyan et al.\, Ph ys. Rev. Lett. 136 (2026) 162301\n\n[5] N.N. Abd-Allah\, M. Mohery\, Cze choslov. J. Phys. 51 (2001) 1189\n\n[6] A.T. Neagu\, E. Firu\, M. Haidu c\, J. Phys. G Nucl. Part. Phys. 40 (2013) 035102\n\n[7] C. Oppedisano\, R. Arnaldi\, E. Chiavassa\, Nucl. Phys. B - Proc. Suppl. 197 (2009) 206\ n\nhttps://indico.particle.mephi.ru/event/626/contributions/6302/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6302/ END:VEVENT BEGIN:VEVENT SUMMARY:Asymmetric fission in heavy ion collisions DTSTART;VALUE=DATE-TIME:20261029T135000Z DTEND;VALUE=DATE-TIME:20261029T140500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6303@cern.ch DESCRIPTION:Speakers: Anna Kulikovskaya (NRC Kurchatov Institute)\nMomentu m distributions of light fragments produced in asymmetric fission in heav y ion collisions provide information on reaction dynamics and breakup mech anisms of spectator systems. At small emission angles relative to the beam direction and with high momentum resolution\, energy spectra of light fra gments exhibit a double-humped structure contrary to the Gaussian profile expected in usually accepted statistical approach. This effect has been se en in two experiments only [1\,2]. This report presents results on the fra gmentation of iron nuclei into light fragments at the energy of 230 MeV/nu cleon measured in the FRAGM experiment at the TWAC heavy ion accelerator c omplex [1\,3]. It is shown that the measured momentum spectra exhibit this effect and it is most pronounced for protons and tends to diminish for he avier fragments. Furthermore\, it is demonstrated that the observation of this effect in both mentioned above experiments can be explained within th e framework of certain nucleus-nucleus interaction models which take into account the Coulomb interaction.\n\n[1] B. M. Abramov et al.\, EPJ Web Con f. 204\, 03008 (2019) 03008.\n[2] P. Napolitani et al.\, Phys. Rev. C 70 \, 054607 (2004).\n[3] A. A. Kulikovskaya and M. A. Martemianov\, Phys.Par t.Nucl. 56\, 1077 (2025).\n\nhttps://indico.particle.mephi.ru/event/626/co ntributions/6303/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6303/ END:VEVENT BEGIN:VEVENT SUMMARY:Light hadron spectra analysis for Xe+W collisions at $E_{kin}$ = 2 .5 GeV in the MPD experiment DTSTART;VALUE=DATE-TIME:20261029T142000Z DTEND;VALUE=DATE-TIME:20261029T143500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6304@cern.ch DESCRIPTION:Speakers: Natalia Kolomoyets (JINR)\nThe Multi-Purpose Detecto r (MPD) at the NICA complex in Dubna is designed to investigate the strong ly interacting matter in the vicinity of the QCD critical point. The prope rties of the medium created in heavy-ion collisions can be determined from the analysis of the hadron spectra. We present reconstructed invariant tr ansverse-momentum spectra of the light hadrons ($\\pi^\\pm$\, $K^\\pm$\, $ p$) produced in simulated Xe+W collisions at $E_{kin}$ = 2.5 GeV in the fi xed-target mode of the MPD experiment. A good agreement between the recons tructed and generated data is observed. Preliminary estimates of the mediu m parameters can obtained from a simultaneous Blast-Wave fit to the spe ctra of positively charged particles.\n\nhttps://indico.particle.mephi.ru/ event/626/contributions/6304/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6304/ END:VEVENT BEGIN:VEVENT SUMMARY:FEATURES OF THE NON-EQUILIBRIUM QUANTUM HYDRODYNAMIC APPROACH FOR DESCRIBING THE EMISSION OF SECONDARY PARTICLES IN COLLISIONS OF HEAVY IONS OF HIGH AND INTERMEDIATE ENERGIES DTSTART;VALUE=DATE-TIME:20261029T140500Z DTEND;VALUE=DATE-TIME:20261029T142000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6305@cern.ch DESCRIPTION:Speakers: Alexander Dyachenko ()\nA.T. D’yachenko$^{1\,2}$\n \n$^1$B.P. Konstantinov Petersburg Nuclear Physics Institute\, National Re search Center "Kurchatov Institute"\, Gatchina\, Russia \n\n$^2$Emperor Al exander I Petersburg State Transport University\, St. Petersburg\, Russia\ n\n Based on the effective Klein–Fock–Gordon equation [1]\, a descrip tion is given of the emission of cumulative protons\, pions\, and fragment s (p\, π\, K\, d\, t) in heavy-ion collisions at energies of the U-70 acc elerator (IHEP\, Protvino) [2\,3]\, КI (Moscow) [4\,5]\, and the BM@N col laboration (JINR\, Dubna) [6-8]. The advantage of this approach in describ ing the experimental data of IHEP and KI for the emission of protons\, pio ns\, kaons\, and fragments of H\, $^2$H\, $^3$H\, $^3$He\, $^4$He\, $^6$Li \, $^7$Li\, compared to other theoretical models\, is shown. \n\nAn explan ation for the splitting effect in the momentum spectra of protons and ligh t fragments in the (230 MeV/A)$^{56}$Fe+$^9$Be→f+X reaction in the FRAGM (KI) experiment [9] is provided. This splitting is explained by the nucle on potential\, which depends quadratically on the distance from the partic le emission center. The spectrum splitting disappears with increasing ion collision energy and upon transition to heavier fragments.\n\nWhen describ ing the available experimental data\, it is essential to identify the resu lting hot spot\, which is compatible with the hydrodynamic model of hot je t separation in heavy-ion collisions [10]\, and which has recently been de veloped in elementary particle physics [11].\n\n1. D’yachenko A.T.\, Ph ys. At. Nucl. $\\bf{87}$\, 646 (2024). \n2. D’yachenko A.T.\, Phys. At. Nucl. $\\bf{87}$\, 125 ( 2024).\n3. D’yachenko A.T.\, Phys. Part. Nucl . $\\bf{55}$\, 786 (2024).\n4. D’yachenko A.T.\, Mitropolsky I.A.\, Phy s. At. Nucl. $\\bf{85}$\, 1053 (2022).\n5. D’yachenko A.T.\, Phys. At. Nucl. $\\bf{88}$\, 805 ( 2025).\n6. D’yachenko A.T.\, Phys. Part. Nucl. $\\bf{57}$\, 365 ( 2026).\n7. D’yachenko A.T.\, Phys. Part. Nucl. $\\b f{57}$\, 1018 ( 2026).\n8. Afanasiev S. et al. BM@N Collaboration\, JHEP $ \\bf{07}$\, 174 (2023).\n9. Abramov B.M. et al. EPJ Web of Conferences $\\ bf{204}$\, 03008 (2019).\n10. Khangulyan V.A.\, Galitsky V.M.\, Ivanov Yu. B.\, JETP Lett\, $\\bf{33}$\, 484 (1981).\n11. Blok R.\, Segev R.\, Strikm an M.\, Eur. Phys. J. C $\\bf{83}$\,:415 (2023)\n\nhttps://indico.particle .mephi.ru/event/626/contributions/6305/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6305/ END:VEVENT BEGIN:VEVENT SUMMARY:Hadron transverse momentum spectra in O+O\, Kr+Kr\, and Xe+Xe coll isions at $\\sqrt{s_{NN}} = 6$ GeV using the UrQMD and SMASH models within Tsallis statistics DTSTART;VALUE=DATE-TIME:20261029T143500Z DTEND;VALUE=DATE-TIME:20261029T145000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6306@cern.ch DESCRIPTION:Speakers: Anastasiia Vasilieva (National Research Nuclear Univ ersity MEPhI)\nHadron transverse momentum ($p_{T}$) spectra serve as a sen sitive probe of matter produced in relativistic nuclear collisions\, with statistical frameworks being widely used to extract its thermodynamic para meters. Despite extensive research into particle production across a wide range of collision energies\, of particular interest is a detailed analysi s of $p_{T}$ spectra under the conditions of the Spin Physics Detector (SP D) experiment at the NICA collider. To address this\, the current study pr esents generator-level results on hadron $p_{T}$ spectra in O+O\, Kr+Kr\, and Xe+Xe collisions at $\\sqrt{s_{NN}} = 6$ GeV. Events are simulated usi ng two transport approaches: the Ultrarelativistic Quantum Molecular Dynam ics (UrQMD) and the Simulating Many Accelerating Strongly-interacting Hadr ons (SMASH) models. The calculated $p_{T}$ distributions are analyzed with in the framework of non-extensive Tsallis statistics. The phenomenological Tsallis distribution is fitted to the charged hadron spectra from both ge nerators. Furthermore\, the analysis of the UrQMD events is extended to in clude identified hadron spectra\, for which the fit is performed using the exact $p_{T}$ distribution of the Tsallis-3 statistics. The study provide s a comparison of the results on charged hadron spectra between the UrQMD and SMASH models. The dependence of the extracted parameters on centrality and system size is presented for both charged and identified hadrons. For the identified particles\, the parameters are further examined across dif ferent species. The obtained results may be relevant for future experiment al measurements at the NICA collider.\n\nhttps://indico.particle.mephi.ru/ event/626/contributions/6306/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6306/ END:VEVENT BEGIN:VEVENT SUMMARY:Comparison of LHC results with the predictions of the Modified Gla uber Model: centrality dependence of total charged-particle yields in O+O and Ne+Ne collisions DTSTART;VALUE=DATE-TIME:20261029T150500Z DTEND;VALUE=DATE-TIME:20261029T152000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6307@cern.ch DESCRIPTION:Speakers: Svetlana Simak (LUHEP\, SPbSU)\nWe present a compari son of Monte Carlo modified Glauber model predictions with recent measurem ents of the centrality dependence of total charged-particle yields in ¹ ⁶O+¹⁶O and ²⁰Ne+²⁰Ne collisions at the LHC. The model extends t he Standard Glauber approach by introducing a single parameter\, k\, the m ean fractional momentum loss per inelastic nucleon-nucleon collision due t o multiparticle production\; this reduces the inelastic cross section and multiplicity in subsequent nucleon collisions. The parameter k was fixed f rom the previously successful description of the non-linear centrality dep endence of charged-particle yields measured by ALICE in Pb+Pb collisions\, and the resulting predictions are confronted here with the newly availabl e data for the light collision systems.\n\nThe authors acknowledge Saint-P etersburg State University for a research project ID: 153212394\n\nhttps:/ /indico.particle.mephi.ru/event/626/contributions/6307/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6307/ END:VEVENT BEGIN:VEVENT SUMMARY:Excitation Functions of Strange-Particle Production in Central Hea vy-Ion Collisions from RHIC to LHC: Particle Yields\, mean (p_T) and Tran sverse Energy Density ratios DTSTART;VALUE=DATE-TIME:20261029T152000Z DTEND;VALUE=DATE-TIME:20261029T153500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6308@cern.ch DESCRIPTION:Speakers: Olga Shaposhnikova ()\nWe present an extended analys is of the transverse energy density ⟨dE_T/dy⟩ at midratpiidty and rele vant values of multiplicity density ⟨dN/dy⟩ and mean transverse mome nta ⟨p_T⟩ for identified strange particles produced in the most centr al A+A collisions at high energies. The study is based on published experi mental data on transverse momentum distributions and particle yields obtai ned in Au+Au\, Pb+Pb\, and Xe+Xe collisions in the energy range √(S_NN) from 39 GeV to 5.44 TeV . \n Particular attention is paid to the quantities entering the calculation of ⟨dE_T/dy⟩: the particle rapidi ty density ⟨dN/dy⟩ and the mean transverse momentum ⟨p_T⟩ measured at midrapidity . We investigate their dependence on the collision energy √(S_NN ) for different strange-particle species and compare the power-l aw fits of the corresponding excitation functions.\nThe obtained energy de pendences of ⟨dN/dy⟩\, ⟨p_T⟩\, and ⟨dE_T/dy⟩ are analyzed to t est the hypothesis of a common production mechanism for particles with dif ferent strange-quark content. The results are discussed within the Multipo meron exchange model and the Bjorken approach to energy density estimation in relativistic heavy-ion collisions.\nThe authors acknowledge Saint-Pete rsburg State University for a research project ID: 153212394\n\nhttps://in dico.particle.mephi.ru/event/626/contributions/6308/ LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6308/ END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of $e^{+}$-$e^{-}$ pairs in the MPD Experiment at NICA Complex DTSTART;VALUE=DATE-TIME:20261029T153500Z DTEND;VALUE=DATE-TIME:20261029T155000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6310@cern.ch DESCRIPTION:Speakers: Sudhir Pandurang Rode (JINR)\nThe Multi-Purpose Dete ctor (MPD) experiment is a flagship heavy-ion experiment of the NICA facil ity at JINR\, Dubna\, currently under commissioning. The experiment will o perate in the energy range $\\sqrt{s_{NN}}$ = 4-11 GeV in collider mode an d $\\sqrt{s_{NN}}$ = 2.4-3.5 GeV in fixed-target mode\, together covering the high net-baryon density region of the QCD phase diagram. Dielectron me asurements in heavy-ion collisions probe the temperature of the fireball a s well as in-medium modification of the vector meson spectral function.\n\ nThe MPD experiment offers excellent track reconstruction and electron ide ntification capabilities\, making it well suited for the measurements of d ielectrons. In this presentation\, after briefly reporting the current sta tus of the NICA facility and the MPD experiment\, we present the dielectro n analysis methodology developed for the MPD experiment as established and validated in the collider-mode. We will further present preliminary perfo rmance results of MPD in dielectron measurements in the fixed-target confi guration.\n\nhttps://indico.particle.mephi.ru/event/626/contributions/6310 / LOCATION: Conference Hall 4 URL:https://indico.particle.mephi.ru/event/626/contributions/6310/ END:VEVENT BEGIN:VEVENT SUMMARY:Prospects for MPD operation at NICA in the fixed-target mode. DTSTART;VALUE=DATE-TIME:20261028T125000Z DTEND;VALUE=DATE-TIME:20261028T130500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6294@cern.ch DESCRIPTION:Speakers: Victor Riabov (PNPI\, MEPHI)\nThe Multi-Purpose Dete ctor (MPD) at NICA is primarily designed for collider experiments at $\\sq rt{s_{NN}} = 4–11$ GeV. A recently proposed program of fixed-target expe riments extends its research potential\, allowing for the investigation of dense baryonic matter in ion collisions at lower center-of-mass energies $\\sqrt{s_{NN}} = 2.4–3.5$ GeV. Running in the fixed-target mode require s a careful revision of the MPD efficiency for event triggering\, as well as its performance in particle reconstruction and identification\, momentu m resolution and geometric acceptance.\n\nIn this report\, we present a re view of the physics performance of the MPD operating in the fixed-target m ode\, including the results of physics feasibility studies for measuring a wide range of physics observables in Xe+W collisions at $\\sqrt{s_{NN}} = 2.87$ GeV. The reconstruction of identified charged and neutral light had rons\, strange mesons and baryons\, short-lived resonances\, and light nuc lei is discussed. The obtained results demonstrate that the MPD in the fix ed-target configuration preserves sufficient trigger efficiency and geomet rical acceptance\, offering a powerful means to advance our understanding of the QCD phase diagram at high net-baryon density.\n\nhttps://indico.par ticle.mephi.ru/event/626/contributions/6294/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6294/ END:VEVENT BEGIN:VEVENT SUMMARY:Bose-Einstein correlations of identical charged kaons in p–Pb an d Pb–Pb collisions at √sNN = 5.02 TeV by ALICE at the LHC DTSTART;VALUE=DATE-TIME:20261028T130500Z DTEND;VALUE=DATE-TIME:20261028T132000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6295@cern.ch DESCRIPTION:Speakers: Konstantin Mikhaylov (ITEP\, JINR)\nDue to quantum s tatistical effects and final-state interactions\, momentum correlations be tween two or more particles emitted with small relative velocities (or\, e quivalently\, small relative momenta in their center-of-mass system) provi de a sensitive tool for probing the spatiotemporal characteristics of part icle-production processes at femtometer scales (10^−15 m). Kaons are par ticularly valuable for studying Bose–Einstein correlations because they are less affected by resonance decays than more abundantly produced pions and\, therefore\, provide a more direct probe of the properties of the pri mary particle-emitting source created in high-energy collisions. Combined with femtoscopic measurements of pions and protons\, kaon correlations als o offer important information about the collective dynamics and evolution of strongly interacting matter. We report on the results of the femtoscop ic analysis of Bose–Einstein correlations of charged kaons in p–⁠Pb and Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector. Both measurements show that the extracted source radii increase with charged-pa rticle multiplicity and decrease with increasing pair transverse momentum. This behavior is characteristic of space–momentum correlations associa ted with collective expansion and can be described within hydrodynamic mod els. The time of maximum kaon emission is determined through a three-dimen sional femtoscopic analysis for both collision systems. The value obtained in p-Pb collisions is comparable to that observed in highly peripheral Pb –Pb collisions\, suggesting that the evolution of kaon emission is simil ar in p–Pb and peripheral Pb–Pb collisions. The EPOS-3 hadronic intera ction model reproduces the measured source sizes in p–Pb collisions reas onably well\, except for an underestimation of the source size in the most central collisions. For the Pb–Pb data\, the integrated hydrokinetic mo del provides a good description of the transverse-momentum dependence of t he source radii\, except for the outward component in the longitudinally c omoving system (LCMS).\n\nhttps://indico.particle.mephi.ru/event/626/contr ibutions/6295/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6295/ END:VEVENT BEGIN:VEVENT SUMMARY:Two-Pion and Two-Kaon Femtoscopic Correlations in Au+Au Collisions at √s_NN =14.6 and 19.6 GeV from EPOS4 DTSTART;VALUE=DATE-TIME:20261028T132000Z DTEND;VALUE=DATE-TIME:20261028T133500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6296@cern.ch DESCRIPTION:Speakers: Egor Alpatov (NRNU MEPhI)\, Alexey Povarov (NRNU MEP hI)\nFemtoscopic correlations of identical particles provide a powerful to ol for probing the space-time structure and dynamical evolution of the par ticle-emitting source created in relativistic heavy-ion collisions. Measur ements of femtoscopic radii constrain the characteristic homogeneity lengt hs of the expanding system and their dependence on collision geometry and particle momentum\, thereby providing sensitivity to collective expansion and freeze-out dynamics. The intermediate collision-energy region is parti cularly important\, as it bridges the high-energy\, low-baryon-density reg ime and the baryon-rich matter produced at lower energies\, offering an op portunity to study how the space-time evolution of the system changes with collision energy. Comparing different particle species\, in particular pi ons and kaons\, provides additional constraints because of their different masses\, production mechanisms\, and contributions from resonance decays. \n\nWe present a systematic femtoscopic study of identical charged pion an d kaon pairs in Au+Au collisions at $\\sqrt{s_{\\mathrm{NN}}}=14.6$ and $1 9.6$ GeV simulated with the EPOS4 model. Three-dimensional two-particle co rrelation functions are constructed in the Bertsch–Pratt decomposition o f the relative momentum into the out\, side\, and long components. The fem toscopic parameters are extracted as functions of collision centrality and pair transverse momentum\, $k_{\\mathrm{T}}$\, for both pion and kaon pai rs. The centrality and $k_{\\mathrm{T}}$ dependences of the extracted $R_{ \\mathrm{out}}$\, $R_{\\mathrm{side}}$\, and $R_{\\mathrm{long}}$ radii ar e compared between pions and kaons and between the two collision energies. These results characterize the space-time structure and momentum dependen ce of particle emission predicted by EPOS4 in the intermediate-energy regi me and provide a baseline for comparisons with experimental femtoscopic me asurements.\n\nhttps://indico.particle.mephi.ru/event/626/contributions/62 96/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6296/ END:VEVENT BEGIN:VEVENT SUMMARY:Higher-order strongly intensive observables for forward–backward multiplicity fluctuations DTSTART;VALUE=DATE-TIME:20261028T135000Z DTEND;VALUE=DATE-TIME:20261028T140500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6297@cern.ch DESCRIPTION:Speakers: Evgeny Andronov (Saint Petersburg State University)\ nHigher-order multiplicity fluctuations can reveal features of particle pr oduction that are not accessible through variances and two-particle correl ations alone. Their interpretation\, however\, is complicated by fluctuati ons in the number of particle-emitting sources. We develop a systematic co nstruction of strongly intensive observables that remove this dependence w ithin the independent-source model.\n\nStarting from the relations between the joint cumulants of observed multiplicities\, the emission properties of a single source\, and the source-number distribution\, we construct ind ependent combinations at successive orders. We discuss their normalization relative to independent particle production\, extending the approach used for the second-order quantities Sigma and Delta. Particular attention is paid to the fourth-order observable Upsilon and its relation to other inde pendent combinations at the same order. The study establishes the conditio ns under which source-number fluctuations cancel and explores the addition al information carried by higher-order strongly intensive observables.\n\n The authors acknowledge Saint-Petersburg State University for a research p roject ID: 153212394\n\nhttps://indico.particle.mephi.ru/event/626/contrib utions/6297/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6297/ END:VEVENT BEGIN:VEVENT SUMMARY:Anisotropic flow of charged hadrons in O+O collisions at √s_NN = 6 GeV in the UrQMD model. DTSTART;VALUE=DATE-TIME:20261028T140500Z DTEND;VALUE=DATE-TIME:20261028T142000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6298@cern.ch DESCRIPTION:Speakers: Maxim Morozov ()\nIn heavy-ion collision\, the globa l collectivity of final-state particles can be quantified by anisotropic f low coefficients ($v_n$). These coefficients carry information about the i nitial geometry of the system\, the equation of state\, and the expansion dynamics of strongly interacting matter. While $v_n$ studies have mainly f ocused on the large collision systems at the energies relevant to the NICA program ($\\sqrt{s_{NN}}$ = 4.5-11 GeV)\, light and intermediate-size sys tems remain largely unexplored in this energy domain. O+O collisions at lo w energies represent an intermediate-size system\, needed to establish sys tem-size dependence of $v_n$ at high baryon density.\n\nIn this work\, O+O collisions at $\\sqrt{s_{NN}}$ = 6 GeV are simulated using the UrQMD mode l to study the directed\, elliptic and triangular flow of charged hadrons\ , which may help to establish the limits of hydrodynamic-like behavior as a function of system size\, and serve as a reference for future experiment al studies at NICA.\n\nhttps://indico.particle.mephi.ru/event/626/contribu tions/6298/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6298/ END:VEVENT BEGIN:VEVENT SUMMARY:Influence of Gaussian and non-Gaussian elementary sources on high- order multiplicity cumulants in a toy model of relativistic nucleus-nucleu s collisions DTSTART;VALUE=DATE-TIME:20261028T133500Z DTEND;VALUE=DATE-TIME:20261028T135000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6299@cern.ch DESCRIPTION:Speakers: Alexandr Zarshchikov (Saint Petersburg State Univers ity)\nA.Zarchikov\, G.A.Feofilov*\n \n Saint-Petersburg University \, St. Petersburg State University\, SPbSU\,\n SPbU\, 7/9 Universit etskaya nab.\, St. Petersburg\, 199034 Russia.\n *e-mail: g.feofilo v@spbsu.ru\nHigh-order cumulants of event-by-event multiplicity distributi ons are widely used in the search for the QCD critical point in relativist ic heavy-ion collisions. Their sensitivity to non-Gaussian fluctuations [1 ] makes them promising observables [2]\, but at the same time they can be strongly affected by non-critical background effects\, in particular by vo lume fluctuations and by the procedure of centrality class selection[3].\n \nIn this work\, we study these effects using a simple toy Monte Carlo mod el of nucleus-nucleus collisions. The collision geometry is described thro ugh the impact parameter and the corresponding number of participant nucle ons. Particle multiplicity is generated as a superposition of elementary n ucleon-nucleon sources. In the first version of the model\, the elementary source is assumed to be Gaussian. We show that even in this case nonzero third- and fourth-order cumulants can appear after selecting events by fin al-state multiplicity\, due to the admixture of events with different coll ision geometry and different effective volume.\n\nThe model is then extend ed to the inclusion of non-Gaussian elementary sources. This allows us to compare two different contributions to high-order cumulants: the intrinsic non-Gaussianity of particle production -- in case of proximity to the c ritical point\, and trivial contribution caused by the volume fluctuation s. Special attention is paid to the comparison of multiplicity-based event -by-event selection of narrow classes of participating nucleons (Npart). \n\nThe results demonstrate that the measured values of high-order cumulan ts may be significantly distorted by centrality and volume fluctuations ev en in the absence of critical dynamics. Therefore\, careful control of the initial geometry and the use of narrow classes of the number of Npart and relevant reduced cumulants are essential for separating possible critical -point signals from the non-critical background contributions.\n\n \nThe a uthors acknowledge Saint-Petersburg State University for a research projec t ID: 153212394\n \nReferences:\n[1]. M. A. Stephanov\, Phys. Rev. Lett. 1 02\, 032301 (2009).\n\n[2]. Hannah Elfner and Berndt Müller 2023\, J. Phy s. G: Nucl. Part. Phys. 50 103001.\n\n[3]. G.Feofilov\, Phys.Part and Nucl .\, 2026\, vol.57\, No.3\, pp 401-406.\n\nhttps://indico.particle.mephi.ru /event/626/contributions/6299/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6299/ END:VEVENT BEGIN:VEVENT SUMMARY:Neutral pion elliptic flow in p+Au\, He+Au and p+Al collisions at 200 GeV DTSTART;VALUE=DATE-TIME:20261028T060000Z DTEND;VALUE=DATE-TIME:20261028T061500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6283@cern.ch DESCRIPTION:Speakers: Snezhana Komarova (Peter the Great St. Petersburg Po lytechnic University)\nIn recent years\, the PHENIX experiment has observe d collectivity in small collision systems. This behavior resembles what is seen in large systems where quark-gluon plasma (QGP) is produced. However \, whether QGP actually forms in small systems is still being debated.\n This work presents measurements of the neutral pion elliptic flow ($v_2$ ) coefficients as a function of $p_T$ for different centrality classes in p+Au\, $^3$He+Au\, and p+Al collisions at 200 GeV using the event plane me thod. In central collisions (0-5%) for $p_T$ from 1 to 3 GeV/c\, the $v_2$ values in $^3$He+Au exceed those in p+Au and p+Al. Moreover\, in all thre e collision systems\, $v_2$ values rise from central to peripheral collisi ons\, with larger values observed in the 40-60% centrality class.\n\nhttps ://indico.particle.mephi.ru/event/626/contributions/6283/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6283/ END:VEVENT BEGIN:VEVENT SUMMARY:Performance for inclusive photon and neutral meson spectra and ani sotropic flow measurements with the MPD experiment at NICA DTSTART;VALUE=DATE-TIME:20261028T073000Z DTEND;VALUE=DATE-TIME:20261028T074500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6285@cern.ch DESCRIPTION:Speakers: Oleg Golosov (NRC "Kurchatov Institute"\, NRNU MEPhI )\nThe MPD experiment will provide particle identification and broad cover age in transverse momentum and rapidity for neutral mesons decaying into p hotons\, using different methodsbased on its electromagnetic calorimeter\, tracking\, and time-of-flight systems. The spectra and anisotropic flow o f neutral mesons may help constrain the properties of the hot and dense nu clear matter created in heavy-ion collisions at NICA collider energies. Mo reover\, subtracting their contribution from inclusive photon spectra and anisotropic flow is necessary for direct-photon measurements.\n\nWe presen t the performance of inclusive photon\, neutral pion\, and eta meson spect ra and anisotropic flow measurements with the MPD experiment at NICA in bo th collider (Bi+Bi @ 9.2 GeV) and fixed-target (Xe+W @ 2.87 GeV) regimes. The study was performed using the latest high-statistics simulations with the UrQMD event generator\, an updated detector response\, and improved re construction and analysis procedures\, including the rejection of charged particles using the time-of-flight detector and machine-learning-based ide ntification of converted photons.\n\nhttps://indico.particle.mephi.ru/even t/626/contributions/6285/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6285/ END:VEVENT BEGIN:VEVENT SUMMARY:The study of charged hadron distributions in relativistic heavy-io n collisions using holographic thermodynamics DTSTART;VALUE=DATE-TIME:20261028T071500Z DTEND;VALUE=DATE-TIME:20261028T073000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6287@cern.ch DESCRIPTION:Speakers: Anton Anufriev (Saint Petersburg State University)\n At the beginning of the 21st century\, a new phase of strongly interacting matter\, \nknown as the quark-gluon plasma (QGP)\, was established [1]. T o study QGP formation in\nheavy-ion collisions\, the solution of system of relativistic hydrodynamics equations with\na specific equation of state ( EoS) is typically employed. In light of difficulties for non-zero baryonic potentials within Lattice QCD\, various holographic models based on the A dS/CFT duality have been proposed to obtain the QGP EoS from the thermodyn amic properties of a corresponding black brane in AdS$_5$ [2].\n\nIn this work\, we discuss possible phenomenological approach for incorporating not only\nthe baryon chemical potential but also the quantum numbers of stran geness and charge into holographic thermodynamics. The method proposed emp loys a phenomenological hypothesis inspired by the thermodynamic dependenc ies of the hadron gas model. The Thermal FIST [3] package helps us to find the definition for the full chemical potential\, which behaves like a had ron gas in the characteristic temperature range. We apply machine learning methods to address regression and optimization problems during the calibr ation of the model's free parameters using LQCD results for quark masses t hat approximate the physical values [4]. For practical applications in hea vy-ion collision studies\, the holographic EoS with strangeness and charge is incorporated into the hydrodynamical packages MUSIC [5] and vHLLE [6]. \n\nTo obtain final hadronic spectra\, numerical simulations were conducte d using the iEBE-MUSIC and SMASH-vHLLE frameworks. The various hadronic re lations for charged pions\, kaons and protons are studied using approach d escribed.\n\nThe authors acknowledge Saint-Petersburg State University for a research project ID: 153212394\n\n\nReferences\n\n[1] J. Adams et al. ( STAR Collab.)\, Nucl. Phys. A 757 102 (2005)\n\n[2] I. Aref’eva\, K. Ran nu\, P. Slepov\, Holographic anisotropic model for light quarks with\nconf inement-deconfinement phase transition\, J. High Energ. Phys. 2021\, 90 (2 021).\n\n[3] V. Vovchenko\, H. Stoecker\, Thermal-FIST: A package for heav y-ion collisions and hadronic\nequation of state\, Comput. Phys. Commun. 2 44\, 295 (2019)\n\n[4] M. Cheng et al.\, QCD equation of state with almost physical quark masses\, Phys. Rev. D 77\,\n014511 (2008)\n\n[5] B. Schenk e\, S. Jeon\, C. Gale\, (3+1)D hydrodynamic simulation of relativistic hea vy-ion\ncollisions\, Phys. Rev. C 82\, 014903 (2010)\n\n[6] Iu. Karpenko\, P. Huovinen\, M. Bleicher\, A 3+1 dimensional viscous hydrodynamic code f or\nrelativistic heavy ion collisions\, Comput. Phys. Commun. 185 (2014)\, 3016\n\nhttps://indico.particle.mephi.ru/event/626/contributions/6287/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6287/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of spectator-driven effects on anisotropic flow form ation at the NICA energy range DTSTART;VALUE=DATE-TIME:20261028T070000Z DTEND;VALUE=DATE-TIME:20261028T071500Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6289@cern.ch DESCRIPTION:Speakers: Nikita Bikmetov (JINR)\nAnisotropic flow is a fundam ental observable in relativistic heavy-ion collisions that describes the a nisotropy in the azimuthal distribution of emitted particles. It develops mainly due to pressure gradients generated during the early stages of the collision\, which transform the spatial anisotropy of the initial overlap region into momentum anisotropy of the final-state particles. In the energ y range of NICA complex\, due to longer passge time\, spectators can stron gly influence the observed flow through interactions with emitted particle s.\nIn this work\, we study the influence of spectator matter on anisotrop ic flows in Ag+Ag\, Au+Au\, Xe+Xe\, and U+U collisions at (\\sqrt{s_{NN}}= 2.4)–4.5 GeV using a modern transport model. Calculations with and witho ut spectator propagation are compared for different particle species\, col lision energies\, and centralities to estimate the spectator contribution to the directed (v1)\, elliptic (v2)\, triangular (v3)\, and quadrangular (v4) flow coefficients.\n\nhttps://indico.particle.mephi.ru/event/626/cont ributions/6289/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6289/ END:VEVENT BEGIN:VEVENT SUMMARY:Higher-harmonic proton flow and differential $v_{1}$\, $v_{2}$ mea surements in the fixed-target mode of the MPD Experiment at NICA DTSTART;VALUE=DATE-TIME:20261028T074500Z DTEND;VALUE=DATE-TIME:20261028T080000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6290@cern.ch DESCRIPTION:Speakers: Peter Parfenov (JINR\, NRNU MEPhI)\nAnisotropic flow serves as a sensitive probe of the equation of state (EOS) and transport properties of the strongly interacting matter. It is an important observab le at intermediate beam energies\, which current theoretical models associ ate with the high baryon density region of the QCD phase diagram. Despite extensive study\, this region still requires additional experimental const raints. This work presents a feasibility study of differential anisotropic flow measurements for identified hadrons in the fixed-target mode of the MPD experiment at NICA\, which explores the properties of strongly interac ting matter at beam energies of 2.3–3.5 GeV. For the first time\, result s on the higher harmonic anisotropic flow of protons will be shown\, speci fically their transverse momentum ($p_{T}$) and rapidity ($y$) dependencie s. In addition\, the large statistics of the analysis enable double-differ ential $v_{1}$ and $v_{2}$ measurements as functions of $p_{T}$ and $y$\, which will also be presented.\n\nhttps://indico.particle.mephi.ru/event/62 6/contributions/6290/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6290/ END:VEVENT BEGIN:VEVENT SUMMARY:Directed and Elliptic flow measurements in the BM@N experiment wit h highly non-uniform azimuthal acceptance DTSTART;VALUE=DATE-TIME:20261028T064500Z DTEND;VALUE=DATE-TIME:20261028T070000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6291@cern.ch DESCRIPTION:Speakers: Mikhail Mamaev (NRNU MEPhI)\nHigh-baryonic-density s trongly interacting matter is created in collisions of heavy ions\, and it s properties can be probed through the azimuthal anisotropy of produced pa rticle momenta. This anisotropy is commonly quantified via the Fourier coe fficients of the particle azimuthal angle distribution. However\, the meas ured coefficients are susceptible to significant biases introduced by the detector setup. In my talk\, I address this challenge by reviewing existin g correction techniques and then proposing an upgraded approach based on P rincipal Component Analysis to account for non-uniformities in the detecto r azimuthal acceptance. The performance of this new correction is evaluate d using high-statistics Monte-Carlo simulations of the BM@N experimental s etup\, processed through a full chain of data-like reconstruction.\n\nhttp s://indico.particle.mephi.ru/event/626/contributions/6291/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6291/ END:VEVENT BEGIN:VEVENT SUMMARY:Centrality Selection Effect on directed flow of protons in Xe+Cs(I ) collisions at the beam energy of 3.8A GeV DTSTART;VALUE=DATE-TIME:20261028T061500Z DTEND;VALUE=DATE-TIME:20261028T063000Z DTSTAMP;VALUE=DATE-TIME:20261104T201202Z UID:indico-contribution-319-6293@cern.ch DESCRIPTION:Speakers: Alexander Demanov ()\nThe directed flow ($v_{1}$) of protons is one of the important observables sensitive to the Equation of State (EoS) of strongly interacting matter produced in relativistic heavy- ion collisions. Detailed differential measurements of protons have been ob tained from the analysis of the first physics data of the BM@N experiment for Xe+Cs(I) collisions at a beam energy of 3.8A GeV. Because directed flo w depends strongly on the collision geometry\, the underlying impact param eter is routinely deduced from experimental data via centrality determinat ion. In this work\, we investigate the influence of the centrality determi nation method on the measurements of the directed flow of protons in the B M@N experiment.\n\nhttps://indico.particle.mephi.ru/event/626/contribution s/6293/ LOCATION: Conference Hall 2 URL:https://indico.particle.mephi.ru/event/626/contributions/6293/ END:VEVENT END:VCALENDAR