Conveners
Intermediate and high energies, heavy ion collisions
- Igor Pshenichnov (INR, Moscow and MIPT)
Intermediate and high energies, heavy ion collisions
- Igor Pshenichnov (INR, Moscow and MIPT)
Intermediate and high energies, heavy ion collisions
- Yuri Kharlov (Institute for High Energy Physics of NRC Kurchatov Institute (RU))
Intermediate and high energies, heavy ion collisions
- Yuri Kharlov (Institute for High Energy Physics of NRC Kurchatov Institute (RU))
Intermediate and high energies, heavy ion collisions
- Igor Lokhtin ()
Intermediate and high energies, heavy ion collisions
- Igor Lokhtin ()
Intermediate and high energies, heavy ion collisions: 2
- Grigory Nigmatkulov ()
Intermediate and high energies, heavy ion collisions: 1
- Igor Pshenichnov (INR, Moscow and MIPT)
Intermediate and high energies, heavy ion collisions: 1
- Igor Pshenichnov (INR, Moscow and MIPT)
Intermediate and high energies, heavy ion collisions: 2
- Grigory Nigmatkulov ()
Intermediate and high energies, heavy ion collisions
- Sergey Petrushanko (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University)
Intermediate and high energies, heavy ion collisions
- Sergey Petrushanko (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University)
Intermediate and high energies, heavy ion collisions
- Vladimir Zherebchevsky (Saint-Petersburg State University)
Intermediate and high energies, heavy ion collisions
- Vladimir Zherebchevsky (Saint-Petersburg State University)
Presentation Materials
Author: Alexey Povarov (for the STAR Collaboration)
National Research Nuclear University MEPhI, Moscow, Russia
E-mail: povarovas@gmail.com
Heavy-ion collisions create matter which is characterized by high temperature and energy density, called Quark-Gluon Plasma (QGP). One of the methods for studying the transport properties and equation of state of the created matter is the measurement...
Pion femtoscopy in Au+Au collisions at $\sqrt{s_{NN}} = 3$ GeV in the STAR experiment
A. Kraeva (for the STAR Collaboration)
E-mail: annakraeva555@gmail.com
National Research Nuclear University MEPhI, Kashirskoe highway 31, Moscow, 115409, Russia
There is a method that allows directly measuring the spatio-temporal extent of the region where hadrons are emitted and the parameters of...
One of the goals of ion-ion collision studies is to understand mechanism of particle production and reveal the properties of particle-emitting source. A quark-gluon matter, produced in collisions of relativistic heavy ions at high energies ($\sqrt{s_{NN}}\ge$62.4 GeV), undergoes a rapid transition to the hadronic matter known as crossover [1]. At lower collision energies it is expected that...
A main purpose of Beam Energy Scan experiments is to study the properties of the Quark-Gluon-Matter (QGM) forming in the collisions of two nuclei. Anisotropic flow of produced particles is one of the important observables sensitive to the transport properties of the QGM created in relativistic heavy-ion collisions. Anisotropic flow of identified particles measured in Au + Au collisions at...
The ALICE experiment at the LHC is dedicated to the study of the hot and dense medium produced in heavy-ion collisions, the so-called quark-gluon plasma (QGP). Neutral meson spectra and direct photon spectra at high $p_{\rm T}$ impose constraints on parton distribution functions in protons and nuclei, and provide information about the transport properties of the QGP. The temperature of the hot...
The first measurements of the transverse momentum (pT) spectra, integrated yields and mean pT of Σ0 and anti-Σ0 hyperons in pp collisions at s√=7 TeV at the LHC are presented. The Σ0(anti-Σ0) signal is reconstructed via its electromagnetic decay channel Λ (anti-Λ)γ. The Λ (anti-Λ) baryon is reconstructed via its decay into p + π− (anti-p+π+), while the photon is detected by exploiting the...
Ultra-peripheral collisions of heavy ions (UPCs) give a unique opportunity for studies of two-photon interactions in an environment with suppressed hadronic processes and enhanced electromagnetic interactions. Specifically, studies of light-by-light scattering process (LbyL) can provide a new insight on axion-like particles (ALPs) production, which emerge in a number of Standard Model...
Quarkonia represent one of the most valuable probes of the deconfined quark-gluon hot medium since the very first experimental studies with ultrarelativistic heavy-ion collisions. A significant step forward in characterizing the QCD matter via systematic studies of quarkonia production will be performed by the next-generation heavy-ion experiment ALICE 3 [1], a successor of the ongoing ALICE...
The photon spectrometer (PHOS) of the ALICE experiment is a high-granularity PbWO4 crystal calorimeter with avalanche photodiode (APD) readout. Its primary physics goal is the measurement of direct photon and neutral meson spectra and correlations in pp, p-A and A-A collisions. PHOS participated in LHC Run 1 (2009-2013) and Run 2 (2015-2018), during which a large amount of physical data were...
For the first time at LHC energies, we present the forward rapidity gap spectra from proton-lead (pPb) collisions for both pomeron-lead and pomeron-proton topologies. The analysis is performed over 10.4 units of pseudorapidity. The center-of-mass energy is 8.16 TeV per nucleon-nucleon pair, i.e., almost 300 times higher than previous measurements of diffractive production in proton-nucleus...
Search for physics beyond the standard model using resonant and nonresonant models in dilepton channel has been performed using Run 2 data with integrated luminosity 140 fb-1 in proton-proton collisions at √s=13 TeV with the CMS experiment at the LHC.
A good agreement with the predictions of the standard model is found, no significant deviations are observed.
Limits on the parameters of the...
Many models beyond the standard model predict new particles with long lifetimes, such that the position of their decay is measurably displaced from their production vertex. We present recent results of searches for long-lived particles obtained using data recorded by the CMS experiment at the LHC
One of the key goals of the heavy-ion programs is to study the transport properties of the quark-gluon plasma (QGP) forming in the collisions of two nuclei, such as the specific shear viscosity η/s as a function of temperature T and baryon chemical potential μB. The precise extraction of such parameters may present a certain difficulties. To strengthen the constraints for η/s(T,...
Geant4 FTF Model Description of the NA61/SHINE Collaboration Data on Strange Particle Production in pp-interactions
A. Galoyan and V. Uzhinsky
Joint Institute for Nuclear Research, Dubna, Russia
E-mail: uzhinsky@jinr.ru
Geant4 is the well-known package for simulation of particle penetration in matter which is used in many high energy experiments. There is FTF...
The High Acceptance DiElectron Spectrometer (HADES) is a fixed target experiment which explores the properties of hadronic matter in collisions of pions, protons and ions with various nuclei at beam energies 1-2 A GeV. It operates at the SIS18 accelerator in GSI, Darmstadt. Due to the newly built electromagnetic calorimeter ECal the HADES has a possibility to measure yield of the neutral pions...
Multiplicity distributions of charged spectators with Z=1, 2, 3 measured
at the HADES experiments in reactions Ag+Ag at 1.58 AGeV and Au+Au at
1.23 AGeV will be presented. The experimental data have been obtained by
Forward multichannel scintillation detector, Forward Wall (FWall). The
multiplicity distributions of charged fragments for different centrality
classes have been compared with...
The forward hadron calorimeter (PSD – Projectile Spectator Detector will be used at the Compressed Baryonic Matter (CBM) experiment at FAIR to measure the nucleus-nucleus collision centrality and orientation of the reaction plane. The PSD is a sampling lead/scintillator with modular transverse structure and longitudinal segmentation. The PSD has 46 modules with 10 longitudinal sections in each...
Projectile Spectator Detector (PSD) is a sampling hadron calorimeter used in the NA61/SHINE experiment to provide measurement of collision centrality and event plane reconstruction independently from tracking detectors. The PSD consists of modules with longitudinal segmentation based on lead/scintillator layers with the sampling ratio 4:1. Light from scintillator plates is collected with WLS...
Each Monte Carlo generator used for heavy-ion collision simulations has a specific output form of simulated events. This fact complicates data storage and prevent standardization of processing data generated considering different models.
The McDst format is implemented to work around this. The format allows to store and smoothly read simulated data, that obtained from different generators,...
Quark-gluon plasma (QGP) is a state of nuclear matter, where quarks and gluons are deconfined [1]. It can be formed in laboratory conditions in collisions of heavy ions at high energies [2]. Elliptic flow (v2), which reflects azimuthal anisotropy of hadron production in heavy ion collisions, is one of the main observables characterizing properties of QGP [3]. The study of the...
Femtoscopy is an important tool for studying space–time properties of the emission sources created in heavy-ion collisions such as spatial sizes, evolution duration, collective flow effects, etc. The importance of kaon femtoscopy is to check different model scenarios that work equally well for pions. In this contribution, we present the results of femtoscopic analysis of identical charged-kaon...
The study of resonance production is important in proton-proton, proton-nucleus, and heavy-ion collisions.
In heavy-ion collisions, since the lifetimes of short-lived resonances are comparable with the lifetime
of the late hadronic phase, regeneration and rescattering effects become important and resonance yield ratios
to those of longer lived particles can be used to estimate the time...
The data [1] on spectra of $K_S^0$ mesons measured by the STAR Collaboration in Au+Au collisions at various centralities characterized by different multiplicity densities of negative particles were analyzed in the $z$-scaling approach [2,3]. The transverse momentum distributions obtained in the BES-I program at RHIC were accumulated in seven centrality classes from the most central 0-5% to...
Results of fractal analysis of Au+Au events at the energy of $\sqrt{s_{NN}} = 200$ GeV/c by the method of the equation systems of power coverings (SePaC) [1] are presented. A Multi-Phase Transport (AMPT) model [2,3] to generate events in relativistic heavy ion collisions was used. In Event-by-Event analysis a distribution on the transverse momentum $p_Т$ of negatively charged particles...
The experimentally observed significant polarization of $\Lambda$ and anti-$\Lambda$ particle in heavy-in collisions [1] lead to speculations that rapidly rotating swirls are of nuclear matter are created [2]. We use the transport model PHSD to simulate the Au+Au and Pb+Pb collisions at NICA energies and perform the fluidization procedure determining density, temperature, and velocity fields...
The new search for Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution effects is performed at the Large Hadron Collider by the Compact Muon Solenoid experiment. The cross sections for inclusive and Mueller-Navelet dijet production are measured as a function of the rapidity separation between the jets in proton-proton collisions at √s = 2.76 TeV for jets with transverse momentum pT > 35 GeV and...
Lattice gauge QCD calculations predict phase transition from hadronic matter to deconfined state of quarks and gluons - quark-gluon plasma (QGP) - at a high temperature and energy density [1]. Minimal conditions of the QCD phase transition and QGP matter formation are studied in relativistic small-system collisions [2]. One of the ways to investigate QGP properties in experiment is to measure...
In the framework of the multi-pomeron exchange model (MPEM) with string fusion [1,2] we study the multiplicity distributions of charged particles and their combinants in pp collisions at LHC energies and compare the results with the data obtained by ALICE [3] and CMS [4] collaborations at CERN. We use the standard distribution in number of cut pomerons in pp collisions [5]. In this model, each...
Abstract
The BM@N and MPD experiments at NICA facility (Dubna, Russia) will use the forward hadron calorimeters (FHCal) for centrality and reaction plane determination in the heavy ion collisions. Also the BM@N setup features Scintillation Wall and the Beam Hodoscope detectors for charged fragments measurements. The NA61/SHINE experiment at CERN is using two projectile spectator detectors...
Experiments with the CLAS detector at Jefferson Lab provided the dominant part of available in the world information on exclusive meson electroproduction in the resonance excitation region. Analyses of these results allow us to obtain electrocoupling of most excited states of the nucleon in mass range up to 1.75 GeV and at photon virtuality Q2 from photon point and up to 5 GeV2 [1]. It made...
Studies of single pion electroproduction off protons is the major source of information on the spectrum and structure of nucleon resonances (N) located in the mass range of W<2.0 GeV which decay preferentially to the Nπ final states [1]. Experimental data from CLAS on the exclusive pπ0, nπ+ electroproduction channels already provided unique information on N electroexcitation amplitudes at...
Studying the equation of state of strongly interacting matter is one of the main goals of the Multi Purpose Detector (MPD) experiment at the future NICA facility. Among the important observables in this study is final state momentum anisotropy relative to collision symmetry plane described with anisotropic transverse flow coefficients. This work addresses the systematics of participant and...
Studies of the excited nucleon state spectrum and structure offer unique insight into the dynamics of strong interaction in the regime of large QCD running coupling, i.e. the regime of strong QCD. The experimental program at Hall B in Jefferson Laboratory with the CLAS detector using electron and photon beams has provided the first and only available in the world results on electroexcitation...
A.T. D’yachenko$^{1,2}$, I. A. Mitropolsky$^{2}$
$^{1}$Emperor Alexander I Petersburg State Transport University, St. Petersburg, Russia;
$^{2}$B.P. Konstantinov Petersburg Nuclear Physics, Institute, National Research Center “Kurchatov Institute”, Gatchina, Russia
E-mail: dyachenko_a@mail.ru
In the present work, the hydrodynamic approach is used and the distribution function of...
Exсlusive 𝑁𝜋 and 𝜋$^+$𝜋$^−$𝑝 electroproduction channels currently represent the major source of information on nucleon resonance ($N^*$) electroexcitation amplitudes. Experiments with CLAS detector on exploration of 𝜋$^+$𝜋$^−$𝑝 electroproduction at Jefferson lab with decisive contribution from Moscow State University group provided information on electroexcitation amplitudes of most excited...
The method and computational tool will be presented for the evaluation of $Κ\Lambda$ and $Κ\Sigma^0$ electroproduction cross sections from the experimental results on exclusive structure functions $\frac{d\sigma_T}{d\Omega}$, $\frac{d\sigma_L}{d\Omega}$, $\frac{d\sigma_{LT}}{d\Omega}$, and $\frac{d\sigma_{TT}}{d\Omega}$ available from the measurements with the CLAS detector [2,3] with...
In proton-proton collision at high energies are produced two type photons: prompt and thermal. Prompt photons are produced at Compton scattering of quark-gluon and at annihilation of quak-antquark processes [1]. Thermal photons are produced in the processes with participation π mesons [2].
We constructed Feynman diagrams of the thermal photons production in following processes: 1., 2. , 3....
The measurements of exclusive $\pi^+n$ and $\pi^op$ electroproduction with the CLAS detector in Hall B at Jlab provided the dominant part of the world data on observables of these channels [1,2] stored in the CLAS Physics Data Base [3]. The data on exclusive Nπ and $\pi^+\pi^-p$ electroproduction are the major source of the information on nucleon resonance (N*) electroexcitation amplitudes....
The BM@N (Baryonic Matter at Nuclotron) is a fixed target experiment at the NICA-Nuclotron (JINR, Dubna, Russia) accelerator complex designed to study the properties of the dense nuclear matter produced in the nucleus-nucleus collisions. Several forward detectors have been developed and constructed at the INR RAS. These detectors are the Forward Hadron Calorimeter (FHCal), the Scintillation...
One way of evaluating the degree of equilibration in reaction, as well as determine the average source velocity, is through invariant cross section analysis as a function of longitudinal and transverse velocity.
In the present work the source characteristics of multifragmentation are investigated for the p + Au collisions at 2.1 GeV. Beam of 2.1 GeV protons were obtained from the Dubna...
Centrality is an important concept in the study of strongly interacting matter created in a heavy-ion collision whose evolution depends on its initial geometry. In the case of Baryonic Matter at Nuclotron (BM@N), which is a fixed-target experiment, collision can be characterized by the measured multiplicity or energy of produced particles at midrapidity or spectator fragments in the forward...
The results on the the vector Ay and tensor Ayy and Axx analyzing powers in deuteron-proton elastic scattering at large scattering angles are presented.
These data were obtained at internal target at JINR Nuclotron
in the energy range 400-1800 MeV using polarized deuteron beam
from new polarized ion source.
New data on the deuteron analyzing powers in the wide energy range ...
Extensive experience has been accumulated in deuteron and proton beam polarization measurements as well as in the the simulation of the pp-, pd- and dp-elastic scattering up to 1 GeV/nucleon for polarimeter upgrade at the Nuclotron Internal Target Station. Further development of the pp-, pd- and dd- colliding beams polarimetry at NICA is discussed. The first results of the simulation of...
In the BM@N (Baryon Matter at Nuclotron) experiment at NICA accelerator complex in Joint institute for Nuclear Research (Dubna, Russia) study of collisions of isospin symmetric nuclei with fixed targets is performed [1]. Efficient software environment plays key role in the BM@N experimental program. The BmnRoot software package is used for both simulation and event reconstruction of simulated...
The self-similarity approach is applied to study the hadron production in mid-rapidity region in $pp$ and $AA$ collisions. Our calculations describe satisfactorily the experimental data on the inclusive pT spectra of pions and kaons produced in $pp$ and central $BeBe$ collisions and their ratios as a function of initial energy $\sqrt{s}$. We collect also data on ratios of baryon to anti-baryon...
BM@N (Baryonic Matter at Nuclotron) [1] is the first stage experiment which is carried out at the NICA (Nuclotron-based Ion Collider fAсility) accelerator complex [2] located at Joint Institute for Nuclear Research in Dubna. The main purpose of the experiment is to study dense baryonic matter as a product of heavy ion collisions.
This work concentrates on the features of simulation for...
STUDY OF CUMULATIVE PROCESSES IN CORRELATION WITH STRANGENESS AND CHARM PRODUCTION IN HADRONIC COLLISIONS AT SPS AND NICA ENERGIES.
S.V. Yurchenko, A.A. Marova, G.A. Feofilov
Saint Petersburg State University, Saint Petersburg, Russia;
E-mail: st098136@student.spbu.ru
New mechanism [1,2] of strangeness and charm production was proposed in high energy hadronic collisions in association...
Charmed Particle Production in Geant4
A. Galoyan^1, V. Grichine^2, V. Uzhinsky^1
1 Joint Institute for Nuclear Research, Dubna, Russia;
2 P. N. Lebedev Physical Institute of RAS, Moscow, Russia
E-mail: galoyan@lxmx00.jinr.ru
Charmed particles production was observed and measured in fixed target experiments performed in CERN, Fermilab and DESY with hadron beams at...
In this work, we exploit the cumulant ratios: $v_2\{4\}/v_2\{2\}$ and $v_2\{6\}/v_2\{4\}$ to study the magnitude and skewness of elliptic flow fluctuations in Au+Au collisions at NICA energies in the framework of several state-of-the-art models of relativistic heavy-ion collisions. The agreement of $v_2\{4\}/v_2\{2\}$ ratio for different models with different initial conditions supports the...
MPD prospects for the study of hadron and (hyper)nuclei production at NICA energies
A. A. Mudrokh for the MPD Collaboration
1 Joint Institute for Nuclear Research, Dubna, Russia
E-mail: mudrokh@jinr.ru
The MultiPurpose Detector (MPD) [1] is constructed to study strongly interacting matter at the NICA accelerator complex [2]. In this report, we present the main NICA physics goals and...
B. O. Lavrov1,2, A. B. Kurepin1
1Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia;
2National Research Nuclear University, MEPhI, Moscow, Russia.
E-mail: lavrov.bogdan@list.ru
A proposal for an experiment to measure the cross section of pion, kaon, proton and antiproton production in a...
We calculate the total and partial shear viscosity of hadrons
produced in central gold-gold collisions at intermediate energies. For
calculations of the collisions the transport model UrQMD is employed.
The shear viscosity is obtained within the framework of Green-Kubo
formalism. The hadron resonance gas (HRG) model is used to determine
temperature and chemical potentials of baryon charge...
Centrality is an important concept in the study of strongly interacting matter created in a heavy-ion collision whose evolution depends on its initial geometry. Experimentally collisions can be characterized by the measured multiplicities or energy of produced particles or spectator fragments. Relation between collision geometry and experimentally measured multiplicities is commonly evaluated...
The Baryonic Matter at Nuclotron experiment (BM@N) aims to study the area of QCD phase diagram at high net baryon densities and moderate temperatures with collisions of heavy ions at $\sqrt{s_{NN}}$ = 2.3–3.5 GeV. Anisotropic transverse flow is one of the most important observable phenomena in a study of the properties of matter created in such collisions. Flow measurements require the...
Centrality determination in heavy ion collisions is an important task, because it allows us to compare the results from different experiments and models. To determine centrality, different methods are used. In this paper, a method based on inverse Bayes' theorem is considered. A new description of the fluctuations of charged particle multiplicity and their transverse energy is also proposed...
We investigate the production of diphotons from the hot and dense matter of quark-gluon plasma. The emission of diphotons is one of the most important electromagnetic signatures from quark-gluon plasma, experiments on which are still in progress at Large Hadron Collider (LHC) and Relativistic Heavy-Ion Collider (RHIC). For the same purpose, we employ a quasi-particle model containing quarks...
A new compact time-of-flight neutron detector is planned to be developed and produced. This detector will identify and measure the energies of neutrons produced in nucleus-nucleus collisions at energies up to 4 AGeV in the BM@N experiment at the Nuclotron (JINR, Dubna). The detector will be used to measure neutron yields and azimuthal neutron flows, which should be sensitive to the equation of...
The NA61/SHINE experiment at the CERN SPS has recently extended its program for the energy scan with Pb ions. In the past, the NA49 experiment, which preceded NA61/SHINE, also recorded data for Pb-Pb collisions at different energies. Together, the two experiments cover a wide range of beam energies provided by the CERN SPS in the range 13 – 150A GeV/c. Analysis of the new NA61/SHINE data and...
The PSD forward hadron calorimeter will be used to determine the collision geometry at the CBM experiment, which is under construction at FAIR. To test the CBM subsystems, the mCBM experiment was started at the SIS18 beamline of GSI as a part of the FAIR Phase-0 program. One of the PSD modules (mPSD) equipped with the free-streaming readout electronics has been installed and tested at the mCBM...
BM@N experiment at NICA in Dubna is currently being upgraded for the study of dense nuclear matter in heavy-ion collisions. One of the major upgrades is a new hybrid tracking system consisting of the large-area Silicon Tracking System (STS) and seven GEM planes [1]. STS is based on the modules with double-sided microstrip silicon sensors of CBM-type. The data driven acquisition system of STS...
The BM@N (Baryonic Matter at Nuclotron) experiment is the fixed target experiment and the first stage of the NICA (Nuclotron-based Ion Collider fAсility) accelerator complex located in the Joint Institute for Nuclear Research in Dubna. The experimental facility is designed to explore properties of dense strongly interacting matter in heavy ion collisions.
The data decoding and event...
It is known that the global conservation of spatial parity is a well-established symmetry of strong interactions. So far, no pieces of evidence have been found for P- and CP-symmetry breaking in strong interactions.
However, QCD does not forbid local breaking of parity symmetry due to large topological fluctuations at high temperature with dynamical generation of configurations of nontrivial...
Interactions of C nuclei with various targets were studied in BM@N experiment at NICA [1]. Studies of O–O collisions are foreseen in future experiments after the LHC upgrade [2] as a part of a program to scan the size of colliding systems. As follows from calculations [3,4], the admixture of the alpha-clustered states in C and O leads to a triangular modulation of elliptic flow from the...
In the search for the critical point of strongly interacting matter, one of the key tools is to look at event-by-event fluctuations of different event observables expecting their non-monotonic behavior. It is crucial for the experiments to eliminate a possible influence of so-called trivial volume fluctuations on the physics observables of interest. This may be done e.g. by the accurate...
A.T. D’yachenko$^{1,2}$, I. A. Mitropolsky$^{2}$
$^{1}$ Emperor Alexander I Petersburg State Transport University, St. Petersburg, Russia;
$^{2}$ B.P. Konstantinov Petersburg Nuclear Physics, Institute, National Research Center “Kurchatov Institute”, Gatchina, Russia
E-mail: dyachenko_a@mail.ru
Developing the hydrodynamic approach in describing collisions of heavy ions of...
Hadron models based on effective Hamiltonians of quantum field theory on the light front are considered. The states of mesons and nucleons are modeled as quark-antiquark and 3-quark bound states, respectively. These models can be used for comparison with experimental data for electro-magnetic form factors of mesons and nucleons.
The BM@N (Baryonic Matter at the Nuclotron) is the first experiment on the NICA accelerator complex under construction at JINR (Dubna, Russia).
The main purpose of the experiment is to study the interaction of relativistic heavy ions with fixed targets.
Technical runs of the experiment took place in 2017-2018.
The first physical run on the Xe beam and CsI target is...
Global polarization of $\Lambda$ hyperons appearing in non-central heavy-ion collisions was measured by the STAR experiment at RHIC for Au+Au collisions with $\sqrt{s_{NN}}$ = 3-200 GeV and at the LHC for Pb+Pb collisions with $\sqrt{s_{NN}}$ = 2.76 and 5.02 TeV. Global polarization reflects the vortical structure of quark-gluon matter at its initial evolution stage.
Global polarization of...
Multi-Purpose Detector (MPD) detector that is currently under construction at the NICA facility nowadays. It has been proposed to design and build an additional detector that will compliment the current MPD set and increase its measurement capabilities. The main goal is to provide in-formation from cosmic muons that pass the MPD detector in both in-beam and off-beam exper-iments. Hence, the...
The forward hadron calorimeters (FHCal) in the ongoing MPD/NICA (JINR, Dubna, Russia) [1] experiment will be used to measure the centrality, orientation of the event plane, and to study the properties of spectators. The possibility of studying spectators in heavy-ions collisions with FHCal is provided by the fine segmentation of the calorimeter, which consists of 44 lead/scintillator modules....
The prototype of a scintillation detector with various types of front-end electronics (FEE) have been developed. These types are with silicon photomultipliers (SiPM) readout. The paper presents the results of studies of a prototype scintillation detector, discusses the estimation of the time resolution. The presented prototype will allow obtaining and evaluating polarization observables...
