scholarly journals BM@N and MPD experiments at NICA

2018 ◽  
Vol 171 ◽  
pp. 12001 ◽  
Author(s):  
Vladimir Kekelidze ◽  
Vadim Kolesnikov ◽  
Alexander Sorin
Keyword(s):  
Heavy Ion ◽  
Collective Effects ◽  
Baryonic Matter ◽  
Heavy Ion Physics ◽  
Ion Collisions ◽  
Physics Program ◽  
Baryonic Density ◽  
Medium Modification ◽  
The Rich ◽  
Nica Collider

The project NICA (Nuclotron-based Ion Collider fAcility) aims to study hot and baryon rich QCD matter in heavy ion collisions in the energy range [see formula in PDF] = 4 − 11 GeV. The rich heavy-ion physics program will be performed at two experiments, BM@N (Baryonic Matter at Nuclotron) at beams extracted from the Nuclotron, and at MPD (Multi-Purpose Detector) at the NICA collider. This program covers a variety of phenomena in strongly interacting matter of the highest baryonic density, which includes study of collective effects, production of hyperon and hypernuclei, in-medium modification of meson properties, and event-by-event fluctuations.

scholarly journals YaJEM — A MONTE CARLO CODE FOR IN-MEDIUM SHOWER EVOLUTION

2011 ◽  
Vol 20 (07) ◽  
pp. 1594-1599 ◽  
Author(s):  
THORSTEN RENK
Keyword(s):  
Monte Carlo ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Monte Carlo Code ◽  
High Transverse Momentum ◽  
Final State ◽  
Heavy Ion Physics ◽  
Ion Collisions ◽  
Physics Program ◽  
Medium Modification

High transverse momentum (PT) QCD scattering processes are regarded as a valuable tool to study the medium produced in heavy-ion collisions, as due to uncertainty arguments their cross section should be calculable independent of medium properties whereas the medium then modifies only the final state partons emerging from a hard vertex. With the heavy-ion physics program at the CERN LHC imminent, the attention of high PT physics in heavy ion collisions is shifting from the observation of hard single hadrons to fully reconstructed jets. However, the presence of a background medium at low PT complicates jet-finding as compared to p - p collisions. Monte-Carlo (MC) codes designed to simulate the evolution of parton showers evolving into hadron jets are valuable tools to understand the complicated interplay between the medium modification of the jet and the bias introduced by a specific jet-finding scheme. However, such codes also use a set of approximations which needs to be tested against the better understood single high PT hadron observables. In this paper, I review the ideas underlying the MC code YaJEM (Yet another Jet Energy-loss Model) and present some of the results obtained with the code.

scholarly journals Astrophysics in the Laboratory—The CBM Experiment at FAIR

Particles ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 320-335
Author(s):  
Peter Senger
Keyword(s):  
Heavy Ion ◽  
High Energy ◽  
Baryonic Matter ◽  
Quantum Chromo Dynamics ◽  
Ion Collisions ◽  
Physics Program ◽  
Supernova Explosions ◽  
Under Construction ◽  
Density Equation ◽  
The Universe

The future “Facility for Antiproton and Ion Research” (FAIR) is an accelerator-based international center for fundamental and applied research, which presently is under construction in Darmstadt, Germany. An important part of the program is devoted to questions related to astrophysics, including the origin of elements in the universe and the properties of strongly interacting matter under extreme conditions, which are relevant for our understanding of the structure of neutron stars and the dynamics of supernova explosions and neutron star mergers. The Compressed Baryonic Matter (CBM) experiment at FAIR is designed to measure promising observables in high-energy heavy-ion collisions, which are expected to be sensitive to the high-density equation-of-state (EOS) of nuclear matter and to new phases of Quantum Chromo Dynamics (QCD) matter at high densities. The CBM physics program, the relevant observables and the experimental setup will be discussed.

scholarly journals Heavy-ion Physics (ATLAS)

2018 ◽  
Vol 182 ◽  
pp. 02101
Author(s):  
Mariusz Przybycien
Keyword(s):  
Hadron Collider ◽  
Charged Particles ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Heavy Ion Physics ◽  
Atlas Experiment ◽  
Ion Collisions ◽  
Physics Program ◽  
Electromagnetic Processes ◽  
Peripheral Collisions

The ATLAS experiment at the Large Hadron Collider has undertaken a broad physics program to probe and characterize the hot nuclear matter created in relativistic heavy-ion collisions. This talk presents recent results on production of electroweak bosons and quarkonium, charged particles and jets, bulk particle collectivity and electromagnetic processes in ultra-peripheral collisions, from Pb+Pb and p+Pb systems.

scholarly journals Techniques for Reconstruction of Strange Objects at MPD

Particles ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 178-185
Author(s):  
Alexander Zinchenko
Keyword(s):  
Monte Carlo ◽  
Heavy Ion Collisions ◽  
Feasibility Studies ◽  
Heavy Ion ◽  
Strangeness Production ◽  
Ion Collisions ◽  
Physics Program ◽  
Nica Collider

Study of the strangeness production in heavy-ion collisions is one of the most important parts of the physics program of the MPD experiment at the NICA collider. Therefore, the problem of a reliable and efficient reconstruction of strange objects should be addressed with a high priority during the preparation to the experiment. The paper describes the approach to this task which was developed and implemented as a part of the MPD software. Some results of its application during the detector Monte Carlo feasibility studies are presented.

scholarly journals Simultaneous muon and reference hadron measurements in the compressed baryonic matter experiment at FAIR

2020 ◽  
Vol 29 (02) ◽  
pp. 2030003
Author(s):  
Anna Senger
Keyword(s):  
Heavy Ion ◽  
Baryonic Matter ◽  
Qcd Phase Diagram ◽  
Compressed Baryonic Matter ◽  
Ion Collisions ◽  
Gold Collisions ◽  
Simulated Performance ◽  
Rich Detector ◽  
The Rich ◽  
Material Budget

The mission of the Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt is to explore the QCD phase diagram at high net baryon densities likely to exist in the core of neutron stars. The CBM detector system is designed to perform multi-differential measurements of hadrons and leptons in central gold-gold collisions at beam energies between 2 and 11 A GeV with unprecedented precision and statistics. In order to reduce the systematic errors of the lepton measurements, which generally suffer from a large combinatorial background, both electrons and muons will be measured with the same acceptance. Up to now, no di-muon measurements have been performed in heavy-ion collisions at beam energies below 158 A GeV. The main device for electron identification, a Ring Imaging Cherenkov (RICH) detector, can be replaced by a setup comprising hadron absorbers and tracking detectors for muon measurements. In order to obtain a complete picture of the reaction, it is important to measure simultaneously leptons and hadrons. This requirement is fulfilled for the RICH, which has a low material budget, and only little affects the trajectories of hadrons on their way to the Time-of-Flight (TOF) detector. In contrast, the simultaneous measurement of muons and hadrons within the same experimental acceptance poses a substantial challenge. This article reviews the simulated performance of the CBM experiment for muon identification, together with the possibility of simultaneous hadron measurements.

THE ALICE EXPERIMENT AT CERN LHC: STATUS AND FIRST RESULTS

2011 ◽  
Vol 26 (03n04) ◽  
pp. 517-522
Author(s):  
◽  
ERMANNO VERCELLIN
Keyword(s):  
Data Analysis ◽  
Cosmic Rays ◽  
Dense Matter ◽  
Heavy Ion ◽  
Short Description ◽  
Alice Experiment ◽  
Ion Collisions ◽  
Physics Program ◽  
Accelerate Proton ◽  
First Results

The ALICE experiment is aimed at studying the properties of the hot and dense matter produced in heavy-ion collisions at LHC energies. In the first years of LHC operation the ALICE physics program will be focused on Pb - Pb and p - p collisions. The latter, on top of their intrinsic interest, will provide the necessary baseline for heavy-ion data. After its installation and a long commissioning with cosmic rays, in late fall 2009 ALICE participated (very successfully) in the first LHC run, by collecting data in p - p collisions at c.m. energy 900 GeV. After a short stop during winter, LHC operations have been resumed; the machine is now able to accelerate proton beams up to 3.5 TeV and ALICE has undertaken the data taking campaign at 7 TeV c.m. energy. After an overview of the ALICE physics goals and a short description of the detector layout, the ALICE performance in p - p collisions will be presented. The main physics results achieved so far will be highlighted as well as the main aspects of the ongoing data analysis.

scholarly journals In-medium modification of π-mesons produced in heavy ion collisions

1998 ◽  
Vol 642 (1-2) ◽  
pp. c155-c164 ◽  
Author(s):  
V.L. Eletsky ◽  
B.L. Ioffe ◽  
J.I. Kapusta
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Ion Collisions ◽  
Medium Modification

Energy density in small systems equal to the one in heavy-ion collisions

2016 ◽  
Vol 25 (07) ◽  
pp. 1642009 ◽  
Author(s):  
G. Paić ◽  
E. Cuautle
Keyword(s):  
Experimental Data ◽  
Energy Density ◽  
Quark Gluon Plasma ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Collective Effects ◽  
Small Systems ◽  
Ion Collisions ◽  
Recent Developments ◽  
The One

The recent developments in the study of quark–gluon matter at high densities have shown that there are many similarities between the behavior of the observables in light and heavy systems, especially when the light systems are observed at high multiplicities. Contrary to what was previously thought, the small systems do exhibit collective effects that could indicate that small droplets of strongly interacting quark–gluon plasma are possible. The results infer that the energy densities can be computed in light systems in the same way as in heavy systems and hence, the energy density should be considered when comparing systems with different sizes. We review some of the aspects as well as the existing main models and the way to disentangle them using experimental data.

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