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We investigate the thermodynamical properties of nuclear matter in heavy ion collisions, in particular with respect to questions of thermodynamical instability, phase transitions and fragmentation. For this we analyze results of…

Nuclear Theory · Physics 2007-05-23 T. Gaitanos , H. H. Wolter , C. Fuchs

One of the main goals of heavy-ion collision experiments is to study the structure of the QCD phase diagram. The QCD phase diagram is typically plotted as temperature ($T$) vs. baryon chemical potential ($\mu_{B}$). The statistical thermal…

Nuclear Experiment · Physics 2013-08-15 Lokesh Kumar

The hadron ratios measured in central Au-Au collisions are analysed by means of Hadron Resonance Gas (HRG) model over a wide range of nucleon-nucleon center-of-mass energies ranging from 7.7 to 200 GeV as offered by the STAR Beam Energy…

Nuclear Theory · Physics 2013-12-02 A. Tawfik , E. Abbas

Estimation of the freeze-out parameters as the function of rapidity in Pb+Pb collisions at $\sqrt{s_{NN}}=72$ GeV in the AFTER@LHC project is performed. The conventional hadron resonance gas model is used for the analysis of the events…

Nuclear Theory · Physics 2018-09-19 Viktor Begun , Daniel Kikoła , Volodymyr Vovchenko , Daniel Wielanek

We study light-hadron production in Au+Au collisions at $\sqrt{s_{NN}} = 7.7-39$ GeV using an extended Integrated HydroKinetic Model (iHKMe). Focusing on transverse momentum spectra, we investigate the sensitivity to key model parameters,…

Nuclear Theory · Physics 2026-03-09 Narendra Rathod , Yuri Sinyukov , Musfer Adzhymambetov , Hanna Zbroszczyk

Hadronic freezeout during the evolution of the medium created in heavy-ion collisions is an important phenomena. It is quite useful to find a universal freezeout condition for each and every nuclear collisions. In this article, we have…

High Energy Physics - Phenomenology · Physics 2018-03-28 O. S. K. Chaturvedi , P. K. Srivastava , Arpit Singh , B. K. Singh

It is shown that recent RHIC data on hadron spectra and elliptic flow can be excellently reproduced within a hydrodynamic description of the collision dynamics, and that this provides strong evidence for rapid thermalization while the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ulrich W. Heinz , Peter F. Kolb

Quantum Chromodynamics (QCD) predicts that at sufficiently high temperature ($T$) and/or baryon chemical potential ($\mu_B$), the state of matter is in the form of quarks and gluons, which are no longer confined within hadrons. This…

Nuclear Experiment · Physics 2023-07-28 Krishan Gopal

An expanding fireball model with two freeze-outs, which assumes that the chemical freeze-out occurs earlier at higher temperature and the thermal freeze-out occurs later at lower temperature, is developed and successfully applied to fit…

Nuclear Theory · Physics 2015-05-28 Suk Choi , Kang Seog Lee

Investigation of the final hadronic state properties of ultra-relativistics pp and Au+Au collisions supplies information on freeze-out conditions at RHIC and possible insights into early stages of these collisions. A variety of particle…

Nuclear Experiment · Physics 2009-11-10 Olga Barannikova

We provide a concise review on recent theory advancements towards full-fledged (3+1)D dynamical descriptions of relativistic nuclear collisions at finite baryon density. Heavy-ion collisions at different collision energies produce…

Nuclear Theory · Physics 2021-10-27 Shanjin Wu , Chun Shen , Huichao Song

We analyze the thermodynamical state of nuclear matter in transport descriptions of heavy ion reactions. We determine thermodynamical variables from an analysis of local momentum space distributions and compare to blast model parameters…

Nuclear Theory · Physics 2017-08-23 T. Gaitanos , H. H. Wolter , C. Fuchs

The rapidity distribution of thermal photons produced in Pb+Pb collisions at CERN-SPS energies is calculated within scaling and three-fluid hydrodynamics. It is shown that these scenarios lead to very different rapidity spectra. A…

High Energy Physics - Phenomenology · Physics 2015-06-25 A. Dumitru , U. Katscher , J. A. Maruhn , H. Stöcker , W. Greiner , D. H. Rischke

We attempt to describe the rapidity distribution of P, P-bar, K+ and K- for the most central Au+Au collisions at root(sNN) of 62.4 GeV,130 GeV and 200 GeV. The transverse momentum spectra of strange as well as non-strange hadrons e.g. P,…

High Energy Physics - Phenomenology · Physics 2014-12-09 Saeed Uddin , Riyaz Ahmed Bhat , Inam-ul Bashir

Using the UrQMD/coarse graining approach we explore the kinetic freeze-out stage in central Au + Au collisions at various energies. These studies allow us to obtain detailed information on the thermodynamic properties (e.g. temperature and…

High Energy Physics - Phenomenology · Physics 2020-01-29 Gabriele Inghirami , Paula Hillmann , Boris Tomášik , Marcus Bleicher

This work is an attempt to give a brief overview of the implementation of the statistical ther- modynamics to hadronic matter. The possibility to use the hydrodynamic approach for developing the physical model of the formation of exotic…

Nuclear Theory · Physics 2015-09-23 K. V. Cherevko , L. L. Jenkovszky , V. M. Sysoev , Feng-Shou Zhang

The pseudorapidity dependence of elliptic flow in Au+Au collisions at 130 $A$ GeV is studied within a full three-dimensional hydrodynamic model in the light-cone coordinate. First, we prepare two initial conditions in the hydrodynamic model…

Nuclear Theory · Physics 2009-11-07 Tetsufumi Hirano

A 1+1 dimensional hydrodynamical model in the light-cone coordinates is used to describe central heavy-ion collisions at ultrarelativistic bombarding energies. Deviations from Bjorken's scaling are taken into account by choosing finite-size…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. M. Satarov , I. N. Mishustin , A. V. Merdeev , H. Stoecker

Rapidity/seudorapidity densities for charged particles and their centrality, rapidity and energy dependence in Au+Au collisions at RHIC are studied in a quark combination model. Using a Gaussian-type rapidity distribution for constituent…

Nuclear Theory · Physics 2008-11-26 Feng-lan Shao , Tao Yao , Qu-bing Xie

A simple thermal model with single freeze-out and flow is used to analyze the ratios of hadron yields and the hadron transverse-mass spectra measured in 130 GeV Au+Au collisions at RHIC. An overall very good agreement between the model…

Nuclear Theory · Physics 2009-11-07 Wojciech Florkowski , Wojciech Broniowski