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We interpret hadronic particle abundances produced in S--Au/W/Pb 200 A GeV reactions in terms of the final state hadronic phase space model and determine by a data fit of the chemical hadron freeze-out parameters. Allowing for the flavor…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jean Letessier , Johann Rafelski

The transverse momentum (mass) spectra of the multi-strange and non-multi-strange (i.e. other identified) particles in central gold-gold (Au-Au), lead-lead (Pb-Pb), argon-muriate (Ar-KCl) and nickel-nickel (Ni-Ni) collisions over a wide…

High Energy Physics - Phenomenology · Physics 2020-07-27 Muhammad Waqas , Fu-Hu Liu , Rui-Qin Wang , Irfan Siddique

In this study, the chemical freeze-out of hadrons, including light-and strange-flavor particles and light nuclei, produced in Au+Au collisions at the Relativistic Heavy Ion Collider (RHIC), was investigated. Using the thermal-FIST…

Nuclear Theory · Physics 2025-02-27 Ning Yu , Zuman Zhang , Hongge Xu , Minxuan Song

We study charge fluctuations within the statistical hadronization model. Considering both the particle yield ratios and the charge fluctuations we show that it is possible to differentiate between chemical equilibrium and non-equilibrium…

Nuclear Theory · Physics 2009-11-11 Giorgio Torrieri , Sangyong Jeon , Johann Rafelski

Transverse momentum spectra of identified pions, Kaons , protons and Lambdas produced at mid-rapidity (0 < ycm < 0.5) in p-Pb collisions at root(sNN) = 5.02 TeV is studied for different collision centralities by using a Unified Statistical…

Nuclear Theory · Physics 2024-05-07 Inam-ul Bashir , Hamid Nanda , Saeed Uddin

A zone of reactions is determined and then exploited as a tool in studying the space-time structure of an interacting system formed in a collision of relativistic nuclei. The time dependence of the reaction rates integrated over spatial…

Nuclear Theory · Physics 2015-07-28 Dmitry Anchishkin , Anton Muskeyev , Stanislav Yezhov

We summarize our current understanding of the connection between the QCD phase line and the chemical freeze-out curve as deduced from thermal analyses of yields of particles produced in central collisions between relativistic nuclei.

Nuclear Theory · Physics 2011-01-18 Peter Braun-Munzinger , Johanna Stachel

Recent data on hadron multiplicities in central Pb+Pb collisions at 158A GeV/c at mid-rapidity are analyzed within the concept of chemical freeze-out. A non-uniformity of the baryon chemical potential along the beam axis is taken into…

Nuclear Theory · Physics 2010-04-05 S. V. Akkelin , P. Braun-Munzinger , Yu. M. Sinyukov

We have attempted to describe the rapidity and transverse momentum spectra, simultaneously, of the hadrons produced in the Ultra-relativistic Nuclear Collisions. This we have tried to achieve in a single statistical thermal freeze-out model…

High Energy Physics - Phenomenology · Physics 2015-05-20 Saeed Uddin , Jan Shabir Ahmad , Waseem Bashir , Riyaz Ahmad Bhat

The recently developed hadron resonance gas model with multicomponent hard-core repulsion is used to address and resolve the long standing problem to describe the light nuclear cluster multiplicities including the hyper-triton measured by…

High Energy Physics - Phenomenology · Physics 2021-03-17 O. V. Vitiuk , K. A. Bugaev , E. S. Zherebtsova , D. B. Blaschke , L. V. Bravina , E. E. Zabrodin , G. M. Zinovjev

The measured particle ratios in central heavy-ion collisions at RHIC-BNL are investigated within a chemical and thermal equilibrium chiral SU(3) \sigma-\omega approach. The commonly adopted noninteracting gas calculations yield temperatures…

Nuclear Theory · Physics 2009-11-07 D. Zschiesche , S. Schramm , J. Schaffner-Bielich , H. Stoecker , W. Greiner

A statistical (thermal) model is applied to the description of hadron yields measured at central nucleus-nucleus collisions at the top RHIC energy $\sqrt{s_{NN}} = 200$ GeV and the LHC energy $\sqrt{s_{NN}} = 2.76$ TeV. In contrast to the…

Nuclear Theory · Physics 2021-05-19 Dariusz Prorok

It is shown that the chemical freeze-out parameters obtained at CERN/SPS, BNL/AGS and GSI/SIS energies all correspond to a unique value of 1 GeV per hadron in the local rest frame of the system, independent of the beam energy and of the…

Nuclear Theory · Physics 2009-10-31 J. Cleymans , K. Redlich

The hadronic phase in heavy-ion collisions plays a crucial role in shaping the final-state hadron abundances. In this work, we study Au+Au collisions at $\sqrt{s_{\rm NN}}$ = 7.7-200 GeV using the Hadron Resonance Gas model in Partial…

Nuclear Theory · Physics 2026-01-29 Rishabh Sharma , Chitrasen Jena , Volodymyr Vovchenko

We study the production of light nuclei in Au+Au collisions at $\sqrt{s_\mathrm{NN}}$ = 7.7 - 200 GeV and Pb+Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 and 5.02 TeV within a flavour-dependent freeze-out framework, assuming different…

High Energy Physics - Phenomenology · Physics 2025-10-02 Rishabh Sharma , Fernando Antonio Flor , Sibaram Behera , Chitrasen Jena , Helen Caines

New results of the NA61/SHINE Collaboration at the CERN SPS on mean hadron multiplicities in proton-proton (p+p) interactions are analyzed within the transport models and the hadron resonance gas (HRG) statistical model. The chemical…

Nuclear Theory · Physics 2016-07-07 V. Vovchenko , V. V. Begun , M. I. Gorenstein

Searchers for various irregularities in the behavior of thermodynamic quantities at chemical freeze-out (CFO) are rather important in a view of experimental studies of quark-gluon plasma (QGP). Using the multicomponent hadron resonance gas…

Nuclear Theory · Physics 2017-01-03 V. V. Sagun , K. A. Bugaev , A. I. Ivanytskyi , D. R. Oliinychenko

The STAR experiment at RHIC has completed its first phase of the Beam Energy Scan (BES-I) program to understand the phase structure of the quantum chromodynamics (QCD). The bulk properties of the system formed in Au+Au collisions at…

Nuclear Experiment · Physics 2015-04-07 Sabita Das

Here we thoroughly discuss some weak points of the thermal model which is traditionally used to describe the hadron multiplicities measured in the central nucleus-nucleus collisions. In particularly, the role of conservation laws, the…

High Energy Physics - Phenomenology · Physics 2014-04-18 D. R. Oliinychenko , K. A. Bugaev , A. S. Sorin

Lepto-nuclear colliders offer unique experimental opportunities to probe QCD in an extended medium. Of the many possibilities, three experiments are described here that are clearly feasible and of high scientific importance. First, a direct…

Nuclear Experiment · Physics 2010-11-19 W K Brooks