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The isotope yields of fragments, produced in the decay of the quasiprojectile in Au+Au peripheral collisions at 35 MeV/nucleon and those coming from the disassembly of the unique source formed in Xe+Cu central reactions at 30 MeV/nucleon,…

We use a boost-invariant one-dimensional (cylindrically symmetric) fluid dynamics code to calculate $e^+e^-$ production from $\rho^0$ and $\omega$ decay in the central rapidity region of a central S+Au collision at $\sqrt{s}=20$…

Nuclear Theory · Physics 2008-11-26 John J. Neumann , David Seibert , George Fai

Transverse momentum spectra of pion, proton, lambda, cascade, Omega and deuteron (d) in different centrality intervals in nucleus nucleus collisions at the center of mass energy are analyzed by the blast wave model with Boltzmann Gibbs…

High Energy Physics - Phenomenology · Physics 2021-04-27 M. Waqas , G. X. Peng

Two-proton correlation functions have been measured in Si+Pb collisions at 14.6A GeV/c and Au+Au collisions at 11.5A GeV/c by the E814/E877 collaboration. Data are compared with predictions of the transport model RQMD and the source size is…

Nuclear Experiment · Physics 2012-08-27 E877 Collaboration , J. Barrette

We study the kinetic freeze-out conditions of hadrons in Au+Au collisions at 11.6 A GeV/c using different parametrizations of an expanding thermal fireball. We take into account the available double differential momentum spectra of a…

Nuclear Theory · Physics 2009-10-09 Harald Dobler , Josef Sollfrank , Ulrich Heinz

A thermal-model analysis of particle production of p-p collisions at sqrt(s) = 17 GeV using the latest available data is presented. The sensitivity of model parameters on data selections and model assumptions is studied. The system-size…

High Energy Physics - Phenomenology · Physics 2014-11-20 I. Kraus , J. Cleymans , H. Oeschler , K. Redlich

The kinetic freeze-out temperatures, $T_0$, in nucleus-nucleus collisions at the Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies are extracted by four methods: i) the Blast-Wave model with Boltzmann-Gibbs…

Nuclear Theory · Physics 2018-05-01 Hai-Ling Lao , Fu-Hu Liu , Bao-Chun Li , Mai-Ying Duan

The present knowledge about hadrons produced in relativistic heavy ion collisions is compatible with chemical freeze-out happening when the energy density divided by the particle density reaches the value of 1 GeV. This observation is used…

Nuclear Theory · Physics 2014-11-18 J. Cleymans , K. Redlich

We study properties of Pb-Pb collisions at 2.76 TeV in mid-rapidity, $|y|<0.5$, based on data by the ALICE Collaboration. In particular, we examine the transverse momentum ($p_T$) spectra of positively charged (identified) hadrons, $\pi^+$,…

High Energy Physics - Phenomenology · Physics 2025-07-11 M. Waqas , Hassan Ali Khan , Wolfgang Bietenholz , Muhammad Ajaz , Jihane Ben Slimane , Haifa I. Alrebdi , A. Haj Ismail

Analyzing the m_t-spectrum and two-particle correlations of negative hadrons from 158 AGeV/c Pb+Pb collisions at slightly forward rapidities we find a (thermal) freeze-out temperature of about 100 MeV and transverse flow with <v_t>…

Nuclear Theory · Physics 2009-10-09 Boris Tomasik , Urs Achim Wiedemann , Ulrich Heinz

We analyze the transverse momentum ($p_T$) spectra, $1/N_{ev}$[(1/2$\pi$$p_T$) $d^2$$N$/$dyd$$p_T$], of kaon, proton, deuteron and triton in different centrality events in gold-gold (Au-Au) collisions at Relativistic Heavy Ion Collisions…

Nuclear Theory · Physics 2022-05-30 M. Waqas , G. -X. Peng , M. Ajaz , A. Haj Ismail , Z. Wazir , L. -L. Li

Isotope temperatures from double ratios of hydrogen, helium, lithium, beryllium, and carbon isotopic yields, and excited-state temperatures from yield ratios of particle-unstable resonances in 4He, 5Li, and 8Be, were determined for…

The momentum or transverse momentum spectra of antiprotons produced at mid-rapidity in proton-helium ($p$+He), gold-gold (Au+Au), deuton-gold ($d$+Au), and lead-lead (Pb+Pb) collisions over an energy range from a few GeV to a few TeV are…

High Energy Physics - Phenomenology · Physics 2019-12-03 Qi Wang , Fu-Hu Liu

Multifragment disintegrations, measured for central Au + Au collisions at E/A = 35 MeV, are analyzed with the Statistical Multifragmentation Model. Charge distributions, mean fragment energies, and two-fragment correlation functions are…

We show how the measured particle ratios can be used to provide non-trivial information about the critical temperature of the QCD phase transition. This is obtained by including the effects of highly massive Hagedorn resonances on…

Nuclear Theory · Physics 2014-11-20 J. Noronha-Hostler , H. Ahmad , J. Noronha , C. Greiner

We fit the single-particle $p_t$ spectra of identified pions, kaons, and (anti)protons from central collisions of gold or lead nuclei at energies between 7.7 and 2760~GeV per nucleon pair. Blast wave model with included resonance production…

Nuclear Theory · Physics 2020-04-22 Ivan Melo , Boris Tomasik

The centrality dependence of the $p/\pi$ ratio measured by the ALICE Collaboration in 5.02 TeV Pb-Pb collisions indicates a statistically significant suppression with the increase of the charged particle multiplicity once the…

Nuclear Theory · Physics 2022-11-22 Volodymyr Vovchenko , Volker Koch

From experimental observations of limiting temperatures in heavy ion collisions we derive Tc, the critical temperature of infinite nuclear matter. The critical temperature is 16.6 +- 0.86 MeV. Theoretical model correlations between Tc, the…

Nuclear Experiment · Physics 2009-11-07 J. B. Natowitz , K. Hagel , Y. Ma , M. Murray , L. Qin , R. Wada , J. Wang

Microscopic calculations of central collisions between heavy nuclei are used to study fragment production and the creation of collective flow. It is shown that the final phase space distributions are compatible with the expectations from a…

We study the kinetic freeze out conditions of bulk hadrons in nuclear collisions. The transverse and longitudinal momentum spectra of the identified hadrons produced in central Au+Au and Pb+Pb collisions, in the beam energy range of $E_b =…

Nuclear Theory · Physics 2018-08-15 Sudhir Pandurang Rode , Partha Pratim Bhaduri , Amaresh Jaiswal , Ankhi Roy