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We attempt to describe the rapidity and transverse momentum spectra of strange as well as non-strange hadrons e.g. cascade,cascadebar, lambda , lambdabar, proton, protonbar,(omega+omegabar, Kaon, anti-Kaon and their ratios in the…

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

An influence of the repulsive interactions on matter properties is considered within the excluded volume van der Waals hadron-resonance gas model. Quantitative results are presented for matter at the chemical freeze-out in central…

Nuclear Theory · Physics 2013-08-28 V. V. Begun , M. Gaździcki , M. I. Gorenstein

The experimental determination of freeze-out temperatures and densities from the yields of light elements emitted in heavy ion collisions is discussed. Results from different experimental approaches are compared with those of model…

The recently discovered sharp peak in the excitation function of the K+/pi+ ratio around 30 A GeV in relativistic heavy-ion collisions is discussed in the framework of the Statistical Model. In this model, the freeze-out of an ideal hadron…

Nuclear Theory · Physics 2008-11-26 H. Oeschler , J. Cleymans , K. Redlich , S. Wheaton

We determine chemical freeze-out conditions from strangeness observables measured at RHIC beam energies. Based on a combined analysis of lowest-order net-Kaon fluctuations and strange anti-baryon over baryon yield ratios we obtain visibly…

Nuclear Theory · Physics 2019-02-26 Marcus Bluhm , Marlene Nahrgang

We investigate the equation of state of hadronic matter at finite values of baryon density and temperature reachable in high energy heavy ion collisions. The analysis is performed by requiring the Gibbs conditions on the global conservation…

Nuclear Theory · Physics 2010-05-19 A. Lavagno

We study chemical freeze-out parameters for heavy-ion collisions by performing two different thermal analyses. We analyze results from thermal fits for particle yields, as well as, net-charge fluctuations in order to characterize the…

We investigate the freeze-out conditions of a particle in an expanding system of interacting particles in order to understand the productions of resonances, hadronic molecules and light nuclei in heavy ion collisions. Applying the kinetic…

Nuclear Theory · Physics 2018-02-28 Sungtae Cho , Taesoo Song , Su Houng Lee

We introduce a novel approach based on elastic and inelastic scattering rates to extract the hyper-surface of the chemical freeze-out from a hadronic transport model in the energy range from E$_\mathrm{lab}=1.23$ AGeV to…

Nuclear Theory · Physics 2023-02-28 Tom Reichert , Gabriele Inghirami , Marcus Bleicher

We present a detailed study of chemical freeze-out in nucleus-nucleus collisions at beam energies of 11.6, 30, 40, 80 and 158A GeV. By analyzing hadronic multiplicities within the statistical hadronization approach, we have studied the…

Nuclear Theory · Physics 2009-11-10 Jaakko Manninen , Francesco Becattini , Antti Keranen , Marek Gazdzicki , Reinhard Stock

A thermodynamically consistent excluded volume model is proposed to account for the particle multiplicities obtained from lowest SIS energies to the highest RHIC energies. The chemical freeze-out volumes lying in a slice of one unit of…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Mishra , C. P. Singh

One of the most remarkable results to emerge from heavy-ion collisions over the past two decades is the striking regularity shown by particle yields at all energies. This has led to several very successful proposals describing particle…

High Energy Physics - Phenomenology · Physics 2011-05-05 J. Cleymans , H. Oeschler , K. Redlich , S. Wheaton

It is shown that the condition for chemical freeze-out, average energy per hadron approximately 1 GeV, selects the softest point of the equation of state, namely the point where the pressure divided by the energy density has a minimum. The…

Nuclear Theory · Physics 2009-09-25 V. D. Toneev , J. Cleymans , E. G. Nikonov , K. Redlich , A. A. Shanenko

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

The decoupling and freeze-out of energetic nuclear collisions is analysed in terms of transparent semi-classical decoupling formulae. They provide a smooth transition and generalise frequently employed instantaneous freeze-out procedures.…

Nuclear Theory · Physics 2010-10-20 Joern Knoll

One surprising result in relativistic heavy-ion collisions is that the abundance of various particles measured in experiments is consistent with the picture that they reach chemical equilibrium at a temperature much higher than the…

Nuclear Theory · Physics 2017-07-06 Jun Xu , Che Ming Ko

By measuring hadronic single-particle spectra and two-particle correlations in heavy-ion collisions, the size and dynamical state of the collision fireball at freeze-out can be reconstructed. I discuss the relevant theoretical methods and…

Nuclear Theory · Physics 2007-05-23 Ulrich Heinz

The baryon-number density formed in relativistic nuclear collisions, versus the chemical potential of the freeze-out states, is systematically studied on the basis of existing measurements. A remarkable power-law behaviour of the…

High Energy Physics - Phenomenology · Physics 2010-04-06 N. G. Antoniou , F. K. Diakonos , A. S. Kapoyannis

Systematic trend of the hadron freeze-out conditions from AGS/SPS to RHIC is discussed. The most interesting results from collisions at RHIC are that the system is indeed approaching net-baryon free and the transverse expansion is much…

Nuclear Experiment · Physics 2014-11-18 Nu Xu , Masashi Kaneta

By measuring hadronic single-particle spectra and two-particle correlations in heavy-ion collisions, the size and dynamical state of the collision fireball at freeze-out can be reconstructed. I discuss the relevant theoretical methods and…

Nuclear Theory · Physics 2007-05-23 Ulrich Heinz