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The lattice QCD data of pressure and the energy density have been used to extract the hadronic radius parameter of the excluded volume hadron resonance gas (EVHRG) model. The equation of state can be described well with the extracted radius…

高能物理 - 唯象学 · 物理学 2018-06-06 Subhasis Samanta

Detailed knowledge of the hadronic spectrum is still an open question, which has phenomenological consequences on the study of heavy-ion collisions. A previous lattice QCD study concluded that additional strange resonances are missing in…

高能物理 - 唯象学 · 物理学 2020-07-16 P. Alba , V. Mantovani Sarti , J. Noronha-Hostler , P. Parotto , I. Portillo-Vazquez , C. Ratti , J. M. Stafford

The relation between the effective degrees of freedom (EDOF) and the trace anomaly is studied in the hadron resonance gas (HRG) model. If we regard the thermodynamical relation as the evolution equation and define the EDOF as P/T^4, where P…

高能物理 - 唯象学 · 物理学 2026-03-23 Hiroaki Kouno , Riki Oshima , Kouji Kashiwa

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 influence of global rotation on the chemical freeze-out parameters in ultra-relativistic heavy-ion collisions. Within the framework of the hadron resonance gas (HRG) model, the freeze-out parameters are determined using…

高能物理 - 唯象学 · 物理学 2026-03-31 Nandita Padhan , Kshitish Kumar Pradhan , Arghya Chatterjee , Raghunath Sahoo

We present an elaborate version of the hadron resonance gas model with the combined treatment of separate chemical freeze-outs for strange and non-strange hadrons and with an additional $\gamma_{s}$ factor which accounts for the remaining…

We calculate the non-normalized moments of the particle multiplicity within the framework of the hadron resonance gas (HRG) model. At finite chemical potential $\mu$, a non-monotonic behavior is observed in the thermal evolution of third…

高能物理 - 唯象学 · 物理学 2014-03-18 A. Tawfik

We investigate the difference between hadron resonance gas (HRG) calculations for chemical freeze-out parameters at fully and partly chemical equilibria. To this end, the results are compared with the particle ratios measured in central…

核理论 · 物理学 2015-08-20 Abdel Nasser Tawfik , M. Y. El-Bakry , D. M. Habashy , M. T. Mohamed , Ehab Abbas

A detailed discussion of recent results obtained within the hadron resonance gas model with the multi-component hard core repulsion is presented. Among them there are the adiabatic chemical freeze-out criterion, the concept of separate…

高能物理 - 唯象学 · 物理学 2015-01-27 K. A. Bugaev , A. I. Ivanytskyi , D. R. Oliinychenko , E. G. Nikonov , V. V. Sagun , G. M. Zinovjev

We propose an elaborate version of the hadron resonance gas model with the combined treatment of separate chemical freeze-outs for strange and non-strange hadrons and with an additional \gamma_{s} factor which accounts for the remaining…

高能物理 - 唯象学 · 物理学 2013-12-19 K. A. Bugaev , D. R. Oliinychenko , V. V. Sagun , A. I. Ivanytskyi , J. Cleymans , E. G. Nikonov , G. M. Zinovjev

We investigate the chemical freeze-out in heavy-ion collisions (HICs) and the impact of the hadronic spectrum on thermal model analyses. Detailed knowledge of the hadronic spectrum is still an open question, which has phenomenological…

An extension of the ideal hadron resonance gas (HRG) model is constructed which includes the attractive and repulsive van der Waals (VDW) interactions between baryons. This VDW-HRG model yields the nuclear liquid-gas transition at low…

高能物理 - 唯象学 · 物理学 2017-05-22 Volodymyr Vovchenko , Mark I. Gorenstein , Horst Stoecker

Two approaches to treat the chemical freeze-out of strange particles in hadron resonance gas model are analyzed. The first one employs their non-equillibration via the usual \gamma_s factor and such a model describes the hadron…

高能物理 - 唯象学 · 物理学 2015-06-16 K. A. Bugaev , D. R. Oliinychenko , J. Cleymans , A. I. Ivanytskyi , I. N. Mishustin , E. G. Nikonov , V. V. Sagun

We compare lattice QCD results for appropriate combinations of net strangeness fluctuations and their correlations with net baryon number fluctuations with predictions from two hadron resonance gas (HRG) models having different strange…

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…

核理论 · 物理学 2013-12-02 A. Tawfik , E. Abbas

The Hadron-Resonance Gas (HRG) approach - used to model hadronic matter at small baryon potentials $\mu_B$ and finite temperature $T$ - is extended to finite and large chemical potentials by introducing interactions between baryons in line…

高能物理 - 唯象学 · 物理学 2018-07-25 Thorsten Steinert , Wolfgang Cassing

The proposed analogy between hadron production in high-energy collisions and Hawking-Unruh radiation process in the black holes shall be extended. This mechanism provides a theoretical basis for the freeze-out parameters, the temperature…

高能物理 - 唯象学 · 物理学 2015-10-12 Abdel Nasser Tawfik , Hayam Yassin , Eman R. Abo Elyazeed

In the discussion of hadronization at or close to the freeze-out curve statistical (hadron resonance gas) models play an important role. In particular, in the charmonium sector, regeneration models are considered which rely on the fact that…

高能物理 - 格点 · 物理学 2015-06-22 Sayantan Sharma

In the framework of a constituent quark mass model, the modified baryon masses are incorporated into the hadron resonance gas (HRG) based analysis of the like mass particle ratios in ultra relativistic nucleus-nucleus collisions (URNNC)…

高能物理 - 唯象学 · 物理学 2024-11-25 Nasir Ahmad Rather , Sameer Ahmad Mir , Iqbal Mohi Ud Din , Saeed Uddin

In high energy collisions, a dense, strongly interacting medium could be created, the quark gluon plasma. In rapid expansion, from the soup of quarks and gluons a gas of resonance and stable particles is formed at the chemical freeze-out…

高能物理 - 唯象学 · 物理学 2022-10-14 Sandor Lokos , Boris Tomasik
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