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Using an advanced version of the hadron resonance gas model we have found several remarkable irregularities at chemical freeze-out. The most prominent of them are two sets of highly correlated quasi-plateaus in the collision energy…

Using the most advanced model of the hadron resonance gas we reveal, at chemical freeze-out, remarkable irregularities such as an abrupt change of the effective number of degrees of freedom and plateaus in the collision-energy dependence of…

Using an advanced version of the hadron resonance gas model we have found indications for irregularities in data for hadrons produced in relativistic heavy-ion collisions. These include an abrupt change of the effective number of degrees of…

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

A systematic analysis of data on strangeness and pion production in nucleon-nucleon and central nucleus-nucleus collisions is presented. It is shown that at all collision energies the pion/baryon and strangeness/pion ratios indicate…

核理论 · 物理学 2008-11-26 Marek Gazdzicki

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…

核理论 · 物理学 2017-01-03 V. V. Sagun , K. A. Bugaev , A. I. Ivanytskyi , D. R. Oliinychenko

Preliminary experimental data for particle number ratios in the collisions of Au+Au at the BNL AGS (11$A$ GeV/$c$) and Pb+Pb at the CERN SPS (160$A$ GeV/$c$) are analyzed in a thermodynamically consistent hadron gas model with excluded…

核理论 · 物理学 2009-10-30 M. I. Gorenstein , H. Stoecker , G. D. Yen , S. N. Yang , W. Greiner

In high-energy nuclear collisions, the new phase of the quark-gluon plasma is indicated by an anomalous increase in pressure, an excess of direct photon production, an excess of strangeness production, and an anomalous J/psi suppression. We…

核理论 · 物理学 2011-08-11 Cheuk-Yin Wong

Heavy-ion collision experiments at RHIC and the LHC have found a new emergent phase of QCD, a strongly coupled quark-gluon plasma (sQGP) that is distinctively different from either the low temperature hadron phase or the very high…

核理论 · 物理学 2017-03-08 Jinfeng Liao

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…

高能物理 - 唯象学 · 物理学 2008-11-26 F. Becattini , M. Gazdzicki , A. Keranen , J. Manninen , R. Stock

We review the methods and results obtained in an analysis of the experimental heavy ion collision research program at nuclear beam energy of 160-200A GeV. We study strange, and more generally, hadronic particle production experimental data.…

核理论 · 物理学 2009-11-06 Jean Letessier , Johann Rafelski

Baryon number fluctuations are sensitive to the QCD phase transition and QCD critical point. According to the Feynman rules of finite-temperature field theory, we calculated various order moments and cumulants of the baryon number…

核理论 · 物理学 2017-04-07 Ameng Zhao , Xiaofeng Luo , Hongshi Zong

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 discuss recent data on particle production with emphasis on the degree of thermal and chemical equilibration achieved. The data are interpreted in terms of a resonance gas model. The phase boundary constructed between the resonance gas…

核理论 · 物理学 2009-10-30 P. Braun-Munzinger , J. Stachel

Using the most advanced formulation of the hadron resonance gas model we analyze the two sets of irregularities found at chemical freeze-out of central nuclear-nuclear collisions at the center of mass energies 3.8-4.9 GeV and 7.6-9.2 GeV.…

We analyze multiparticle production in a thermal framework for 7 central nucleus nucleus collisions, $e^+$+ $e^-$ annihilation into hadrons on the Z resonance and 4 hadronic reactions (p+p and p+$\bar{p}$ with partial centrality selec…

高能物理 - 唯象学 · 物理学 2008-11-26 Sonja Kabana , Peter Minkowski

Abundances and $m_\bot$-spectra of strange and other hadronic particles emanating from central 158-200 A GeV reactions between nuclei are found to originate from a thermally equilibrated, deconfined source in chemical non-equilibrium.…

高能物理 - 唯象学 · 物理学 2007-05-23 Johann Rafelski , Jean Letessier

The performed systematic meta-analysis of the quality of data description (QDD) of existing event generators of nucleus-nucleus collisions allows us to extract a very important physical information. Our meta-analysis is dealing with the…

高能物理 - 唯象学 · 物理学 2015-04-27 V. A. Kizka , V. S. Trubnikov , K. A. Bugaev , D. R. Oliinychenko

We briefly discuss four different possible types of transitions from quark to hadronic matter and their characteristic signatures in terms of correlations. We also highlight the effects arising from mass modification of hadrons in hot and…

核理论 · 物理学 2011-08-04 T. Csorgo , Sandra S. Padula

We argue that hadron multiplicities in central high energy nucleus-nucleus collisions are established very close to the phase boundary between hadronic and quark matter. In the hadronic picture this can be described by multi-particle…

核理论 · 物理学 2008-11-26 P. Braun-Munzinger , J. Stachel , C. Wetterich
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