Hadron production in central nucleus-nucleus collisions at chemical freeze-out

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dc.creatorAndronic, A.
dc.creatorBraun-Munzinger, P.
dc.creatorStachel, J.
dc.date2005-11-25
dc.date2006-03-27
dc.date.accessioned2026-07-07T11:28:20Z
dc.date.available2026-07-07T11:28:20Z
dc.descriptionWe analyze the experimental hadron yield ratios for central nucleus-nucleus collisions in terms of thermal model calculations over a broad energy range, $\sqrt{s_{NN}}$=2.7-200 GeV. The fits of the experimental data with the model calculations provide the thermal parameters, temperature and baryo-chemical potential at chemical freeze-out. We compare our results with the values obtained in other studies and also investigate more technical aspects such as a potential bias in the fits when fitting particle ratios or yields. Using parametrizations of the temperature and baryonic chemical potential as a function of energy, we compare the model calculations with data for a large variety of hadron yield ratios. We provide quantitative predictions for experiments at LHC energy, as well as for the low RHIC energy of 62.4 GeV. The relation of the determined parameters with the QCD phase boundary is discussed.
dc.description38 pages, 25 figures - accepted to Nucl. Phys. A; v2: update fits of 4pi data,update on NA44 data at top SPS, fits at top RHIC without resonances; v3: include fits of absolute yields (appendix). Model calculations and data files available at http://www-linux.gsi.de/~andronic/physics/s/s.html
dc.identifierhttps://arxiv.org/abs/nucl-th/0511071
dc.identifierhttp://arxiv.org/abs/nucl-th/0511071
dc.identifierNucl.Phys.A772:167-199,2006
dc.identifierdoi:10.1016/j.nuclphysa.2006.03.012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196408
dc.subjectNuclear Theory
dc.subjectNuclear Experiment
dc.titleHadron production in central nucleus-nucleus collisions at chemical freeze-out
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