Centrality Dependence of Chemical Freeze-out in Au+Au Collisions at RHIC

Details Centrality Dependence of Chemical Freeze-out in Au+Au Collisions at RHIC Centrality Dependence of Chemical Freeze-out in Au+Au Collisions at RHIC

2004-05-25

arxiv.org/abs/nucl-th/0405068v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, 3 figures. A write-up of a poster presented in the international conference Quark Matter 2004 at Oakland, CA

Scientific paper

We will report centrality dependence of chemical freeze-out temperature ($T_{ch}$), light quark chemical potential ($\mu_{q}$), strange quark chemical potential ($\mu_{s}$), and strangeness saturation factor ($\gamma_{s}$) in Au+Au collisions at $\sqrt{s_{NN}}$ = 130 and 200 GeV. A systematic study for combination of ratios for chemical freeze-out fit is studied and we have found small ombination dependences. The results show $\gamma_{s}$ increasing with centrality but the other parameters have less sensitivity to the centralities.

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