Centrality dependence of thermal parameters deduced from hadron multiplicities in Au + Au collisions at s NN </mml:…
2005; American Institute of Physics; Volume: 71; Issue: 5 Linguagem: Inglês
10.1103/physrevc.71.054901
ISSN1538-4497
AutoresJ. Cleymans, B. Kämpfer, M. Kaneta, S. Wheaton, N. Xu,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoWe analyze the centrality dependence of thermal parameters deduced from hadron multiplicities in Au+Au collisions at $\sqrt{{s}_{\mathrm{NN}}}=130 \mathrm{GeV}$. Although the chemical freeze-out temperature and chemical potentials are found to be roughly centrality independent, the strangeness saturation factor ${\ensuremath{\gamma}}_{S}$ increases with participant number toward unity, supporting the assumption of equilibrium freeze-out conditions in central collisions.
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