Net-baryon number distributions and the QCD phase diagram
R. N. Rogalyov, N. V. Gerasimeniuk
Abstract
Net-proton multiplicity distributions obtained by the STAR collaboration are analyzed in the grand canonical approach. A method of finding the baryon chemical potential μB immediately from such distributions is applied for the first time. The obtained values of μB are consistent both with those determined earlier using the statistical thermal model and with the results of the fit based on the Hadron Resonance Gas (HRG) model. We propose a criterion of thermalization of fireballs produced in heavy-nuclei collisions.
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