Validity of the Hadronic Freeze-Out Curve

Details Validity of the Hadronic Freeze-Out Curve Validity of the Hadronic Freeze-Out Curve

2011-07-08

arxiv.org/abs/1107.1574v1

J.Phys.G G38 (2011) 124075

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 8 figures. To appear in the proceedings of Quark Matter 2011, the XXII International Conference on Ultrarelativistic

Scientific paper

10.1088/0954-3899/38/12/124075

We analyze hadro-chemical freeze-out in central Pb+Pb collisions at CERN SPS energies, employing the hybrid version of UrQMD which models hadronization by the Cooper-Frye mechanism, and matches to a final hadron-resonance cascade. We fit the results both before and after the cascade stage using the Statistical Hadronization Model, to assess the effect of the cascade phase. We observe a strong effect on antibaryon yields except anti-{\Omega}, resulting in a shift in T and {\mu}_B. We discuss the implications for the freeze-out curve.

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