Validity of the Hadronic Freeze-Out Curve
High Energy Physics - Phenomenology
2012-04-24 v1 Nuclear Theory
Abstract
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.
Keywords
Cite
@article{arxiv.1107.1574,
title = {Validity of the Hadronic Freeze-Out Curve},
author = {F. Becattini and M. Bleicher and T. Kollegger and M. Mitrovski and T. Schuster and R. Stock},
journal= {arXiv preprint arXiv:1107.1574},
year = {2012}
}
Comments
5 pages, 8 figures. To appear in the proceedings of Quark Matter 2011, the XXII International Conference on Ultrarelativistic Nucleus-Nucleus Collisions