Hadron production in non linear relativistic mean field models

Details Hadron production in non linear relativistic mean field models Hadron production in non linear relativistic mean field models

2007-11-22

arxiv.org/abs/0711.3631v2

Nucl.Phys.A826:178-189,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 2 figures

Scientific paper

10.1016/j.nuclphysa.2009.05.002

By using a parametrization of the non-linear Walecka model which takes into account the binding energy of different hyperons, we present a study of particle production yields measured in central Au-Au collision at RHIC. Two sets of different hyperon-meson coupling constants are employed in obtaining the hadron production and chemical freeze-out parameters. These quantities show a weak dependence on the used hyperon-meson couplings. Results are in good overall accordance with experimental data. We have found that the repulsion among the baryons is quite small and, through a preliminary analysis of the effective mesonic masses, we suggest a way to improve the fittings.

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