Energy dependence of strangeness production

Details Energy dependence of strangeness production Energy dependence of strangeness production

2004-12-08

arxiv.org/abs/nucl-ex/0412013v2

J.Phys. G31 (2005) S911-S918

Physics

Nuclear Physics

Nuclear Experiment

Submitted to J. Phys. G (Proceedings of the 8th International Conference on Strangeness in Quark Matter, Cape Town, South Afri

Scientific paper

10.1088/0954-3899/31/6/035

We present a summary of strange particle yields measured by the experiment NA49 in central Pb+Pb collisions in the beam energy range 20-158 AGeV. The comparison with thermal hadron model results shows that above 30 AGeV, a strangeness undersaturation parameter gamma_S must be employed to describe the data. This suggests a change in the strangeness production mechanism at this energy. We find that the UrQMD transport model in all cases underpredicts the observed particle yields.

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