Energy dependence of strangeness production
نویسنده
چکیده
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 γS 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 yield ratios. Submitted to: J. Phys. G: Nucl. Phys.
منابع مشابه
ar X iv : h ep - p h / 05 07 27 6 v 1 2 5 Ju l 2 00 5 System - size dependence of strangeness production in high - energy A +
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