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arXiv · hep-ph/0202071

Hadrosynthesis at SPS and RHIC and the statistical model

F. Becattini
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Abstract

An analysis of hadron abundances in heavy ion collisions from SPS to RHIC energy within the statistical-thermal model is presented. Pb--Pb collisions at 40 A GeV are analysed for the first time here. Unlike stated in similar recent studies, the data analysis rules out a complete strange chemical equilibrium in full phase space. In fact, the use of multiplicities integrated in full phase space or in a limited rapidity window at SPS energy gives rise to different results for the extra-strangeness suppression parameter gamma_S while the extracted values of temperature and baryon-chemical potential do not vary significantly. This behaviour rises the question whether the observed hadronic strangeness phase space saturation at RHIC within a small mid-rapidity window would hold in a possible full phase space analysis.

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F. Becattini. 2002-02-07. Hadrosynthesis at SPS and RHIC and the statistical model. https://doi.org/10.1088/0954-3899%2F28%2F7%2F305

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