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Thermal fits of hadron abundances in heavy ion collisions

✍ Scribed by F. Becattini; M. Gaździcki; J. Sollfrank

Book ID
104355559
Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
391 KB
Volume
71
Category
Article
ISSN
0920-5632

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✦ Synopsis

It is shown that the hadron multiplicities measured in central nucleus-nucleus at CERN SPS are in agreement with a hadron gas model supplemented with a strangeness suppression parameter 7s. The full chemical equilibrium version of the model falls to describe the data. The freeze-out temperature of about 180 MeV seems to be independent of the system size (from S+S to Pb+Pb) and in agreement with that extracted in e + + e-, p + p and p + p collisions. The observed strangeness enhancement in nucleus-nucleus collisions can not be attributed to the increased system size at the hadron level.

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