Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-11-16
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 2 figures. Revised version accepted for publication in Eur. Phys. J. C
Scientific paper
We perform a systematic comparison of the statistical model parametrization of hadron abundances measured in high energy pp, AA and e+e- collisions. The basic aim of the study is to test if the quality of the description depends on the nature of the collision process. In particular, we want to see if nuclear collisions, with multiple initial interactions, lead to "more thermal" average multiplicities than elementary pp collisions or e+e- annihilation. Such a comparison is meaningful only if it is based on data for the same or similar hadronic species and if the analyzed data has quantitatively similar errors. When these requirements are maintained, the quality of the statistical model description is found to be the same for the different initial collision configurations.
Becattini Francesco
Castorina Paolo
Milov Alexander
Satz Helmut
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