Thermal hadron production in relativistic nuclear collisions

Details Thermal hadron production in relativistic nuclear collisions Thermal hadron production in relativistic nuclear collisions

2009-01-19

arxiv.org/abs/0901.2909v2

Acta Phys.Polon.B40:1005-1012,2009

Physics

Nuclear Physics

Nuclear Theory

8 pages, 4 figures (v2: typo in Eq.1 corrected); to appear in the proceedings of the IV Workshop on Particle Correlations and

Scientific paper

We present the status of the description of hadron production in central nucleus-nucleus collisions within the statistical model . Extending previous studies by inclusion of very high-mass resonances (m>2 GeV), and the up-to-now neglected scalar $\sigma$ meson leads to an improved description of the data. In particular, the hitherto poorly reproduced energy dependence of the K+/pi+ ratio at SPS energies ("the horn") is now well described through the connection to the hadronic mass spectrum and, implicitly, Hagedorn's limiting temperature.

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