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arXiv · 1208.4107

Hadron-Resonance Gas at Freeze-out: Reminder on Importance of Repulsive Interactions

V. V. Begun·M. Gaździcki·M. I. Gorenstein
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Abstract

An influence of the repulsive interactions on matter properties is considered within the excluded volume van der Waals hadron-resonance gas model. Quantitative results are presented for matter at the chemical freeze-out in central nucleus-nucleus collisions at relativistic energies. In particular, it is shown that repulsive interactions connected to non-zero size of created particles lead to a significant decrease of collision energy at which the net-baryon density has a maximum. A position of the transition point from baryon to meson dominated matter depends on the difference between baryon and meson hard-core radiuses.

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V. V. Begun, M. Gaździcki, M. I. Gorenstein. 2013-08-27. Hadron-Resonance Gas at Freeze-out: Reminder on Importance of Repulsive Interactions. https://doi.org/10.1103/physrevc.88.024902

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