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arXiv · 1710.09406

Melting and freeze-out conditions of hadrons in a thermal medium

Juan M. Torres-Rincon·Joerg Aichelin·Hannah Petersen·Jean-Bernard Rose·Joseph Tindall
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Abstract

We describe two independent frameworks which provide unambiguous determinations of the deconfinement and the decoupling conditions of a relativistic gas at finite temperature. First, we use the Polyakov-Nambu-Jona-Lasinio model to compute meson and baryon masses at finite temperature and determine their melting temperature as a function of their strangeness content. Second, we analyze a simple expanding gas within a Friedmann-Robertson-Walker metric, which admits a well-defined decoupling mechanism. We examine the decoupling time as a function of the particle mass and cross section. We find evidences of an inherent dependence of the hadronization and freeze-out conditions on flavor, and on mass and cross section, respectively.

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Juan M. Torres-Rincon, Joerg Aichelin, Hannah Petersen, Jean-Bernard Rose, Joseph Tindall. 2017-10-25. Melting and freeze-out conditions of hadrons in a thermal medium. https://doi.org/10.1051/epjconf/201817114007

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