https://doi.org/10.1051/epjconf/201817114007
Melting and freeze-out conditions of hadrons in a thermal medium
1
Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, 60438 Frankfurt am Main, Germany
2
Subatech, UMR 6457, IN2P3/CNRS, Université de Nantes, École de Mines de Nantes, 4 rue Alfred Kastler, 44307 Nantes, France
3
Institute for Theoretical Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt a.M., Germany
4
GSI Helmholtzzentrum für Schwerionenforschung, Planck-Str. 1, 64291 Darmstadt, Germany
5
Department of Physics, University of Bath, Claverton Down, Bath, United Kingdom
* Speaker, e-mail: torres@fias.uni-frankfurt.de
Published online: 2 February 2018
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.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
