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

  • 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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Author:Juan M. Torres-RinconORCiDGND, Jörg AichelinORCiDGND, Hannah Petersen, Jean-Bernard Rose, Joseph Tindall
URN:urn:nbn:de:hebis:30:3-500383
DOI:https://doi.org/10.1051/epjconf/201817114007
ISSN:2100-014X
Parent Title (English):EPJ Web of Conferences
Publisher:EDP Sciences
Place of publication:Les Ulis
Document Type:Conference Proceeding
Language:English
Year of Completion:2018
Date of first Publication:2018/02/02
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:17th International Conference on Strangeness in Quark Matter (SQM 2017)
Release Date:2019/05/02
Volume:171
Issue:Article Number 14007
Page Number:4
HeBIS-PPN:449335364
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0