Cluster production and the chemical freeze-out in expanding hot dense matter

We discuss medium effects on light cluster production in the QCD phase diagram by relating Mott transition lines to those for chemical freeze-out. In heavy-ion collisions at highest energies provided by the LHC, light cluster abundances should follow the statistical model because of low baryon densi...

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Bibliographic Details
Published inarXiv.org
Main Authors Blaschke, D, Liebing, S, Röpke, G, Dönigus, B
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.08.2024
Subjects
Alpha rays
Clusters
Heavy ions
Ionic collisions
Phase diagrams
Phase transitions
Quantum chromodynamics
Statistical models
Vapor phases
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Summary:We discuss medium effects on light cluster production in the QCD phase diagram by relating Mott transition lines to those for chemical freeze-out. In heavy-ion collisions at highest energies provided by the LHC, light cluster abundances should follow the statistical model because of low baryon densities. Chemical freeze-out in this domain is correlated with the QCD crossover transition. At low energies, in the nuclear fragmentation region, where the freeze-out interferes with the liquid-gas phase transition, self-energy and Pauli blocking effects are important. We demonstrate that at intermediate energies the chemical freeze-out line correlates with the maximum mass fraction of nuclear bound states, in particular \(\alpha\) particles. In this domain, the HADES, FAIR and NICA experiments can give new insights.
ISSN:2331-8422