paper

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

arXiv:2408.01399 · doi:10.1016/j.physletb.2024.139206

Abstract

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 particles. In this domain, the HADES, FAIR and NICA experiments can give new insights.

arXiv comment21 pages, 3 figures, minor revisions in the text and figures 2, 3, references added

References in corpus (43)

Cited by in corpus (4)