Hadron production in hot and dense nuclear matter

TL;DR

This paper investigates hadron production in hot, dense nuclear matter using an effective relativistic mean-field model that includes baryons, Delta-isobars, and mesons, analyzing particle ratios and strangeness under conservation laws.

Contribution

It introduces a comprehensive model incorporating full baryon octet, Delta-isobars, and mesons with self-consistent interactions, extending previous studies of hadron production in nuclear matter.

Findings

Particle-antiparticle ratios vary with temperature and density.

Strangeness production depends on conservation constraints.

Model predicts specific behaviors of hadron yields in dense matter.

Abstract

We study the hadron production at finite values of temperature and baryon density by means of an effective relativistic mean-field model with the inclusion of the full octet of baryons, the Delta-isobar degrees of freedom and the lightest pseudoscalar and vector mesons. These last particles are considered in the so-called one-body contribution, taking into account of an effective chemical potential and mass depending on the self-consistent interaction between baryons. The analysis is performed by requiring the Gibbs conditions on the global conservation of baryon number, electric charge fraction and zero net strangeness. In this context, we study the behavior of different particle-antiparticle ratios and strangeness production.