Particle Production at CBM in a Thermal Model Approach

TL;DR

This paper uses a thermal model with an excluded volume approach to predict particle ratios and multiplicities in the CBM experiment, focusing on strange particle enhancement and baryon density at high baryon densities.

Contribution

It introduces a thermal model EOS with excluded volume effects to predict hadron production in the CBM energy range, comparing results with other theoretical models.

Findings

Predicted particle ratios and multiplicities for CBM energies

Estimated strange particle enhancement at high baryon densities

Compared results with HSD and UrQMD models

Abstract

The Compressed Baryonic Matter (CBM) experiment planned at Facility for Antiproton and Ion Research (FAIR) will provide a major scientific effort for exploring the properties of strongly interacting matter in the high baryon density regime. One of the important goal behind such experiment is to precisely determine the equation of state (EOS) for the strongly interacting matter at extreme baryon density. In this paper, we have used a thermal model EOS incorporating excluded volume description for the hot and dense hadron gas (HG). We then predict different particle ratios and the total multiplicity of various hadrons in the CBM energy range i.e. from $10$ A GeV to $40$ A GeV lab energies, which corresponds to $4.43$ A GeV and $8.71$ A GeV center-of-mass energies. Our main emphasis is to estimate the strange particles enhancement as well as increase in the net baryon density in CBM experiment. We have also compared our results with the results obtained from various other theoretical approaches existing in the literature such as hadron string dynamics (HSD) model and ultra-relativistic quantum molecular dynamics (UrQMD) etc.