Particle Production within the Quark Meson Coupling Model

TL;DR

This paper applies the Quark Meson Coupling (QMC) model to calculate particle yields in heavy ion collisions, revealing a lower fireball temperature and demonstrating the model's effectiveness in hot hadronic matter scenarios.

Contribution

It introduces a novel application of the QMC model to hot hadronic matter and particle production yields in heavy ion collisions, with a specific focus on RHIC and SPS data.

Findings

QMC predicts a smaller fireball temperature of 132 MeV.

QMC successfully describes particle yields in Au+Au and Pb+Pb collisions.

Effective baryon masses are lower in QMC, influencing particle production.

Abstract

Quark meson coupling (QMC) models can be successfully applied to the description of compact star properties in nuclear astrophysics as well as to nuclear matter. In the regime of hot hadronic matter very few calculations exist using the QMC model, in particular when applied to particle yields in heavy ion collisions. In the present work, we identify the free energy of the bag with the effective mass of the baryons and we calculate the particle production yields on a Au+Au collision at RHIC with the QMC model and compare them with results obtained previously with other relativistic models. A smaller temperature for the fireball, T=132 MeV, is obtained due to the smaller effective baryon masses predicted by QMC. QMC was also applied to the description of particle yields at SPS in Pb+Pb collisions.