J/$\psi$ suppression in a dense baryonic medium

TL;DR

This paper analyzes $J/$ suppression in heavy-ion collisions, demonstrating a model that accurately describes existing SPS data and predicting significant suppression in future FAIR energy collisions, considering baryon-rich medium effects.

Contribution

The study introduces a model fixed by lower-energy collision data that successfully describes SPS results and predicts $J/$ suppression at higher energies, including baryon-rich medium effects.

Findings

Model fits SPS $J/$ suppression data well.

Predicts larger suppression in Au+Au collisions at FAIR energies.

Investigates effects of baryon-rich medium on $J/$ production.

Abstract

We have examined the available latest SPS data on $J/\psi$ suppression in Pb+Pb and In+In collisions at 158 A GeV. Our employed model, with parameters fixed by $p$-$p$ and $p$-nucleus collisions, gives excellent description of NA50 and NA60 data on centrality dependence of $J/\psi$ suppression. The model is then applied to predict the centrality dependence of $J/\psi$ production in Au+Au collisions at FAIR energy domain. A much larger suppression of $J/\psi$ is predicted. In addition the possible effects of a baryon rich medium on $J/\psi$ production is also investigated.