Mean Field Effect on J/\psi Production in Heavy Ion Collisions

TL;DR

This paper investigates how mean field effects in quark-gluon plasma influence J/ production in heavy ion collisions, revealing a significant enhancement at low transverse momentum due to reduced regeneration thresholds.

Contribution

It provides a perturbative calculation of mean field effects on J/ production within a transport model, highlighting their impact on low-momentum enhancement.

Findings

Global nuclear modification factor R_{AA} is insensitive to mean field effects.

Mean field effects significantly enhance J/ regeneration at low transverse momentum.

The enhancement is observed at RHIC and LHC energies.

Abstract

The mean field effect in quark-gluon plasma on J/\psi production in heavy ion collisions is perturbatively calculated in a transport approach. While the global nuclear modification factor R_{AA} is not sensitive to the mean field, the reduced threshold for J/\psi regeneration leads to a significant enhancement of R_{AA} at low transverse momentum at RHIC and LHC energies.