Chemical equilibration and thermal dilepton production from the quark gluon plasma at finite baryon density

TL;DR

This paper investigates how finite baryon density affects chemical equilibration and dilepton production in a quark-gluon plasma, revealing that baryon density slows equilibration, reduces cooling, and enhances dilepton yields.

Contribution

It provides new insights into the impact of baryon density on plasma evolution and dilepton production, highlighting the interplay between chemical equilibration and thermal emission.

Findings

Baryon density slows gluon chemical equilibration.

Finite baryon density reduces plasma cooling rate.

Dilepton yields are enhanced at finite baryon density.

Abstract

The chemical equilibration of a highly unsaturated quark-gluon plasma has been studied at finite baryon density. It is found that in the presence of small amount of baryon density, the chemical equilibration for gluon becomes slower and the temperature decreases less steeply as compared to the baryon free plasma. As a result, the space time integrated yield of dilepton is enhanced if the initial temperature of the plasma is held fixed. Even at a fixed initial energy density, the suppression of the dilepton yields at higher baryo-chemical potential is compensated, to a large extent, by the slow cooling of the plasma.