Dilepton from Quark-Gluon Plasma and Quark-Hadron Phase Transition

TL;DR

This paper models dilepton production during the quark-gluon plasma phase transition, highlighting significant lepton yields at small invariant masses and minimal entropy change during hadronization.

Contribution

It introduces a temperature-dependent quark mass model and analyzes dilepton production rates at different temperatures and initial conditions.

Findings

Significant dilepton production at small invariant mass.

Weak entropy change during quark-hadron phase transition.

Dependence of production rate on temperature and quark mass.

Abstract

A model of statistical quark-gluon plasma formation is considered.We look the dilepton production at critical temperature $T_{c}\sim170 Mev $ and completely free out temperature $T=150 MeV$ with the initial temperature as $T_{0}=570,400 (250) MeV$. Now we consider that quark mass is depending on the coupling value through parameterisation factor of the fireball formation and temperature. The rate of production is shown for invariant mass $M$ at the particular value of $ E=2.0,3.0 GeV$.It shows the significant production of leptons in this process for small value of invariant mass. However, the quark-hadron phase transition is a very weakly changed in the entropy of the system during this process of hadronisation.