Chiral symmetry breaking and confinement effects on dilepton and photon production around $T_c$

TL;DR

This paper investigates how confinement and chiral symmetry breaking near the transition temperature affect dilepton and photon production rates from the quark-gluon plasma, revealing suppression effects and potential insights into the chiral transition.

Contribution

It introduces a calculation of dilepton and photon production rates near $T_c$ that incorporates confinement and chiral symmetry breaking effects, providing new insights into their impact.

Findings

Large momentum dilepton and photon production rates are suppressed near $T_c$ due to chiral symmetry breaking.

The study discusses how features of the chiral transition influence electromagnetic emission signals.

Chiral symmetry breaking effects are significant in understanding electromagnetic probes of the QGP.

Abstract

Production rates of dileptons and photons from the quark-gluon (QGP) phase are calculated taking into account effects of confinement and spontaneous chiral symmetry breaking (\chi SB) not far from the transition temperature $T_c$. We find that the production rates of dileptons with large momenta and of photons originating from the QGP around $T_c$ are suppressed by the \chi SB effect. We also discuss to what extent information about details of the chiral transition, such as its characteristic temperature range and the steepness of the crossover, are reflected in these quantities.