Dilepton production rate near the critical temperature of color superconductivity

TL;DR

This paper studies how diquark fluctuations near the critical temperature of color superconductivity significantly enhance dilepton production rates, revealing new collective mode effects in the photon self-energy.

Contribution

It introduces the analysis of diquark collective modes' impact on dilepton production near the critical temperature, using superconductivity theory methods.

Findings

Diquark fluctuations cause a notable increase in dilepton production.

Collective modes significantly modify the photon self-energy.

Enhanced dilepton rates occur in the low invariant-mass region.

Abstract

We investigate modification of the dilepton production rate by the diquark fluctuations that form well-developed collective modes near the critical temperature of color superconductivity. Through the analysis of the photon self-energy called the Aslamasov-Larkin, Maki-Thompson and density of states terms in the theory of metalic superconductivity, it is shown that the collective mode in the diquark channel affects the photon self-energy significantly and thereby gives rise to an anomalous enhacement of the dilepton production rate in the low invariant-mass region.