Production and elliptic flow of dileptons and photons in a matrix model of the quark-gluon plasma.


Journal Article

We consider a nonperturbative approach to the thermal production of dileptons and photons at temperatures near the critical temperature in QCD. The suppression of colored excitations at low temperature is modeled by including a small value of the Polyakov loop, in a "semi"-quark-gluon plasma (QGP). Comparing the semi-QGP to the perturbative QGP, we find a mild enhancement of thermal dileptons. In contrast, to leading logarithmic order in weak coupling there are far fewer hard photons from the semi-QGP than the usual QGP. To illustrate the possible effects on photon and dilepton production in heavy-ion collisions, we integrate the rate with a simulation using ideal hydrodynamics. Dileptons uniformly exhibit a small flow, but the strong suppression of photons in the semi-QGP tends to weight the elliptical flow of photons to that generated in the hadronic phase.

Full Text

Duke Authors

Cited Authors

  • Gale, C; Hidaka, Y; Jeon, S; Lin, S; Paquet, J-F; Pisarski, RD; Satow, D; Skokov, VV; Vujanovic, G

Published Date

  • February 20, 2015

Published In

Volume / Issue

  • 114 / 7

Start / End Page

  • 072301 -

PubMed ID

  • 25763954

Pubmed Central ID

  • 25763954

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.114.072301


  • eng