Direct photon production from viscous QGP

Details Direct photon production from viscous QGP Direct photon production from viscous QGP

2011-01-20

arxiv.org/abs/1101.3823v1

Phys.Rev.C83:034905,2011

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 figures

Scientific paper

10.1103/PhysRevC.83.034905

We simulate direct photon production in evolution of viscous QGP medium. Photons from Compton and annihilation processes are considered. Viscous effect on photon production is very strong and reliable simulation is possible only in a limited $p_T$ range. For minimally viscous fluid $\eta/s$=0.08), direct photons can be reliably computed only up to $p_T \leq$ 1.3 GeV. With reduced viscosity ($\eta/s$=0.04), the limit increases to $p_T \leq $2GeV.

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