Production and Elliptic Flow of Dileptons and Photons in the semi-Quark Gluon Plasma

Understand

We consider the thermal production of dileptons and photons at temperatures above the critical temperature in QCD.

• We use a model where color excitations are suppressed by a small value of the Polyakov loop, the 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.