Enhanced thermal production of hard dileptons by $3\to 2$ processes

Details Enhanced thermal production of hard dileptons by $3\to 2$ processes Enhanced thermal production of hard dileptons by $3\to 2$ processes

2002-04-12

arxiv.org/abs/hep-ph/0204145v1

JHEP 0207 (2002) 063

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 latex pages, 14 postscript figures

Scientific paper

10.1088/1126-6708/2002/07/063

In the framework of the Hard Thermal Loop effective theory, we calculate the two-loop contributions to hard lepton pair production in a quark-gluon plasma. We show that the result is free of any infrared and collinear singularity. We also recover the known fact that perturbation theory leads to integrable singularities at the location of the threshold for $q\bar{q}\to\gamma^*$. It appears that the process calculated here significantly enhances the rate of low mass hard dileptons.

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