Energetic di-leptons from the Quark Gluon Plasma

Details Energetic di-leptons from the Quark Gluon Plasma Energetic di-leptons from the Quark Gluon Plasma

2007-11-26

arxiv.org/abs/0711.3943v1

Phys.Rev.D77:045035,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 10 figures

Scientific paper

10.1103/PhysRevD.77.045035

In this paper we study the production of energetic di-leptons. We calculate the rate for 2 $\to$ 2 processes. The log term is obtained analytically and the constant term is calculated numerically. When the photon mass is of the order of the thermal quark mass, the result is insensitive to the photon mass and the soft logarithmic divergence is regulated by the thermal quark mass, exactly as in the case of real photons. We also consider the production of thermal Drell-Yan dileptons (thermal quark and antiquark pairs produced by virtual photons) and calculate the rate systematically in the context of the hard thermal loop effective theory. We obtain analytic and numerical results. We compare our results with those of previous calculations.

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