Enhanced thermal production of hard dileptons by 3→2 processes | Zendy

P. Aurenche | Zendy; François Gelis | Zendy; Haitham Zaraket | Zendy

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Enhanced thermal production of hard dileptons by 3→2 processes

Author(s) -

P. Aurenche,

François Gelis,

Haitham Zaraket

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/07/063

Subject(s) - physics , particle physics , production (economics) , thermal , nuclear physics , thermodynamics , economics , macroeconomics

In the framework of the Hard Thermal Loop effective theory, we calculate thetwo-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. Wealso recover the known fact that perturbation theory leads to integrablesingularities at the location of the threshold for $q\bar{q}\to\gamma^*$. Itappears that the process calculated here significantly enhances the rate of lowmass hard dileptons.Comment: 32 latex pages, 14 postscript figure

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