High momentum lepton pairs from jet-plasma interactions
Abstract
We discuss the emission of high momentum lepton pairs (pT>4 GeV) with low invariant masses (M << pT) in central Au+Au collisions at RHIC (sNN=200 GeV). The spectra of dileptons produced through interactions of quark and antiquark jets with the quark-gluon plasma (QGP) have been calculated. Annihilation and Compton scattering processes, as well as processes benefitting from collinear enhancement, including Landau-Pomeranchuk-Migdal (LPM) effects, are calculated and convolved with a one dimensional hydrodynamic expansion. The jet-induced contributions are compared to thermal dilepton emission and Drell-Yan processes, and are found to dominate around pT=4 GeV.
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