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arXiv · hep-ph/0601042

High Momentum Dilepton Production from Jets in a Quark Gluon Plasma

Simon Turbide·Charles Gale·Dinesh K. Srivastava·Rainer J. Fries
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Abstract

We discuss the emission of high momentum lepton pairs in central Au+Au collisions at RHIC ($\sqrt{s_{NN}}=$200 GeV) and Pb+Pb collisions at the LHC ($\sqrt{s_{NN}}=$5500 GeV). Yields of dileptons produced through interactions of jets with thermal partons have been calculated, with next-to-leading order corrections through hard thermal loops (HTL) resummation. They are compared to thermal dilepton emission and the Drell-Yan process. A complete leading order treatment of jet energy loss has been included. Jet-plasma interactions are found to dominate over thermal dilepton emission for all values of the invariant mass $M$. Drell-Yan is the dominant source of high momentum lepton pairs for $M >$ 3 GeV at RHIC, after the background from heavy quark decays is subtracted. At LHC, the range $M<7$ GeV is dominated by jet-plasma interactions. Effects from jet energy loss on jet-plasma interactions turn out to be weak, but non-negligible, reducing the yield of low-mass dileptons by about 30%.

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Simon Turbide, Charles Gale, Dinesh K. Srivastava, Rainer J. Fries. 2006-04-26. High Momentum Dilepton Production from Jets in a Quark Gluon Plasma. https://doi.org/10.1103/physrevc.74.014903

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