High Momentum Dilepton Production from Jets in a Quark Gluon Plasma

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%.

arXiv comment20 pages, 12 figures, discussions added

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Cited by in corpus (30)

• Thermal Dileptons at LHC
• Heavy-Quark Kinetics in the QGP at LHC
• Heavy Ion Collisions at the LHC - Last Call for Predictions
• Elliptic flow of thermal photons in relativistic nuclear collisions
• Pre-equilibrium dilepton production from an anisotropic quark-gluon plasma
• Electromagnetic radiation from nuclear collisions at RHIC energies
• Elliptic flow of thermal dileptons in relativistic nuclear collisions
• Measuring Quark-Gluon-Plasma Thermalization Time with Dileptons
• Probing Nuclear Matter with Jet Conversions
• Dilepton production and elliptic flow from an anisotropic quark-gluon plasma
• Direct photons from relativistic heavy-ion collisions
• Low-mass lepton pair production at large transverse momentum
• Hard dilepton production from a weakly magnetized hot QCD medium
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• High momentum lepton pairs from jet-plasma interactions
• High-P_T Physics with Identified Particles
• Intermediate mass dileptons in relativistic nuclear collisions
• Hard Probes at LHC
• Jet-Tagged Back-Scattering Photons For Quark Gluon Plasma Tomography
• High Momentum Probes of Nuclear Matter
• Quark and Gluon Degrees of Freedom in High-Energy Heavy Ion Collisions
• Photon production in Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV
• Jet-Tagged Back-Scattering Photons For Quark Gluon Plasma Tomography