Thermal dilepton signal versus dileptons from open charm and bottom decays in heavy-ion collisions

Abstract

We analyze the opportunity to observe thermal dileptons emitted off deconfined matter resulting in heavy-ion collisions at RHIC and LHC energies. Special kinematical conditions provided by the detector systems PHENIX and ALICE, and the so-called $M_{\perp }$ scaling behavior of thermal dilepton spectra are taken into account. Our considerations include energy loss effects of the fast heavy quarks in deconfined matter, which for themselves can help to identify the creation of a hot and dense parton medium. Due to a threshold like effect for decay leptons we find a window at large transverse pair momentum and fixed transverse mass where the thermal signal can exceed the background of dileptons from correlated semileptonic decays of charm and bottom mesons.

21 LaTeX pages including 7 eps figures

References in corpus (5)

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• Propagation of Charm Quarks in Equilibrating Quark Gluon Plasma
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• Nonlinear dynamics of soft boson collective excitations in hot QCD plasma III: bremsstrahlung and energy losses
• Energy loss of quarks in deconfined matter at RHIC: photon-tagged jets, single electron and dilepton spectra from open charm
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• Physical Information in the Thermal Continuum Dilepton Spectra
• Dileptons, Charm and Bottom in Relativistic Heavy-Ion Collisions