What is the brightest source for dilepton emissions at ultrarelativistic energies?

David Fein, Zheng Huang, Peter Valerio, Ina Sarcevic

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We calculate the dilepton emissions as the decay product of the charm and bottom quarks produced in heavy-ion collisions at RHIC energy. We take into account the next-to-leading-order radiative corrections in perturbative QCD to the heavy quark production from an initial hard parton-parton scattering. We find that the thermal charm decay dominates the dilepton production in the low dilepton mass region [Formula Presented] GeV), while the heavy quark production from the initial scattering takes over the intermediate and high mass regions [Formula Presented] GeV). Our result also indicates the importance of the bottom quark in the high mass region [Formula Presented] GeV) due to its large mass and cascade decay. If the initial scattering produced charm suffers a significant energy loss due to the secondary interaction, the bottom decay constitutes the major background for the thermal dileptons.

Original languageEnglish (US)
Pages (from-to)1637-1640
Number of pages4
JournalPhysical Review C - Nuclear Physics
Issue number3
StatePublished - 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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