Abstract
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 language | English (US) |
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Pages (from-to) | 1637-1640 |
Number of pages | 4 |
Journal | Physical Review C - Nuclear Physics |
Volume | 56 |
Issue number | 3 |
DOIs | |
State | Published - 1997 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics