How To Find Charm in Nuclear Collisions at RHIC and LHC

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dc.creatorGavin, S.
dc.creatorMcGaughey, P. L.
dc.creatorRuuskanen, P. V.
dc.creatorVogt, R.
dc.date1996-04-19
dc.date.accessioned2026-07-07T12:03:17Z
dc.date.available2026-07-07T12:03:17Z
dc.descriptionMeasurements of dilepton production from charm decay and Drell-Yan processes respectively probe the gluon and sea quark distributions in hadronic collisions. In nucleus-nucleus collisions, these hard scattering processes constitute a `background' to thermal contributions from the hot matter produced by the collision. To determine the magnitude and behavior of this background, we calculate the hard scattering contribution to dilepton production in nuclear collisions at RHIC and LHC at next to leading order in perturbative QCD. Invariant mass, rapidity and transverse momentum distributions are presented. We compare these results to optimistic hydrodynamic estimates of the thermal dilepton production. We find that charm production from hard scattering is by far the dominant contribution. Experiments therefore can measure the gluon distribution in the nuclear target and projectile and, consequently, can provide new information on gluon shadowing. We then illustrate how experimental cuts on the rapidity gap between the leptons can aid in reducing the charm background, thereby enhancing thermal information.
dc.description32 pages, latex, 19 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/9604369
dc.identifierhttp://arxiv.org/abs/hep-ph/9604369
dc.identifierPhys.Rev.C54:2606-2623,1996
dc.identifierdoi:10.1103/PhysRevC.54.2606
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207731
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHow To Find Charm in Nuclear Collisions at RHIC and LHC
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