Constraints for the nuclear sea quark distributions from the Drell-Yan process at the SPS

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dc.creatorEskola, K. J.
dc.creatorKolhinen, V. J.
dc.creatorSalgado, C. A.
dc.creatorThews, R. L.
dc.date2000-09-21
dc.date.accessioned2026-07-07T12:26:03Z
dc.date.available2026-07-07T12:26:03Z
dc.descriptionNuclear modifications to the Drell-Yan dilepton production cross sections in p+A and A+A collisions in the leading twist approximation are caused by nuclear effects in the parton distributions of bound nucleons. For non-isoscalar nuclei, isospin corrections must also be considered. We calculate these effects for p+A and Pb+Pb collisions at CERN SPS energies. Our goal is to place constraints on nuclear effects in sea quark distributions in the region x > 0.2. We show that the net nuclear corrections remain small for p+A collisions at E_lab=450 GeV. However, in Pb+Pb collisions at E_lab=158 AGeV, effects of > 20% are predicted at large M. The data collected by the NA50 collaboration could thus be used to constrain the nuclear effects in the sea quark distributions in the region of the EMC effect, x > 0.3.
dc.description16 pages, 5 eps-figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0009251
dc.identifierhttp://arxiv.org/abs/hep-ph/0009251
dc.identifierEur.Phys.J.C21:613-620,2001
dc.identifierdoi:10.1007/s100520100771
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214762
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleConstraints for the nuclear sea quark distributions from the Drell-Yan process at the SPS
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