Next-to-leading order vs. quark off-shellness and intrinsic k_T in the Drell-Yan process

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dc.creatorLinnyk, O.
dc.creatorLeupold, S.
dc.creatorMosel, U.
dc.date2006-07-27
dc.date2006-11-20
dc.date.accessioned2026-07-07T11:05:20Z
dc.date.available2026-07-07T11:05:20Z
dc.descriptionWe calculate the effects of next-to-leading order perturbative QCD as well as of the quark transverse motion and off-shellness on the Drell-Yan process cross section. By studying the s->infinity behaviour of the cross section in these approaches, we find that the effects of quark off-shellness and intrinsic-k_T parametrize those of higher twists. In particular, the off-shellness of partons generates part of the K-factor type corrections to the leading order cross section. Higher twist contributions to the p_T-spectrum of the Drell-Yan pairs are found to be large for presently accessible energies. The evolution of quark off-shellness distribution with the hard scale is also studied.
dc.descriptionv2: shortened, references added, typos corrected
dc.identifierhttps://arxiv.org/abs/hep-ph/0607305
dc.identifierhttp://arxiv.org/abs/hep-ph/0607305
dc.identifierPhys.Rev.D75:014016,2007
dc.identifierdoi:10.1103/PhysRevD.75.014016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189174
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleNext-to-leading order vs. quark off-shellness and intrinsic k_T in the Drell-Yan process
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