Global NLO Analysis of Nuclear Parton Distribution Functions

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dc.creatorHirai, M.
dc.creatorKumano, S.
dc.creatorNagai, T. -H.
dc.date2007-11-16
dc.date.accessioned2026-07-07T11:13:14Z
dc.date.available2026-07-07T11:13:14Z
dc.descriptionNuclear parton distribution functions (NPDFs) are determined by a global analysis of experimental measurements on structure-function ratios F_2^A/F_2^{A'} and Drell-Yan cross section ratios σ_{DY}^A/σ_{DY}^{A'}, and their uncertainties are estimated by the Hessian method. The NPDFs are obtained in both leading order (LO) and next-to-leading order (NLO) of α_s. As a result, valence-quark distributions are relatively well determined, whereas antiquark distributions at x>0.2 and gluon distributions in the whole x region have large uncertainties. The NLO uncertainties are slightly smaller than the LO ones; however, such a NLO improvement is not as significant as the nucleonic case.
dc.description3 pages, LaTeX, 4 eps files, to be published in the AIP proceedings of the 9th International Workshop on Neutrino Factories, Superbeams and Betabeams (NuFact07), Okayama, Japan, August 6 - 11, 2007. A code for calculating our nuclear parton distribution functions and their uncertainties can be obtained from http://research.kek.jp/people/kumanos/nuclp.html
dc.identifierhttps://arxiv.org/abs/0711.2557
dc.identifierhttp://arxiv.org/abs/0711.2557
dc.identifierAIPConf.Proc.981:265-267,2008
dc.identifierdoi:10.1063/1.2898955
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191648
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleGlobal NLO Analysis of Nuclear Parton Distribution Functions
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