Neutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon

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dc.creatorOlness, F.
dc.creatorPumplin, J.
dc.creatorStump, D.
dc.creatorHuston, J.
dc.creatorNadolsky, P.
dc.creatorLai, H. L.
dc.creatorKretzer, S.
dc.creatorOwens, J. F.
dc.creatorTung, W. K.
dc.date2003-12-22
dc.date2004-11-24
dc.date.accessioned2026-07-07T11:58:25Z
dc.date.available2026-07-07T11:58:25Z
dc.descriptionWe have performed the first global QCD analysis to include the CCFR and NuTeV dimuon data, which provide direct constraints on the strange and anti-strange parton distributions, $s(x)$ and $\bar{s}(x)$. To explore the strangeness sector, we adopt a general parametrization of the non-perturbative $s(x), \bar{s}(x)$ functions satisfying basic QCD requirements. We find that the strangeness asymmetry, as represented by the momentum integral $[S^{-}]\equiv \int_0^1 x [s(x)-\bar{s}(x)] dx$, is sensitive to the dimuon data provided the theoretical QCD constraints are enforced. We use the Lagrange Multiplier method to probe the quality of the global fit as a function of $[S^-]$ and find $-0.001 < [S^-] < 0.004$. Representative parton distribution sets spanning this range are given. Comparisons with previous work are made.
dc.description23 pages, 4 figures; expanded version for publication
dc.identifierhttps://arxiv.org/abs/hep-ph/0312323
dc.identifierhttp://arxiv.org/abs/hep-ph/0312323
dc.identifierEur.Phys.J.C40:145-156,2005
dc.identifierdoi:10.1140/epjc/s2004-02099-4
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206216
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNeutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon
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