Neutrino dimuon production and the strangeness asymmetry of the nucleon

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Title:	Neutrino dimuon production and the strangeness asymmetry of the nucleon
Authors:	F. Olness J. Pumplin D. Stump J. Huston P. Nadolsky H. L. Lai S. Kretzer J. F. Owens W. K. Tung 賴宏亮
Contributors:	臺北市立教育大學自然科學系
Date:	2005
Issue Date:	2009-07-28 16:33:49 (UTC+8)
Abstract:	We have performed the first global QCD analysis to include the CCFR and NuTeV dimuon data, which provide direct constraints on the strange and antistrange parton distributions, s(x) and . To explore the strangeness sector, we adopt a general parametrization of the non-perturbative functions satisfying basic QCD requirements. We find that the strangeness asymmetry, as represented by the momentum integral , 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.
Relation:	The European Physical Journal C - Particles and Fields, V40(2), p.145-156
Appears in Collections:	[Department of Applied Physics and Chemistry] Periodical Articles

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