| 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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