The strange parton distribution of the nucleon: global analysis and applications

被引:91
作者
Lai, Hung-Liang [1 ]
Nadolsky, Pavel
Pumplin, Jonathan
Stump, Daniel
Tung, Wu-Ki
Yuan, Chien-Peng
机构
[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[2] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[3] Taipei Municipal Univ Educ, Dept Nat Sci, Taipei 100, Taiwan
[4] Argonne Natl Lab, Argonne, IL 60439 USA
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2007年 / 04期
关键词
hadronic colliders; parton model; QCD; deep inelastic scattering;
D O I
10.1088/1126-6708/2007/04/089
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The strangeness degrees of freedom in the parton structure of the nucleon are explored in the global analysis framework, using the new CTEQ6.5 implementation of the general mass perturbative QCD formalism of Collins. We systematically determine the constraining power of available hard scattering experimental data on the magnitude and shape of the strange quark and anti-quark parton distributions. We find that current data favor a distinct shape of the strange sea compared to the isoscalar non-strange sea. A new reference parton distribution set, CTEQ6.5S0, and representative sets spanning the allowed ranges of magnitude and shape of the strange distributions, are presented. Some applications to physical processes of current interest in hadron collider phenomenology are discussed.
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页数:19
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