Phys. Rev. D 70, 111505(R) (2004) [4 pages]Strange quark asymmetry in the nucleon and the NuTeV anomaly
The NuTeV anomaly of a nonuniversal value of the fundamental parameter sin2θW in the electroweak theory has been interpreted as an indication for new physics beyond the standard model. However, the observed quantity depends on a possible asymmetry in the momentum distributions of strange quarks and antiquarks in the nucleon. This asymmetry occurs naturally in a phenomenologically successful physical model for such parton distributions, which reduces the NuTeV result to only about 2 standard deviations from the standard model. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.70.111505
DOI:
10.1103/PhysRevD.70.111505
PACS:
12.39.Ki, 12.15.Mm, 13.15.+g, 13.60.Hb
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