Title

Effect of asymmetric strange seas and isospin-violating parton distribution functions on sin2θw measured in the NuTeV experiment

Document Type

Article

Publication Date

6-1-2002

Abstract

The NuTeV Collaboration recently reported a value of sin2θW measured in neutrino-nucleon scattering that is 3 standard deviations above the standard model prediction. This result is derived assuming that (1) the strange sea is quark-antiquark symmetric, s(x) = s̄(x), and (2) up and down quark distributions are symmetric under the simultaneous interchange of u↔d and p↔n. We report the impact of violations of these symmetries on sin2θW and discuss the theoretical and experimental constraints on such asymmetries.

Publication Source (Journal or Book title)

Physical Review D - Particles, Fields, Gravitation and Cosmology

First Page

1111031

Last Page

1111034

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