Interpretations of the NuTeV ${\sin }^2{\theta }_W$

Abstract

We summarize theoretical explanations of the three $\sigma$ discrepancy between ${\sin }^2{\theta }_W$ measured by NuTeV and predicted by the Standard Model global fit. Possible new physics explanations ({\it e.g.} an unmized $Z^{\prime }$) are not compelling. The discrepancy would be reduced by a positive momentum asymmetry $s^{-}$ in the strange sea; present experimental estimates of $s^{-}$ are unreliable or incomplete. Upgrading the NuTeV analysis to NLO would alleviate concerns that the discrepancy is a QCD effect.

(proceedings for the NuFact'02 Workshop); reference and footnote added, following the NuTeV proceedings

References in corpus (4)

• A Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering
• Old and new physics interpretations of the NuTeV anomaly
• The Z-Z' Mass Hierarchy in a Supersymmetric Model with a Secluded U(1)'-Breaking Sector
• Electroweak Limits on Non-Universal Z' Bosons

Cited by in corpus (4)

• The NuTeV Anomaly, Lepton Universality, and Non-Universal Neutrino-Gauge Couplings
• Recent Developments in Precision Electroweak Physics
• Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering
• Analytic Estimates of the QCD Corrections to Neutrino-Nucleus Scattering