Precise Determination of Electroweak Parameters in Neutrino-Nucleon Scattering

The NuTeV Collaboration has extracted the electroweak parameter <sin></sin>²θ_W from the measurement of the ratios of neutral current to charged current ν and νbar cross sections. Our value, <sin></sin>²θ^(on-shell)_W = 0.2277+/-0.0013(stat)+/-0.0009(syst), is 3 standard deviations above the standard model prediction. We also present a model independent analysis of the same data in terms of neutral-current quark couplings.