Precision Electroweak Measurements: a Theorist point of view

Abstract

Present global fits to electroweak data are characterized by two results that differ from Standard Model (SM) expectations by about 3σ, the NuTeV measurement of sin 2 θW and the FB b quark asymmetries measured at LEP. I review possible SM and new physics explanations of these anomalies and the implications for the indirect determination of the Higgs mass.

Analytic estimates of the QCD corrections to neutrino-nucleus scattering

“…However, the relation between the NLO QCD corrections to R PW and those to R ν and R ν is not clear. In fact, it has been often claimed that the NLO QCD corrections to R ν and R ν are expected to be as large as 10% (see [10,14,15,16]), given that the expansion parameter of the perturbative series is typically α s /π, where α s is evaluated at a scale of about 20 GeV 2 . The NuTeV analysis takes into account a variety of corrections to the cross sections, including a partial, phenomenological description of the QCD corrections.…”