Precision Electroweak Measurements and Constraints on the Standard Model

TL;DR

This paper analyzes precision electroweak measurements from LEP, SLC, and Tevatron to constrain Standard Model parameters, compare results, and predict outcomes for low-$Q^2$ experiments, updating key mass measurements.

Contribution

It provides updated constraints on Standard Model parameters using the latest electroweak data, especially new W-boson and top quark mass combinations.

Findings

Updated W-boson mass measurements

Refined top quark mass constraints

Predictions for low-$Q^2$ experiments

Abstract

This note presents constraints on Standard Model parameters using published and preliminary precision electroweak results measured at the electron-positron colliders LEP and SLC. The results are compared with precise electroweak measurements from other experiments, notably CDF and D{\O}at the Tevatron. Constraints on the input parameters of the Standard Model are derived from the combined set of results obtained in high-$Q^2$ interactions, and used to predict results in low-$Q^2$ experiments, such as atomic parity violation, M{\o}ller scattering, and neutrino-nucleon scattering. The main changes with respect to the experimental results presented in 2008 are new combinations of results on the W-boson mass and the mass of the top quark.