W Boson Production and Mass at the Tevatron

TL;DR

This paper reports measurements of W boson production properties at the Tevatron, including cross sections, widths, and mass uncertainties, using data from the CDF and D0 experiments.

Contribution

It provides new precision measurements of W boson properties and tests lepton universality with data from Run 2 at the Tevatron.

Findings

Lepton universality ratios g_mu/g_e and g_tau/g_e close to 1.

W width measurements consistent with Standard Model predictions.

W mass uncertainty estimated at 76 MeV.

Abstract

The CDF and D0 collaborations have analyzed up to ~200/pb of Run 2 physics data to measure W production properties such as the W cross section, the W width, lepton universality and the W charge asymmetry. From the cross section measurements, CDF obtains a lepton universality of g_mu/g_e = 0.998+-0.012 and g_tau/g_e = 0.99+-0.04 and an indirect W width of Gamma_W = 2079+-41 MeV. D0 measured the W width directly and finds Gamma_W = 2011+-142 MeV. CDF has estimated the uncertainties on the W boson mass measurements in the electron and muon decay channels and obtains an overall uncertainty of 76 MeV.