Measurements of the W Boson Mass and Trilinear Gauge Boson Couplings at the Tevatron

Abstract

We present measurements of the W boson mass at the Tevatron based on $W \to μν$ events collected by CDF and $W \to e ν$ events observed by D0 in Run Ib (1994--95). The W boson mass measured in the preliminary CDF analysis is 80.43 \pm 0.10 (stat) \pm 0.12 (syst) GeV/c^2. The D0 measured value is 80.44 \pm 0.10 (stat) \pm 0.07 (syst) GeV/c^2. We also describe measurements of the trilinear gauge boson couplings. The limits obtained on the WWγand WWZ anomalous couplings from a combined D0 analysis using $Wγ$, $WW \to \ell ν\ell^\prime ν^\prime$, and $WW/WZ \to e νjj$ production are: -0.30 < Δκ< 0.43, -0.20 < λ< 0.20, and -0.52 < Δg^Z_1 < 0.78, for a dipole form factor scale of 2 TeV. Improved limits have been obtained by combining these results with the limits derived from the LEP experiments.