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Combination of CDF and D0 results on the W boson mass and width (2004)

Abstract
The results based on 1992–95 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average MW = 80.456±0.059 GeV. We also report the Tevatron collider average of the directly measured W boson width GammaW = 2.115±0.105 GeV. We describe a new joint analysis of the direct W mass and width measurements. Assuming the validity of the standard model, we combine the directly measured W boson width with the width extracted from the ratio of W and Z boson leptonic partial cross sections. This combined result for the Tevatron is GammaW = 2.135±0.050 GeV. Finally, we use the measurements of the direct total W width and the leptonic branching ratio to extract the leptonic partial width Gamma(W-->enu) = 224±13 MeV.

Publication details
Download http://hal.in2p3.fr/in2p3-00023379/en/
Publisher HAL - CCSd - CNRS
Contributors Claudine Tur
Repository CCSd/HAL : e-articles server (based on gBUS) (France)
Keywords Physics/High Energy Physics - Experiment
Type ARTJOURNAL