Measurement of the W boson mass with the Collider Detector at Fermilab

This is the authors' abstract. We don't add key points for this paper.

We present a measurement of the W boson mass using data collected with the CDF detector during the 1994--1995 collider run at the Fermilab Tevatron. A fit to the transverse mass spectrum of a sample of 30115 →Weν events recorded in an integrated luminosity of 84 pb^-1 gives a mass MW=80.473±0.065(stat)±0.092(syst)GeV/c². A fit to the transverse mass spectrum of a sample of 14740 →Wμν events from 80 pb^-1 gives a mass MW=80.465±0.100(stat)±0.103(syst)GeV/c². The dominant contributions to the sys- tematic uncertainties are the uncertainties in the electron energy scale and the muon momentum scale, 0.075GeV/c² and 0.085GeV/c², respectively. The combined value for the electron and muon channel is MW=80.470±0.089GeV/c². When combined with previously published CDF measurements, we obtain MW=80.433±0.079GeV/c².