A Measurement of the W Boson Mass
Abstract
We report a measurement of the W boson mass based on an integrated luminosity of 82 pb-1 from collisions at s=1.8 TeV recorded in 1994--1995 by the detector at the Fermilab Tevatron. We identify W bosons by their decays to e and extract the mass by fitting the transverse mass spectrum from 28,323 W boson candidates. A sample of 3,563 dielectron events, mostly due to Z to ee decays, constrains models of W boson production and the detector. We measure =80.440.10(stat)0.07(syst)~GeV. By combining this measurement with our result from the 1992--1993 data set, we obtain =80.430.11 GeV.
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