Measurement of the W Boson Mass
The CDF Collaboration
Abstract
We present a measurement of the mass of the W boson using data collected with the CDF detector during the 1992-93 collider run at the Fermilab Tevatron. A fit to the transverse mass spectrum of a sample of 3268 W → μν events recorded in an integrated luminosity of 19.7 pb-1 gives a mass MWμ=80.3100.205~(stat.)0.130~(syst.) \ GeV/c2. A fit to the transverse mass spectrum of a sample of 5718 W → eν events recorded in 18.2 pb-1 gives a mass MWe=80.4900.145~(stat.)0.175~(syst.) \ GeV/c2. Combining the electron and muon results, accounting for correlated uncertainties, yields a mass MW=80.4100.180 \ GeV/c2.
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