A Measurement of the W Boson Mass Using Electrons at Large Rapidities

Details A Measurement of the W Boson Mass Using Electrons at Large Rapidities A Measurement of the W Boson Mass Using Electrons at Large Rapidities

1999-09-15

arxiv.org/abs/hep-ex/9909030v2

Phys.Rev.Lett.84:222-227,2000

Physics

High Energy Physics

High Energy Physics - Experiment

published in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.84.222

We report a measurement of the W boson mass based on an integrated luminosity of 82/pb from p-pbar collisions at sqrt(s) = 1.8 TeV recorded in 1994-1995 by the D0 detector at the Fermilab Tevatron. We identify W bosons by their decays to e-nu, where the electron is detected in the forward calorimeters. We extract the mass by fitting the transverse mass and the electron and neutrino transverse momentum spectra of 11,089 W boson candidates. We measure Mw = 80.691 +- 0.227 GeV. By combining this measurement with our previously published central calorimeter results from data taken in 1992-1993 and 1994-1995, we obtain Mw = 80.482 +- 0.091 GeV.

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