Measurement of the W Boson Mass

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow
D0 Collaboration

Date of this Version

2009

Comments

Published in Physical Review Letters 103, 141801 (2009). Copyright © 2009 The American Physical Society. Used by permission.

Abstract

We present a measurement of the W boson mass in W → ev decays using 1 fb^-1 of data collected with the D0 detector during Run II of the Fermilab Tevatron collider. With a sample of 499830 W → ev candidate events, we measure M_W = 80.401 ± 0.043 GeV. This is the most precise measurement from a single experiment.