Abstract
We present a measurement of the W boson mass in W→eν 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→eν candidate events, we measure MW=80.401±0.043 GeV. This is the most precise measurement from a single experiment.Received 7 August 2009DOI:https://doi.org/10.1103/PhysRevLett.103.141801©2009 American Physical Society
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