W mass and width measurements at the Tevatron

Details W mass and width measurements at the Tevatron W mass and width measurements at the Tevatron

2007-05-21

arxiv.org/abs/0705.2920v1

Physics

High Energy Physics

High Energy Physics - Experiment

To appear in the proceedings of 42st Rencontres de Moriond on QCD and Hadronic interactions, La Thuile, Aosta Valley, Italy, 1

Scientific paper

I present a measurement of the W boson mass (M_W) and width (G_W) using 200
and 350 pb-1 of CDF Run II data respectively. The measurements, performed in
both the electron and muon decay channels, rely on a fit to the W transverse
mass distribution. We measure M_W = 80413 +/- 48 MeV and G_W = 2032 +/- 71 MeV
which represent the world's single most precise measurements to date.

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