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First measurement of the W-boson mass in run II of the tevatron

par Aaltonen, Timo;De Lentdecker, Gilles ; [et al.]
Référence Physical review letters, 99, 15, 151801
Publication Publié, 2007-10

Article révisé par les pairs

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Résumé :

We present a measurement of the W-boson mass using 200pb-1 of data collected in pp̄ collisions at s=1.96TeV by the CDF II detector at run II of the Fermilab Tevatron. With a sample of 63964 W→eν candidates and 51128 W→μν candidates, we measure MW= 80413±34stat±34syst=80413±48MeV/c2. This is the most precise single measurement of the W-boson mass to date. © 2007 The American Physical Society.