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Direct Measurement of the W Boson Width in pp Collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 100, no. 07, 071801
Publication date2008
Abstract

A direct measurement of the total decay width of the W boson ΓW is presented using 350  pb−1 of data from pp¯ collisions at s√=1.96  TeV collected with the CDF II detector at the Fermilab Tevatron. The width is determined by normalizing predicted signal and background distributions to 230 185 W candidates decaying to eν and μν in the transverse-mass region 50<90  GeV and then fitting the predicted shape to 6055 events in the high-MT region, 90<200  GeV. The result is ΓW=2032±45stat±57syst  MeV, consistent with the standard model expectation.

Citation (ISO format)
CDF Collaboration. Direct Measurement of the W Boson Width in pp Collisions at s√=1.96  TeV. In: Physical review letters, 2008, vol. 100, n° 07, p. 071801. doi: 10.1103/PhysRevLett.100.071801
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Journal ISSN0031-9007
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