Scientific article
Open access

Direct Measurement of the W Boson Width in pp Collisions at √s=1.8TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 85, no. 16, p. 3347--3352
Publication date2000

This Letter describes a direct measurement of the W boson total decay width, ΓW, using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90pb−1, collected during the 1994–1995 run of the Fermilab Tevatron pp¯ collider. The width is determined by normalizing predicted signal and background distributions to 49 844 W→eν candidates and 21 806 W→μν candidates in the transverse-mass region MT<200 GeV and then fitting the predicted shape to the 438 electron events and 196 muon events in the high- MT region, 100<200 GeV. The result is ΓW=2.04±0.11(stat)±0.09(syst)GeV.

Citation (ISO format)
CDF Collaboration. Direct Measurement of the W Boson Width in <em>pp</em> Collisions at √s=1.8TeV. In: Physical review letters, 2000, vol. 85, n° 16, p. 3347––3352. doi: 10.1103/PhysRevLett.85.3347
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Article (Published version)
ISSN of the journal0031-9007

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