Direct Measurement of the W Boson Width in pp Collisions at {radical}(s)=1.96 TeV
Journal Article
·
· Physical Review Letters
- Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
A direct measurement of the total decay width of the W boson {gamma}{sub W} is presented using 350 pb{sup -1} of data from pp collisions at {radical}(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 e{nu} and {mu}{nu} in the transverse-mass region 50<M{sub T}<90 GeV and then fitting the predicted shape to 6055 events in the high-M{sub T} region, 90<M{sub T}<200 GeV. The result is {gamma}{sub W}=2032{+-}45{sub stat}{+-}57{sub syst} MeV, consistent with the standard model expectation.
- OSTI ID:
- 21024782
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 7 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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