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Title

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

CollaborationWith : Clark, Allan Geoffrey / Hamilton, Andrew / Lefevre, Régis / Sfyrla, Anna / Shreyber, Irina / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2008, vol. 100, no. 07, p. 071801
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<MT<90  GeV and then fitting the predicted shape to 6055 events in the high-MT region, 90<MT<200  GeV. The result is ΓW=2032±45stat±57syst  MeV, consistent with the standard model expectation.
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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. https://archive-ouverte.unige.ch/unige:38491

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Deposited on : 2014-07-07

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