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Title

Direct Bound on the Total Decay Width of the Top Quark in pp Collisions at s√=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2009, vol. 102, no. 04, p. 042001
Abstract We present the first direct experimental bound on the total decay width of the top quark, Γt, using 955  pb−1 of the Tevatron’s pp collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed top quark mass from these events is fitted to templates representing different values of the top quark width. Using a confidence interval based on likelihood-ratio ordering, we extract an upper limit at 95% C.L. of Γt<13.1  GeV for an assumed top quark mass of 175  GeV/c2.
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CDF COLLABORATION. Direct Bound on the Total Decay Width of the Top Quark in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2009, vol. 102, n° 04, p. 042001. https://archive-ouverte.unige.ch/unige:38540

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Deposited on : 2014-07-08

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