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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/22113
Title: Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV
Authors: CDF Collaboration; Cabrera, Susana; Cuenca Almenar, Cristóbal; Álvarez González, B.; Casal, Bruno; Cuevas, Javier; Gómez, G.; Rodrigo, Teresa; Ruiz, Alberto; Scodellaro, Luca; Vila, Iván; Vilar, Rocío; Aaltonen, T.
Issue Date: 30-Jan-2009
Publisher: American Physical Society
Citation: Physical Review Letters 102 (4): 042001(2009)
Abstract: We present the first direct experimental bound on the total decay width of the top quark, Gamma(t), using 955 pb(-1) of the Tevatron's p (p) over bar 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 Gamma(t) < 13.1 GeV for an assumed top quark mass of 175 GeV/c(2).
Publisher version (URL): http://dx.doi.org/ 10.1103/PhysRevLett.102.042001
URI: http://hdl.handle.net/10261/22113
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.102.042001
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