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Título: | Direct Bound on the Total Decay Width of the Top Quark in p(p)over-bar Collisions at root s=1.96 TeV |
Autor: | CDF Collaboration; Cabrera, Susana CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Aaltonen, T. | Fecha de publicación: | 30-ene-2009 | Editor: | American Physical Society | Citación: | Physical Review Letters 102 (4): 042001(2009) | Resumen: | 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). | Versión del editor: | http://dx.doi.org/ 10.1103/PhysRevLett.102.042001 | URI: | http://hdl.handle.net/10261/22113 | DOI: | 10.1103/PhysRevLett.102.042001 | ISSN: | 0031-9007 |
Aparece en las colecciones: | (IFIC) Artículos |
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