Exclusion of exotic top-like quarks with -4/3 electric charge using jet-charge tagging in single-lepton tt¯ events at CDF

We report on a measurement of the top-quark electric charge in tt events in which one W boson originating from the top-quark pair decays into leptons and the other into hadrons. The event sample was collected by the CDF II detector in ffiffi s p ¼ 1:96 TeV proton-antiproton collisions and correspond...

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Detalles Bibliográficos
Autores: Aaltonen, Timo Antero, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Palencia Cortezón, José Enrique, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054, Vizán García, Jesús Manuel|||0000-0002-6823-8854
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28853
Acceso en línea:https://hdl.handle.net/10902/28853
Access Level:acceso abierto
Descripción
Sumario:We report on a measurement of the top-quark electric charge in tt events in which one W boson originating from the top-quark pair decays into leptons and the other into hadrons. The event sample was collected by the CDF II detector in ffiffi s p ¼ 1:96 TeV proton-antiproton collisions and corresponds to 5:6 fb 1. We find the data to be consistent with the standard model and exclude the existence of an exotic quark with 4=3 electric charge and mass of the conventional top quark at the 99% confidence level.

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