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

Abstract: 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.

Authorship: Aaltonen T., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bedeschi F., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Bland K.R., Blumenfeld B., Bocci A., Bodek A., Boisvert V.

Fuente: Physical Review D Vol. 88, Num. 3 (2013) 032003

Publisher: American Physical Society

Year of publication: 2013

No. of pages: 13

Publication type: Article

DOI: 10.1103/PhysRevD.88.032003

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Publication Url: https://doi.org/10.1103/PhysRevD.88.032003

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