Exclusion of exotic top-like quarks with -4/3 electric charge using jet-charge tagging in single-lepton t[¯ over t] events at CDF
Author(s)Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
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We report on a measurement of the top-quark electric charge in tt̅ 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 √s=1.96 TeV proton-antiproton collisions and corresponds to 5.6 fb[superscript -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.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Physical Review D
American Physical Society
Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Exclusion of exotic top-like quarks with -4/3 electric charge using jet-charge tagging in single-lepton tt[over ¯] events at CDF.” Physical Review D 88, no. 3 (August 2013). © 2013 American Physical Society
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