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 s√=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.

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. (2013). 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, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88, 032003-1-032003-13 [10.1103/PhysRevD.88.032003].

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

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2013

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 s√=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.
2013
T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. (2013). 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, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88, 032003-1-032003-13 [10.1103/PhysRevD.88.032003].
T. Aaltonen;S. Amerio;D. Amidei;A. Anastassov;A. Annovi;J. Antos;G. Apollinari;J. A. Appel;T. Arisawa;A. Artikov;J. Asaadi;W. Ashmanskas;B. Auerbach;A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/229724
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