We present a measurement of the electric charge of the top quark using p (p) over bar collisions corresponding to an integrated luminosity of 2: 7 fb(-1) at the CDF II detector. We reconstruct t (t) over bar events in the lepton + jets final state. We use soft lepton taggers to determine the flavor of the b jets, which we use to reconstruct the top quark's electric charge and exclude an exotic top quark with -4/3 charge at 95% confidence level. This is the strongest exclusion of the exotic charge scenario and the first to use soft leptons for this purpose. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012
Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11695/4250
Digital Object Identifier (DOI): | 10.1103/PhysRevLett.105.101801 |
Codice identificativo ISI: | WOS:000281406900003 |
Codice identificativo Scopus: | 2-s2.0-77956272918 |
Handle: | http://hdl.handle.net/11695/4250 |
Abstract: | We present a measurement of the electric charge of the top quark using p (p) over bar collisions corresponding to an integrated luminosity of 2: 7 fb(-1) at the CDF II detector. We reconstruct t (t) over bar events in the lepton + jets final state. We use soft lepton taggers to determine the flavor of the b jets, which we use to reconstruct the top quark's electric charge and exclude an exotic top quark with -4/3 charge at 95% confidence level. This is the strongest exclusion of the exotic charge scenario and the first to use soft leptons for this purpose. RI Ruiz, Alberto/E-4473-2011; Robson, Aidan/G-1087-2011; De Cecco, Sandro/B-1016-2012; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012 |
Titolo: | Exclusion of an Exotic Top Quark with-4/3 Electric Charge Using Soft Lepton Tagging |
Autori: | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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