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.

Exclusion of an Exotic Top Quark with -4/3 Electric Charge Using Soft Lepton Tagging

CIOCCI, MARIA AGNESE;DONATI, SIMONE;
2010-01-01

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.
2010
T., Aaltonen; J., Adelman; B. A., Gonzalez; S., Amerio; D., Amidei; A., Anastassov; A., Annovi; J., Antos; G., Apollinari; J., Appel; A., Apresyan; T....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/828969
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