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Title

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

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in Physical Review Letters. 2010, vol. 105, p. 7p.
Abstract We present a measurement of the electric charge of the top quark using pp¯ collisions corresponding to an integrated luminosity of 2.7  fb−1 at the CDF II detector. We reconstruct tt¯ 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.
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CDF COLLABORATION. Exclusion of an Exotic Top Quark with −4/3 Electric Charge Using Soft Lepton Tagging. In: Physical Review Letters, 2010, vol. 105, p. 7p. https://archive-ouverte.unige.ch/unige:38722

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Deposited on : 2014-07-16

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