Exclusion of an exotic top quark with -4/3 electric charge using soft lepton tagging.

نویسندگان

  • T Aaltonen
  • J Adelman
  • B Alvarez González
  • S Amerio
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چکیده

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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عنوان ژورنال:
  • Physical review letters

دوره 105 10  شماره 

صفحات  -

تاریخ انتشار 2010