Finding the Charge of the top quark in the Dilepton Channel

Details Finding the Charge of the top quark in the Dilepton Channel Finding the Charge of the top quark in the Dilepton Channel

2007-07-09

arxiv.org/abs/0707.1339v1

Physics

High Energy Physics

High Energy Physics - Experiment

Presented at Symposium on Hadron Collider Physics 2006 (HCP 2006), Durham, North Carolina, 22-26 May 2006

Scientific paper

There is a question about the identity of the top quark. Is it the top quark of the Standard Model (SM) with electric charge 2/3 or is it an exotic quark with charge -4/3? An exotic quark has been proposed by D. Chang et al.\cite{hep-ph/9810531, hep-ph/9805273}. This analysis will use the standard CDF run II dilepton sample. The key ingredients of this analysis are the correct pairing of the lepton and b-jet, the determination of the charge of the b-jet. The analysis proceeds by using a binomial distribution and is formulated so that rejecting one hypothesis means support for the other hypothesis.

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