Study Of Top Quark Production And Decays Involving A Tau Lepton At Cdf And Limits On A Charged Higgs Boson Contribution
PHYSICAL REVIEW D(2014)
摘要
We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9 fb(-1) of integrated luminosity at the Collider Detector at Fermilab. Dilepton events, where one lepton is an energetic electron or muon and the other a hadronically decaying tau lepton, originating from proton-antiproton collisions at root s = 1.96 TeV, are used. A top-antitop quark production cross section of 8.1 +/- 2.1 pb is measured, assuming standard-model top quark decays. By separately identifying for the first time the single-tau and the ditau components, we measure the branching fraction of
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关键词
top quark production,tau lepton,decays
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