A search for top decay into tau, neutrino and quark in top-antitop production

Details A search for top decay into tau, neutrino and quark in top-antitop production A search for top decay into tau, neutrino and quark in top-antitop production

2005-10-24

arxiv.org/abs/hep-ex/0510063v2

Phys.Lett.B639:172-178,2006

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 1 figure, published version

Scientific paper

10.1016/j.physletb.2006.06.030

We present a search for top-antitop events with a tau lepton in the final state. The data sample corresponds to an integrated luminosity of 194/pb collected with the CDF II detector from proton-antiproton collisions at a center of mass energy of 1.96 TeV. We observe two events with an expected signal of 1.0+/-0.2 events and a background of 1.3+/-0.3 events. We determine a 95% confidence level upper limit on r_tau, the ratio of the measured rate of top->tau nu quark to the expectation, of 5.2.

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