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A search for t→τνq in tt¯ production
Journal article

A search for t→τνq in tt¯ production

A. Abulencia, D. Acosta, J. Adelman, T. Affolder, T. Akimoto, M.G. Albrow, D. Ambrose, S. Amerio, D. Amidei, A. Anastassov, …
Physics letters. B, Vol.639(3-4), pp.172-178
08/10/2006

Abstract

14.60.Fg 14.65.Ha
We present a search for tt¯ events with a tau lepton in the final state. The data sample corresponds to an integrated luminosity of 194 pb−1 collected with the CDF II detector from pp¯ 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 rτ, the ratio of the measured rate of t→τνq to the expectation, of 5.2.

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