Branching Fractions of tau Leptons Decays to Three Charged Hadrons

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  • 20 February 2003
Abstract
From electron-positron collision data collected with the CLEO detector operating at CESR near \sqrt{s}=10.6 GeV, improved measurements of the branching fractions for \tau decays into three explicitly identified hadrons and a neutrino are presented as {\cal B}(\tau^-\to \pi^-\pi^+\pi^-\nu_\tau)=(9.05\pm0.05\pm0.45)%, {\cal B}(\tau^-\to K^-\pi^+\pi^-\nu_\tau)=(3.79\pm0.14\pm0.38)\times10^{-3}, {\cal B}(\tau^-\to K^-K^+\pi^-\nu_\tau)=(1.54\pm0.06\pm0.09)\times10^{-3}, and {\cal B}(\tau^-\to K^-K^+K^-\nu_\tau)<3.7\times10^{-5} at 90% C.L., where the uncertainties are statistical and systematic, respectively.

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