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Kaon content of three-prong decays of the tau lepton
We present a series of measurements involving the production of charged kaons in three-prong hadronic decays of the r lepton. The data sample was obtained with the TPC/Two-Gamma detector facility at PEP. We set a limit on the branching fraction BR(r---, v_K-K°) < 0.26% at the 95% confidence level. The process r-_ v,K-K°is related via SU(3) to the second-class current decay rvflr-r/. We also present new measurements of the three-prong branching fractions BR(r-_ v,K-Tr+_r "" + neutrals) 0.70doi:10.2172/6030650 fatcat:wotvjb3zyzfbzpe2e4xhfalzae