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Search for neutrinoless decays tau -> lhh and tau -> lV0

Y. Yusa
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Abstract

We have searched for neutrinoless tau lepton decays into l h h or l V0, where l stands for an electron or muon, h for a charged light hadron, pi or K, and V0 for a neutral vector meson, rho, K*(892) and phi, using a 158 /fb data sample collected with the Belle detector at the KEKB e+e- collider. Since the number of events observed are consistent with the expected background, we set upper limits on the branching fractions in the range of 1.6-8.0 x 10-7 for various decay modes at the 90% confidence level.

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Y. Yusa. 2006-03-18. Search for neutrinoless decays tau -> lhh and tau -> lV0. https://doi.org/10.1016/j.physletb.2006.07.025

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