Search for lepton-flavor-violating τV0 decays at Belle

https://doi.org/10.1016/j.physletb.2008.05.012Get rights and content
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Abstract

We have searched for neutrinoless τ lepton decays into and V0, where stands for an electron or muon, and V0 for a vector meson (ϕ, ω, K0, K¯0 or ρ0), using 543 fb−1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e collider. No excess of signal events over the expected background has been observed, and we set upper limits on the branching fractions in the range (5.918)×10−8 at the 90% confidence level. These upper limits are significantly more restrictive than our previous results for the ℓϕ, K0, K¯0 and ρ0 modes.

PACS

11.30.Fs
13.35.Dx
14.60.Fg

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