Search for neutrinoless decays τ → ℓ h h and τ → ℓ V0

We have searched for neutrinoless τ lepton decays into ℓhh or ℓ V0, where ℓ stands for an electron or muon, h for a charged light hadron, π or K, and V0 for a neutral vector meson, ρ0, K* (892)0 and φ{symbol}, using a 158 fb-1 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) × 10-7 for various decay modes at the 90% confidence level. © 2006 Elsevier B.V. All rights reserved.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 640, 4, 138-144
Year:
2006
ISSN:
03702693
Other identifiers:
Scopus: 2-s2.0-33747888999
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 Record created 2010-11-05, last modified 2018-01-28


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