Search for neutrinoless decays τ→3ℓ

We have searched for neutrinoless τ lepton decays into three charged leptons using an 87.1fb-1 data sample collected with the Belle detector at the KEKB e+e- collider. Since the number of signal candidate events is compatible with that expected from the background, we set 90% confidence level upper limits on the branching fractions in the range (1.9-3.5)×10-7 for various decay modes τ -→ℓ-ℓ+ℓ- where ℓ represents e or μ. © 2004 Published by Elsevier B.V.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 589, 3-4, 103-110
Year:
2004
ISSN:
03702693
Other identifiers:
Scopus: 2-s2.0-2442447414
Laboratories:




 Record created 2010-11-05, last modified 2018-01-28


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