Search for lepton-flavor-violating τ decays into three leptons with 719 million produced τ+ τ- pairs

We present a search for lepton-flavor-violating τ decays into three leptons (electrons or muons) using 782 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for these decays is observed and we set 90% confidence level upper limits on the branching fractions between 1.5 × 10- 8 and 2.7 × 10- 8. © 2010 Elsevier B.V.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 687, 2-3, 139-143
Year:
2010
ISSN:
03702693
Keywords:
Other identifiers:
Scopus: 2-s2.0-77949915854
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 Record created 2010-11-05, last modified 2018-01-28


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