Search for Lepton-Flavor-Violating and Lepton-Number-Violating tau to lhh' Decay Modes
Abstract
We search for lepton-flavor-violating and lepton-number-violating tau decays into a lepton (l = electron or muon) and two charged mesons (h, h' = pion or Kaon) using 854 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain 90% confidence level upper limits on the tau to lhh' branching fractions in the range (2.0-8.4)*10-8. These results improve upon our previously published upper limits by factors of about 1.8 on average.
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