Search for lepton-flavor and lepton-number-violating Τ→?hh' decay modes
Journal
Physics Letters B
Journal Volume
719
Journal Issue
4月5日
Pages
346-353
Date Issued
2013
Author(s)
Miyazaki, Y.
Abstract
We search for lepton-flavor and lepton-number-violating. Τ decays into a lepton (ℓ= electron or muon) and two charged mesons (h,h'=π± or K±) 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. Τ→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.
Type
journal article