We have searched for the lepton-flavor-violating decay τ→eγ using a data sample of 86.7 fb-1 collected with the Belle detector at the KEKB asymmetric e+e- collider. No evidence for a signal is obtained, and we set an upper limit for the branching fraction B(τ→eγ)<3.9×10-7 at the 90% C.L.
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - 2005 Apr 28|
- Decays of taus
- Lepton number
ASJC Scopus subject areas
- Nuclear and High Energy Physics