Search for τ→eγτ→eγ decay at Belle
2005
We have searched for the lepton-flavor-violating decay τ→eγτ→eγ using a data sample of 86.7 fb−1 collected with the Belle detector at the KEKB asymmetric e+e−e+e− collider. No evidence for a signal is obtained, and we set an upper limit for the branching fraction B(τ→eγ)<3.9×10−7B(τ→eγ)<3.9×10−7 at the 90% C.L.
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