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arXiv · hep-ex/0310029

An Upper Bound on the Decay tau -> mu gamma from Belle

K. Abe
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Abstract

We have performed a search for the lepton-flavor-violating decay tau -> mu gamma using a data sample of 86.3fb^{-1} accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau -> mu gamma) < 3.1 x 10^{-7} at the 90% confidence level.

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K. Abe. 2004-05-01. An Upper Bound on the Decay tau -> mu gamma from Belle. https://doi.org/10.1103/physrevlett.92.171802

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