Abstract
We present an update of the search for the lepton family number violating decay τ→μγ using 12.6 million τ+τ− pairs collected with the CLEO detector. No evidence of a signal has been found and the corresponding upper limit is B(τ→μγ)<1.1×10−6 at 90% C.L., significantly smaller than previous experimental limits.Received 25 October 1999DOI:https://doi.org/10.1103/PhysRevD.61.071101©2000 American Physical Society
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