Search for neutrinoless $τ$ decays: $τ \to e γ$ and $τ \to μ γ$

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1 April 1997

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 55 (7) , R3919-R3923
https://doi.org/10.1103/physrevd.55.r3919

Abstract

A search for the lepton-family-number-violating decays

τ \to e γ

and

τ \to μ γ

has been performed using CLEO II data. No evidence of a signal has been found and the corresponding upper limits are

B (τ \to e γ) < 2.7 \times 10^{- 6}

and

B (τ \to μ γ) < 3.0 \times 10^{- 6}

at 90% C.L.

Keywords

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