Location of Repository

Upper limits on the branching ratios $\tau\rightarrow \mu\gamma$ and $\tau\rightarrow$ e$\gamma$

Abstract

The DELPHI collaboration has searched for lepton flavour violating decays \tau \rightarrow \mu \gamma and \tau \rightarrow e \gamma using a data sample of about 70~pb^{-1} of integrated luminosity corresponding to 81 000 produced \tau^+ \tau^- events. No candidates were found for either of the two modes. This yields branching ratio upper limits of \rm{B}( \tau \rightarrow e \gamma ) 1.1 \times 10^{-4} and \rm{B} ( \tau \rightarrow \mu \gamma) 6.2 \times 10^{-5} at 90\% confidence level

Topics: [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]
Publisher: Elsevier
Year: 1995
OAI identifier: oai:HAL:in2p3-00007639v1
Provided by: Hal-Diderot