Search for Lepton Flavor Violation in the Decayτ±→μ±γ

2005/02/28 by B. Aubert, R. Barate, The BABAR Collaboration +98 · 15 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1103/physrevlett.95.041802

published as Phys.Rev.Lett.95:041802,2005 · 7 pages, 2 encapsulated postscript figures, submitted to PRL

arxiv created 2005/06/05 · openalex publication_date 2005/07/19 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

A search for the nonconservation of lepton flavor number in the decay \ensuremathτ^\ifmmode±\else\textpm\fi\ensuremath→\ensuremathμ^\ifmmode±\else\textpm\fi\ensuremathγ has been performed using 2.07\ifmmode×\else\texttimes\fi10⁸ e⁺e^\ensuremath-\ensuremath→\ensuremathτ⁺\ensuremathτ^\ensuremath- events produced at a center-of-mass energy near 10.58 GeV with the BABAR detector at the PEP-II storage ring. We find no evidence for a signal and set an upper limit on the branching ratio of B(\ensuremathτ^\ifmmode±\else\textpm\fi\ensuremath→\ensuremathμ^\ifmmode±\else\textpm\fi\ensuremathγ)<6.8\ifmmode×\else\texttimes\fi10^\ensuremath-8 at 90% confidence level.

Citations

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
• Presentation of search results: theCLstechnique

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