BABAR Publications

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PUB-09/026 Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma
Doc Type Journal Papers
Record Created July 10, 2009
SLAC-PUB
SLAC-PUB-13753  No citations
Preprint # 0908.2381 [hep-ex]
Accession Code LH12292
Abstract 
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Searches for lepton-flavor-violating decay of a tau lepton to a lighter mass lepton and a photon
have been performed with the entire dataset of (963 +- 7) x 10^6 tau decays 
collected by the BaBar detector near the Upsilon(4S), Upsilon(3S) and Upsilon(2S) resonances.
The searches yield no evidence of signals and we set upper limits on the branching fractions of
BR(tau -> e gamma) < 3.3 x 10^-8 and BR(tau -> mu gamma) < 4.4 x 10^-8 at 90% confidence level.
Revisions and Files 1 revised July 10, 2009
File Date
Thumbnails		File Name File Type File Format File Size (Kb) Comments
19-AUG-2009 dmde egam.eps Figure or plot eps 35.56 tau->egamma: mec vs DeltaE (black-and-white)
19-AUG-2009 dmde egam col.eps Figure or plot eps 36.04 tau->egamma: mec Vs DeltaE (color)
19-AUG-2009 dmde mgam.eps Figure or plot eps 37.14 tau->mugamma: mec vs DeltaE (black-and-white)
19-AUG-2009 dmde mgam col.eps Figure or plot eps 37.62 tau->mugamma: mec Vs DeltaE (color)
Submitted ToPhysical Review Letters
Date SubmittedAugust 17, 2009
Journal Year2010
Journal Volume104
Journal Article/Page Range021802
Categories
  • AWG: Tau and QED