Searches for Lepton Flavor Violation in the Decays τ ± → e ± γ and τ ± → μ ± γ
- Bernard Aubert
- Y. Karyotakis
- J. P. Lees
- Vincent Poireau
- Elisabetta Prencipe
- X. Prudent
- V. Tisserand
- J. Garra Ticó
- E. Graugés
- M. Martinelli
- ANTIMO PALANO
- Marco Pappagallo
- G. Eigen
- B. Stugu
- L. Sun
- M. Battaglia
- David N. Brown
- B. H. Hooberman
- Leroy T. Kerth
- Yu. G. Kolomensky
- G. Lynch
- I. L. Osipenkov
- Kerstin Tackmann
- T. Tanabe
- C. M. Hawkes
- N. Soni
- A. T. Watson
- H. Koch
- T. Vazquez Schroeder
- D. J. Asgeirsson
- Christopher Hearty
- T. S. Mattison
- J. A. McKenna
- Matthew J. Barrett
- A. Khan
- A. Randle-Conde
- V. E. Blinov
- A. D. Bukin
- А. Р. Бузыкаев
- В. П. Дружинин
- V. B. Golubev
- A. P. Onuchin
- S. I. Serednyakov
- Yu. I. Skovpen
- E. P. Solodov
- Korneliy Yu. Todyshev
- M. Bondioli
- S. Curry
- Ivo Gough Eschrich
- D. Kirkby
- A. J. Lankford
- P. Lund
- Mark A. Mandelkern
- E. C. Martin
- D. P. Stoker
- H. Atmacan
- J. William Gary
- Fuqiuxuan Liu
- O. Long
- G. M. Vitug
- Zafar Yasin
- V. Sharma
- C. Campagnari
- T. M. Hong
- D. Kovalskyi
- M. A. Mazur
- Jeffrey D. Richman
- T. W. Beck
- A. M. Eisner
- C. A. Heusch
- J. Kroseberg
- W. S. Lockman
- A. J. Martínez
- Terry LeRoy Schalk
- B. A. Schumm
- A. Seiden
- L. Wang
- L. O. Winstrom
- C. H. Cheng
- D. A. Doll
- B. Echenard
- F. Fang
- David G. Hitlin
- I. Narsky
- Piti Ongmongkolkul
- Timofei Piatenko
- Frank C. Porter
- R. Andreassen
- Giampiero Mancinelli
- B. T. Meadows
- K. Mishra
- M. D. Sokoloff
- P. C. Bloom
- W. T. Ford
- Alessandro Gaz
- J. F. Hirschauer
- Martin Nagel
- U. Nauenberg
- J. G. Smith
- S. R. Wagner
- PBP. K. Behera
Physical Review Letters · 2010 · American Physical Society
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Abstract
Searches for lepton-flavor-violating decays of a $\ensuremath{\tau}$ lepton to a lighter mass lepton and a photon have been performed with the entire data set of $(963\ifmmode\pm\else\textpm\fi{}7)\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }\ensuremath{\tau}$ decays collected by the BABAR detector near the $\ensuremath{\Upsilon}(4S)$, $\ensuremath{\Upsilon}(3S)$ and $\ensuremath{\Upsilon}(2S)$ resonances. The searches yield no evidence of signals and we set upper limits on the branching fractions of $\mathcal{B}({\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{e}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\gamma})<3.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$ and $\mathcal{B}({\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\gamma})<4.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}8}$ at 90% confidence level.