Search for lepton flavor violating τ decays into three leptons

Y. Miyazaki,I. Adachi,H. Aihara, K. Arinstein,V. Aulchenko,T. Aushev,A.M. Bakich,V. Balagura,E. Barberio, A. Bay,U. Bitenc,A. Bondar,A. Bozek, M. Bračko,T.E. Browder,A. Chen,K.-F. Chen,W.T. Chen,B.G. Cheon, R. Chistov

Physics Letters B（2008）

引用 87|浏览162

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摘要

We search for lepton flavor violating τ decays into three leptons (electron or muon) using 535 fb−1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. No evidence for these decays is observed, and we set 90% confidence level upper limits on the branching fractions of (2.0–4.1)×10−8. These results improve upon our previously published upper limits by factors of 4.9 to 10.

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11.30.Fs,13.35.Dx,14.60.Fg

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