Search for lepton-flavor-violating τ decays into three leptons with 719 million produced τ+τ− pairs

• DOI: 10.1016/j.physletb.2010.03.037
• Publication Date: 2010-03-18T08:26:26Z
• Authors: K. Hayasaka; K. Inami; Y. Miyazaki; K. Arinstein; V. Aulchenko; T. Aushev; A.M. Bakich; A. Bay; K. Belous; V. Bhardwaj; M. Bischofberger; A. Bozek; M. Bračko; T.E. Browder; M.-C. Chang; P. Chang; A. Chen; P. Chen; B.G. Cheon; C.-C. Chiang; I.-S. Cho; Y. Choi; J. Dalseno; A. Drutskoy; S. Eidelman; D. Epifanov; M. Feindt; N. Gabyshev; P. Goldenzweig; B. Golob; H. Ha; J. Haba; B.-Y. Han; H. Hayashii; Y. Hoshi; W.-S. Hou; Y.B. Hsiung; H.J. Hyun; T. Iijima; R. Itoh; M. Iwabuchi; M. Iwasaki; Y. Iwasaki; J.H. Kang; T. Kawasaki; C. Kiesling; H.J. Kim; H.O. Kim; J.H. Kim; S.K. Kim; Y.I. Kim; Y.J. Kim; B.R. Ko; P. Kodyš; S. Korpar; P. Križan; P. Krokovny; T. Kumita; A. Kuzmin; P. Kvasnička; Y.-J. Kwon; S.-H. Kyeong; J.S. Lange; M.J. Lee; S.-H. Lee; J. Li; C. Liu; Y. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; K. Miyabayashi; H. Miyata; R. Mizuk; T. Mori; E. Nakano; M. Nakao; H. Nakazawa; Z. Natkaniec; S. Nishida; K. Nishimura; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; S.L. Olsen; P. Pakhlov; G. Pakhlova; C.W. Park; H. Park; H.K. Park; R. Pestotnik; M. Petrič; L.E. Piilonen; A. Poluektov; M. Röhrken; S. Ryu; H. Sahoo; K. Sakai; Y. Sakai; O. Schneider; C. Schwanda; K. Senyo; M.E. Sevior; M. Shapkin; C.P. Shen; J.-G. Shiu; B. Shwartz; J.B. Singh; P. Smerkol; E. Solovieva; M. Starič; T. Sumiyoshi; Y. Teramoto; K. Trabelsi; S. Uehara; T. Uglov; Y. Unno; S. Uno; P. Urquijo; G. Varner; K. Vervink; C.H. Wang; P. Wang; Y. Watanabe; R. Wedd; E. Won; B.D. Yabsley; Y. Yamashita; C.C. Zhang; Z.P. Zhang; T. Zivko; A. Zupanc; O. Zyukova
• Keywords: KEKB; Electron–positron annihilation; Branching fraction

We present a search for lepton-flavor-violating tau decays into three leptons (electrons or muons) using 782 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 between 1.5 x 10^-8 and 2.7 x 10^-8.<br/>13 pages, 7 figures<br/>