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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
  • I. S. Cho, Y. Choi, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, H. Ha, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, H. Kaji, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, Y. Kozakai, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, S. W. Lin, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, O. Schneider, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. G. Shiu, B. Shwartz, A. Sokolov, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova
  • Nagoya University
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • RAS - Budker Institute of Nuclear Physics
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • The University of Sydney
  • University of Melbourne
  • Jožef Stefan Institute
  • H. Niewodniczanski Institute of Nuclear Physics
  • University of Maribor
  • University of Hawai'i at Mānoa
  • National Central University
  • National Taiwan University
  • Hanyang University
  • Yonsei University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • Korea University
  • Nara Women's University
  • The University of Osaka
  • Tohoku Gakuin University
  • Kyungpook National University
  • Saga University
  • Chiba University
  • Niigata University
  • The Graduate University for Advanced Studies
  • University of Ljubljana
  • Panjab University
  • Seoul National University
  • Austrian Academy of Sciences
  • Tohoku University
  • Osaka Metropolitan University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • CAS - Institute of High Energy Physics
  • Institute for High Energy Physics
  • University of Nova Gorica
  • Tokyo Metropolitan University
  • National United University Taiwan
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to journalArticlepeer-review

64 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)154-160
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume660
Issue number3
DOIs
StatePublished - 21 Feb 2008

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