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. ChistovI. 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

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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
Publication statusPublished - 2008 Feb 21

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Miyazaki, Y., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Bitenc, U., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chen, A., Chen, K. F., Chen, W. T., Cheon, B. G., ... Zyukova, O. (2008). Search for lepton flavor violating τ decays into three leptons. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 660(3), 154-160. https://doi.org/10.1016/j.physletb.2007.12.046