Search for lepton flavor violating τ- decays with a KS 0 meson

Y. Miyazaki, K. Abe, K. Abe, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, M. Barbero, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, A. ChenW. T. Chen, R. Chistov, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, D. Epifanov, N. Gabyshev, T. Gershon, A. Gorišek, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, H. R. Khan, H. Kichimi, H. O. Kim, S. Korpar, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. Lee, T. Lesiak, S. W. Lin, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, Y. Onuki, H. Ozaki, H. Palka, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, T. Schietinger, O. Schneider, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, Eunil Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, V. Zhilich

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Abstract

We have searched for the lepton flavor violating decays τ- → ℓ- KS 0 (ℓ = e or μ), using a data sample of 281 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No evidence for a signal was found in either of the decay modes, and we set the following upper limits for the branching fractions: B (τ- → e- KS 0) < 5.6 × 10-8 and B (τ- → μ- KS 0) < 4.9 × 10-8 at the 90% confidence level. These results improve the previously published limits set by the CLEO Collaboration by factors of 16 and 19, respectively.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume639
Issue number3-4
DOIs
Publication statusPublished - 2006 Aug 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Miyazaki, Y., Abe, K., Abe, K., Aihara, H., Anipko, D., Arinstein, K., Aulchenko, V., Aushev, T., Bakich, A. M., Barbero, M., Bedny, I., Belous, K., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., ... Zhilich, V. (2006). Search for lepton flavor violating τ- decays with a KS 0 meson. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 639(3-4), 159-164. https://doi.org/10.1016/j.physletb.2006.05.086