Search for lepton flavor violating τ- decays into ℓ-KS 0 and ℓ-KS 0KS 0

Y. Miyazaki, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, A. Chen, K. F. Chen, P. Chen, B. G. CheonI. S. Cho, Y. Choi, M. Danilov, M. Dash, Z. Doležal, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. H. Kim, Y. J. Kim, B. R. Ko, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. H. Lee, J. Li, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, G. B. Mohanty, T. Mori, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. K. Park, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, P. Smerkol, A. Sokolov, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, M. Tanaka, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, S. Uno, Y. Usov, G. Varner, K. Vervink, C. H. Wang, J. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, Eunil Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, O. Zyukova

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Abstract

We have searched for the lepton-flavor-violating decays τ- decays into ℓ-KS 0 and ℓ-KS 0KS 0 (ℓ=e or μ), using a data sample of 671 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No evidence for a signal was found in any of the decay modes, and we set the following upper limits for the branching fractions: B(τ-→e-KS 0)<2.6 ×10-8, B(τ-→μ-KS 0)<2 .3×10-8, B(τ-→e-KS 0KS 0)<7.1×10-8 and B(τ-→μ-KS 0 KS 0)<8.0×10-8 at the 90% confidence level.

Original languageEnglish
Pages (from-to)4-9
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume692
Issue number1
DOIs
Publication statusPublished - 2010 Aug 1

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Keywords

  • B-factory
  • Lepton flavor violation
  • Tau

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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