Search for neutrinoless decays τ → ℓ h h and τ → ℓ V0

Y. Yusa, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, V. Aulchenko, A. Bay, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, T. E. Browder, A. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, A. Chuvikov, S. ColeJ. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, A. Gorišek, H. C. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. S. Hou, T. Iijima, K. Ikado, K. Inami, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, S. K. Kim, S. Korpar, P. Križan, R. Kulasiri, C. C. Kuo, A. Kuzmin, Y. J. Kwon, T. Lesiak, S. W. Lin, D. Liventsev, G. Majumder, T. Matsumoto, W. Mitaroff, Y. Miyazaki, R. Mizuk, T. Nagamine, E. Nakano, Z. Natkaniec, S. Nishida, S. Ogawa, T. Ohshima, T. Okabe, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, H. Palka, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, S. Uno, Y. Usov, G. Varner, S. Villa, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang

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Abstract

We have searched for neutrinoless τ lepton decays into ℓhh or ℓ V0, where ℓ stands for an electron or muon, h for a charged light hadron, π or K, and V0 for a neutral vector meson, ρ0, K* (892)0 and φ{symbol}, using a 158 fb-1 data sample collected with the Belle detector at the KEKB e+ e- collider. Since the number of events observed are consistent with the expected background, we set upper limits on the branching fractions in the range of (1.6 - 8.0) × 10-7 for various decay modes at the 90% confidence level.

Original languageEnglish
Pages (from-to)138-144
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume640
Issue number4
DOIs
Publication statusPublished - Sep 14 2006

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Keywords

  • TAU lepton flavor violation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Yusa, Y., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., Aulchenko, V., Bay, A., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Browder, T. E., Chen, A., Cheon, B. G., Chistov, R., Choi, Y., Choi, Y. K., Chuvikov, A., ... Zhang, Z. P. (2006). Search for neutrinoless decays τ → ℓ h h and τ → ℓ V0. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 640(4), 138-144. https://doi.org/10.1016/j.physletb.2006.07.025