期刊
PHYSICS LETTERS B
卷 692, 期 1, 页码 4-9出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2010.07.012
关键词
Tau; Lepton flavor violation; B-factory
资金
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- Japan Society for the Promotion of Science (JSPS)
- Tau-Lepton Physics Research Center of Nagoya University
- Australian Research Council
- Australian Department of Industry, Innovation, Science and Research
- National Natural Science Foundation of China [10575109, 10775142, 10875115, 10825524]
- Ministry of Education, Youth and Sports of the Czech Republic [LA10033]
- Department of Science and Technology of India
- BK21
- Ministry Education Science and Technology
- National Research Foundation of Korea
- NSDC of the Korea Institute of Science and Technology Information
- Polish Ministry of Science and Higher Education
- Ministry of Education and Science of the Russian Federation
- Russian Federal Agency for Atomic Energy
- Slovenian Research Agency
- Swiss National Science Foundation
- National Science Council
- Ministry of Education of Taiwan
- U.S. Department of Energy
- MEXT
We have searched for the lepton-flavor-violating decays tau(-) -> l(-)K(S)(0)) and l(-)K(S)(0)K(S)(0) (l = e or mu), 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: beta(tau(-) -> e(-)K(S)(0)) < 2.6 x 10(-8), beta(tau(-) -> mu K--(S)0) < 2.3 x 10(-8), beta(tau(-) -> e(-)K(S)(0)K(S)(0)) < 7.1 x 10(-8) and beta(tau(-) -> mu(-KSKS0)-K-0) < 8.0 x 10(-8) at the 90% confidence level. (C) 2010 Elsevier B.V. All rights reserved.
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