Search for the lepton-flavor-violating decay tau- -->micro-eta at Belle

Y Enari; K Abe; K Abe; T Abe; I Adachi; H Aihara; Y Asano; T Aso; V Aulchenko; T Aushev; A M Bakich; Y Ban; I Bedny; I Bizjak; A Bondar; A Bozek; M Bracko; T E Browder; Y Chao; B G Cheon; S-K Choi; Y Choi; Y K Choi; A Chuvikov; M Danilov; L Y Dong; S Eidelman; V Eiges; D Epifanov; C Fukunaga; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; F Handa; T Hara; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; W-S Hou; H-C Huang; T Iijima; K Inami; A Ishikawa; R Itoh; H Iwasaki; M Iwasaki; Y Iwasaki; J H Kang; J S Kang; S U Kataoka; N Katayama; H Kawai; T Kawasaki; H Kichimi; H J Kim; J H Kim; K Kinoshita; P Koppenburg; S Korpar; P Krizan; P Krokovny; R Kulasiri; A Kuzmin; Y-J Kwon; G Leder; S H Lee; T Lesiak; S-W Lin; J MacNaughton; F Mandl; T Matsumoto; A Matyja; W Mitaroff; H Miyake; H Miyata; G R Moloney; T Nagamine; E Nakano; M Nakao; H Nakazawa; S Nishida; O Nitoh; S Ogawa; T Ohshima; S Okuno; S L Olsen; W Ostrowicz; H Ozaki; P Pakhlov; C W Park; H Park; K S Park; N Parslow; L E Piilonen; A Poluektov; N Root; N Sato; H Sagawa; S Saitoh; Y Sakai; O Schneider; A J Schwartz; S Semenov; K Senyo; H Shibuya; B Shwartz; V Sidorov; J B Singh; N Soni; S Stanic; M Staric; A Sugi; K Sumisawa; T Sumiyoshi; S Y Suzuki; F Takasaki; K Tamai; N Tamura; M Tanaka; Y Teramoto; T Tomura; T Tsuboyama; S Uehara; K Ueno; S Uno; G Varner; C H Wang; J G Wang; Y Watanabe; B D Yabsley; Y Yamada; M Yamauchi; Heyoung Yang; J Ying; Y Yusa; Z P Zhang; V Zhilich; D Zontar; Belle Collaboration

doi:10.1103/PhysRevLett.93.081803

Search for the lepton-flavor-violating decay tau- -->micro-eta at Belle

Phys Rev Lett. 2004 Aug 20;93(8):081803. doi: 10.1103/PhysRevLett.93.081803. Epub 2004 Aug 19.

Authors

Y Enari¹, K Abe, K Abe, T Abe, I Adachi, H Aihara, Y Asano, T Aso, V Aulchenko, T Aushev, A M Bakich, Y Ban, I Bedny, I Bizjak, A Bondar, A Bozek, M Bracko, T E Browder, Y Chao, B G Cheon, S-K Choi, Y Choi, Y K Choi, A Chuvikov, M Danilov, L Y Dong, S Eidelman, V Eiges, D Epifanov, C Fukunaga, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, F Handa, T Hara, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, W-S Hou, H-C Huang, T Iijima, K Inami, A Ishikawa, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, J H Kang, J S Kang, S U Kataoka, N Katayama, H Kawai, T Kawasaki, H Kichimi, H J Kim, J H Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, R Kulasiri, A Kuzmin, Y-J Kwon, G Leder, S H Lee, T Lesiak, S-W Lin, J MacNaughton, F Mandl, T Matsumoto, A Matyja, W Mitaroff, H Miyake, H Miyata, G R Moloney, T Nagamine, E Nakano, M Nakao, H Nakazawa, S Nishida, O Nitoh, S Ogawa, T Ohshima, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, C W Park, H Park, K S Park, N Parslow, L E Piilonen, A Poluektov, N Root, N Sato, H Sagawa, S Saitoh, Y Sakai, O Schneider, A J Schwartz, S Semenov, K Senyo, H Shibuya, B Shwartz, V Sidorov, J B Singh, N Soni, S Stanic, M Staric, A Sugi, K Sumisawa, T Sumiyoshi, S Y Suzuki, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, T Tomura, T Tsuboyama, S Uehara, K Ueno, S Uno, G Varner, C H Wang, J G Wang, Y Watanabe, B D Yabsley, Y Yamada, M Yamauchi, Heyoung Yang, J Ying, Y Yusa, Z P Zhang, V Zhilich, D Zontar; Belle Collaboration

Affiliation

¹ Nagoya University, Nagoya.

PMID: 15447174
DOI: 10.1103/PhysRevLett.93.081803

Abstract

We have searched for the lepton flavor violating decay tau(-)-->micro(-)eta using a data sample of 84.3 fb(-1) accumulated with the Belle detector at KEK. The eta meson was detected through the decay modes: eta-->gammagamma and pi(+)pi(-)pi(0). No signal candidates are found, and we obtain an upper limit for the branching fraction B(tau(-)-->micro(-)eta)<3.4 x 10(-7) at the 90% confidence level.