Upper bound on the decay tau-->microgamma from the Belle detector

K Abe; K Abe; T Abe; I Adachi; Byoung Sup Ahn; H Aihara; K Akai; M Akatsu; M Akemoto; Y Asano; T Aso; V Aulchenko; T Aushev; A M Bakich; Y Ban; S Banerjee; A Bay; I Bedny; I Bizjak; A Bondar; A Bozek; M Bracko; T E Browder; Y Chao; K-F Chen; B G Cheon; R Chistov; S-K Choi; Y Choi; Y K Choi; A Chuvikov; M Danilov; L Y Dong; A Drutskoy; S Eidelman; V Eiges; Y Enari; J Flanagan; C Fukunaga; K Furukawa; N Gabyshev; A Garmash; T Gershon; R Guo; J Haba; C Hagner; F Handa; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; W-S Hou; H-C Huang; T Iijima; H Ikeda; K Inami; A Ishikawa; R Itoh; H Iwasaki; M Iwasaki; Y Iwasaki; J H Kang; J S Kang; N Katayama; H Kawai; T Kawasaki; H Kichimi; E Kikutani; H J Kim; J H Kim; S K Kim; K Kinoshita; P Koppenburg; S Korpar; P Krokovny; R Kulasiri; A Kuzmin; Y-J Kwon; S H Lee; T Lesiak; J Li; A Limosani; S-W Lin; D Liventsev; F Mandl; T Matsumoto; A Matyja; S Michizono; T Mimashi; W Mitaroff; K Miyabayashi; H Miyata; D Mohapatra; T Mori; T Nagamine; Y Nagasaka; T T Nakamura; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; Y Ogawa; K Ohmi; Y Ohnishi; T Ohshima; N Ohuchi; T Okabe; S Okuno; W Ostrowicz; H Ozaki; H Palka; C W Park; H Park; N Parslow; L E Piilonen; N Root; H Sagawa; S Saitoh; Y Sakai; M Satapathy; A Satpathy; O Schneider; J Schümann; A J Schwartz; S Semenov; K Senyo; R Seuster; M E Sevior; H Shibuya; T Shidara; B Shwartz; V Sidorov; J B Singh; N Soni; S Stanic; M Staric; A Sugi; K Sumisawa; T Sumiyoshi; S Suzuki; S Y Suzuki; F Takasaki; K Tamai; N Tamura; M Tanaka; M Tawada; G N Taylor; Y Teramoto; T Tomura; T Tsuboyama; T Tsukamoto; S Uehara; K Ueno; S Uno; G Varner; C C Wang; C H Wang; J G Wang; Y Watanabe; E Won; B D Yabsley; Y Yamada; A Yamaguchi; Y Yamashita; M Yamauchi; H Yanai; Heyoung Yang; M Yoshida; Y Yusa; Z P Zhang; Y Zheng; V Zhilich; D Zontar; Belle Collaboration

doi:10.1103/PhysRevLett.92.171802

Upper bound on the decay tau-->microgamma from the Belle detector

Phys Rev Lett. 2004 Apr 30;92(17):171802. doi: 10.1103/PhysRevLett.92.171802. Epub 2004 Apr 29.

Authors

K Abe¹, K Abe, T Abe, I Adachi, Byoung Sup Ahn, H Aihara, K Akai, M Akatsu, M Akemoto, Y Asano, T Aso, V Aulchenko, T Aushev, A M Bakich, Y Ban, S Banerjee, A Bay, I Bedny, I Bizjak, A Bondar, A Bozek, M Bracko, T E Browder, Y Chao, K-F Chen, B G Cheon, R Chistov, S-K Choi, Y Choi, Y K Choi, A Chuvikov, M Danilov, L Y Dong, A Drutskoy, S Eidelman, V Eiges, Y Enari, J Flanagan, C Fukunaga, K Furukawa, N Gabyshev, A Garmash, T Gershon, R Guo, J Haba, C Hagner, F Handa, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, W-S Hou, H-C Huang, T Iijima, H Ikeda, K Inami, A Ishikawa, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, J H Kang, J S Kang, N Katayama, H Kawai, T Kawasaki, H Kichimi, E Kikutani, H J Kim, J H Kim, S K Kim, K Kinoshita, P Koppenburg, S Korpar, P Krokovny, R Kulasiri, A Kuzmin, Y-J Kwon, S H Lee, T Lesiak, J Li, A Limosani, S-W Lin, D Liventsev, F Mandl, T Matsumoto, A Matyja, S Michizono, T Mimashi, W Mitaroff, K Miyabayashi, H Miyata, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, T T Nakamura, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, Y Ogawa, K Ohmi, Y Ohnishi, T Ohshima, N Ohuchi, T Okabe, S Okuno, W Ostrowicz, H Ozaki, H Palka, C W Park, H Park, N Parslow, L E Piilonen, N Root, H Sagawa, S Saitoh, Y Sakai, M Satapathy, A Satpathy, O Schneider, J Schümann, A J Schwartz, S Semenov, K Senyo, R Seuster, M E Sevior, H Shibuya, T Shidara, B Shwartz, V Sidorov, J B Singh, N Soni, S Stanic, M Staric, A Sugi, K Sumisawa, T Sumiyoshi, S Suzuki, S Y Suzuki, F Takasaki, K Tamai, N Tamura, M Tanaka, M Tawada, G N Taylor, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, G Varner, C C Wang, C H Wang, J G Wang, Y Watanabe, E Won, B D Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, Heyoung Yang, M Yoshida, Y Yusa, Z P Zhang, Y Zheng, V Zhilich, D Zontar; Belle Collaboration

Affiliation

¹ High Energy Accelerator Research Organization (KEK), Tsukuba, Japan.

PMID: 15169139
DOI: 10.1103/PhysRevLett.92.171802

Abstract

We have performed a search for the lepton-flavor-violating decay tau-->microgamma using a data sample of 86.3 fb(-1) accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau-->microgamma)<3.1 x 10(-7) at the 90% confidence level.