Search for τ→eγ decay at Belle

• Published in: Physics letters. B 2005-04, Vol.613 (1-2), p.20-28
• Main Authors: Hayasaka, K., Abe, K., Aihara, H., Asano, Y., Bahinipati, S., Bakich, A.M., Bitenc, U., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Chang, M.-C., Chang, P., Chen, A., Chen, W.T., Choi, Y.K., Dash, M., Epifanov, D., Fratina, S., Garmash, A., Gokhroo, G., Haba, J., Hinz, L., Hokuue, T., Hoshi, Y., Hou, W.-S., Iijima, T., Imoto, A., Inami, K., Iwasaki, Y., Kang, J.H., Kang, J.S., Kataoka, S.U., Katayama, N., Kawai, H., Kawasaki, T., Khan, H.R., Kichimi, H., Kim, J.H., Kim, S.K., Kuo, C.C., Kuzmin, A., Kwon, Y.-J., Leder, G., Lee, S.E., Lee, S.H., Lesiak, T., Li, J., Lin, S.-W., Mandl, F., Matsumoto, T., Mitaroff, W., Miyabayashi, K., Miyake, H., Miyata, H., Nagamine, T., Nagasaka, Y., Nakano, E., Nakao, M., Natkaniec, Z., Nitoh, O., Ohshima, T., Okabe, T., Olsen, S.L., Ostrowicz, W., Park, C.W., Parslow, N., Pestotnik, R., Piilonen, L.E., Sagawa, H., Schietinger, T., Schneider, O., Senyo, K., Shibuya, H., Shwartz, B., Sidorov, V., Somov, A., Soni, N., Stamen, R., Starič, M., Sumisawa, K., Sumiyoshi, T., Suzuki, S.Y., Tajima, O., Takasaki, F., Tanaka, M., Tian, X.C., Tsuboyama, T., Uehara, S., Varner, G., Wang, C.C., Watanabe, M., Yamaguchi, A., Yamauchi, M., Yuan, Y., Zhang, Z.P., Zhilich, V., Žontar, D.
• Format: Article
• Language: English
• Subjects: Decays of taus; Lepton number; Taus
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/j.physletb.2005.03.028

We have searched for the lepton-flavor-violating decay τ→eγ using a data sample of 86.7 fb−1 collected with the Belle detector at the KEKB asymmetric e+e− collider. No evidence for a signal is obtained, and we set an upper limit for the branching fraction B(τ→eγ)