Upper bound on the decay τ μγ 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. Bračko; 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. Stanič; M. Starič; 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. Žontar

doi:10.1103/PhysRevLett.92.171802

Upper bound on the decay τ μγ 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. BondarA. Bozek, M. Bračko, 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. Stanič, M. Starič, 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. Žontar

Department of Physics

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70 Citations (Scopus)

Abstract

A study using 86.3 fb^-1 of data collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e⁺e ^- collider was presented. An event composed of exactly two oppositely charged tracks and one photon candidate, that is consistent with a τ⁺τ^- event in which one τ decays to μγ and the other τ decys to a non muon charged particle, neutrinos and any number of γs was searched for. The selection criteria were determined by examining Monte Carlo simulations for signal τpair decay and background events. It was also assumed that the two body decay τ→μγ had a uniform angular distribution in the τ's rest system.

Original language	English
Article number	171802
Pages (from-to)	171802-1-171802-6
Journal	Physical review letters
Volume	92
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.92.171802
Publication status	Published - 2004 Apr 30

Bibliographical note

Funding Information:
We wish to thank the KEKB accelerator group for their excellent operation of the KEKB accelerator. We are grateful to J. Hisano, A. Ilakovac, and Y. Okada for fruitful discussions. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under Contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under Contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy.

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.92.171802

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Abe, K., Abe, K., Abe, T., Adachi, I., Ahn, B. S., Aihara, H., Akai, K., Akatsu, M., Akemoto, M., Asano, Y., Aso, T., Aulchenko, V., Aushev, T., Bakich, A. M., Ban, Y., Banerjee, S., Bay, A., Bedny, I., Bizjak, I., ... Žontar, D. (2004). Upper bound on the decay τ μγ from the Belle detector. Physical review letters, 92(17), 171802-1-171802-6. Article 171802. https://doi.org/10.1103/PhysRevLett.92.171802

Abe, K, Abe, K, Abe, T, Adachi, I, Ahn, BS, Aihara, H, Akai, K, Akatsu, M, Akemoto, M, Asano, Y, Aso, T, Aulchenko, V, Aushev, T, Bakich, AM, Ban, Y, Banerjee, S, Bay, A, Bedny, I, Bizjak, I, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chao, Y, Chen, KF, Cheon, BG, Chistov, R, Choi, SK, Choi, Y, Choi, YK, Chuvikov, A, Danilov, M, Dong, LY, Drutskoy, A, Eidelman, S, Eiges, V, Enari, Y, Flanagan, J, Fukunaga, C, Furukawa, K, Gabyshev, N, Garmash, A, Gershon, T, Guo, R, Haba, J, Hagner, C, Handa, F, Hayashii, H, Hazumi, M, Hokuue, T, Hoshi, Y, Hou, WS, Huang, HC, Iijima, T, Ikeda, H, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, H, Iwasaki, M, Iwasaki, Y, Kang, JH, Kang, JS, Katayama, N, Kawai, H, Kawasaki, T, Kichimi, H, Kikutani, E, Kim, HJ, Kim, JH, Kim, SK, Kinoshita, K, Koppenburg, P, Korpar, S, Krokovny, P, Kulasiri, R, Kuzmin, A, Kwon, YJ, Lee, SH, Lesiak, T, Li, J, Limosani, A, Lin, SW, Liventsev, D, Mandl, F, Matsumoto, T, Matyja, A, Michizono, S, Mimashi, T, Mitaroff, W, Miyabayashi, K, Miyata, H, Mohapatra, D, Mori, T, Nagamine, T, Nagasaka, Y, Nakamura, TT, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ogawa, Y, Ohmi, K, Ohnishi, Y, Ohshima, T, Ohuchi, N, Okabe, T, Okuno, S, Ostrowicz, W, Ozaki, H, Palka, H, Park, CW, Park, H, Parslow, N, Piilonen, LE, Root, N, Sagawa, H, Saitoh, S, Sakai, Y, Satapathy, M, Satpathy, A, Schneider, O, Schümann, J, Schwartz, AJ, Semenov, S, Senyo, K, Seuster, R, Sevior, ME, Shibuya, H, Shidara, T, Shwartz, B, Sidorov, V, Singh, JB, Soni, N, Stanič, S, Starič, M, Sugi, A, Sumisawa, K, Sumiyoshi, T, Suzuki, S, Suzuki, SY, Takasaki, F, Tamai, K, Tamura, N, Tanaka, M, Tawada, M, Taylor, GN, Teramoto, Y, Tomura, T, Tsuboyama, T, Tsukamoto, T, Uehara, S, Ueno, K, Uno, S, Varner, G, Wang, CC, Wang, CH, Wang, JG, Watanabe, Y, Won, E, Yabsley, BD, Yamada, Y, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Yanai, H, Yang, H, Yoshida, M, Yusa, Y, Zhang, ZP, Zheng, Y, Zhilich, V & Žontar, D 2004, 'Upper bound on the decay τ μγ from the Belle detector', Physical review letters, vol. 92, no. 17, 171802, pp. 171802-1-171802-6. https://doi.org/10.1103/PhysRevLett.92.171802

@article{6d48d56ea333415197ef498f2d2b9f3d,

title = "Upper bound on the decay τ μγ from the Belle detector",

abstract = "A study using 86.3 fb-1 of data collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e+e - collider was presented. An event composed of exactly two oppositely charged tracks and one photon candidate, that is consistent with a τ+τ- event in which one τ decays to μγ and the other τ decys to a non muon charged particle, neutrinos and any number of γs was searched for. The selection criteria were determined by examining Monte Carlo simulations for signal τpair decay and background events. It was also assumed that the two body decay τ→μγ had a uniform angular distribution in the τ's rest system.",

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

note = "Funding Information: We wish to thank the KEKB accelerator group for their excellent operation of the KEKB accelerator. We are grateful to J. Hisano, A. Ilakovac, and Y. Okada for fruitful discussions. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under Contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under Contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy.",

year = "2004",

month = apr,

day = "30",

doi = "10.1103/PhysRevLett.92.171802",

language = "English",

volume = "92",

pages = "171802--1--171802--6",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

TY - JOUR

T1 - Upper bound on the decay τ μγ from the Belle detector

AU - Abe, K.

AU - Abe, T.

AU - Adachi, I.

AU - Ahn, Byoung Sup

AU - Aihara, H.

AU - Akai, K.

AU - Akatsu, M.

AU - Akemoto, M.

AU - Asano, Y.

AU - Aso, T.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Ban, Y.

AU - Banerjee, S.

AU - Bay, A.

AU - Bedny, I.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, K. F.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Chuvikov, A.

AU - Danilov, M.

AU - Dong, L. Y.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Eiges, V.

AU - Enari, Y.

AU - Flanagan, J.

AU - Fukunaga, C.

AU - Furukawa, K.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gershon, T.

AU - Guo, R.

AU - Haba, J.

AU - Hagner, C.

AU - Handa, F.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Huang, H. C.

AU - Iijima, T.

AU - Ikeda, H.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, H.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Kang, J. S.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kikutani, E.

AU - Kim, H. J.

AU - Kim, J. H.

AU - Kim, S. K.

AU - Kinoshita, K.

AU - Koppenburg, P.

AU - Korpar, S.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, S. H.

AU - Lesiak, T.

AU - Li, J.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Matyja, A.

AU - Michizono, S.

AU - Mimashi, T.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Mohapatra, D.

AU - Mori, T.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakamura, T. T.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ogawa, Y.

AU - Ohmi, K.

AU - Ohnishi, Y.

AU - Ohshima, T.

AU - Ohuchi, N.

AU - Okabe, T.

AU - Okuno, S.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Parslow, N.

AU - Piilonen, L. E.

AU - Root, N.

AU - Sagawa, H.

AU - Saitoh, S.

AU - Sakai, Y.

AU - Satapathy, M.

AU - Satpathy, A.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwartz, A. J.

AU - Semenov, S.

AU - Senyo, K.

AU - Seuster, R.

AU - Sevior, M. E.

AU - Shibuya, H.

AU - Shidara, T.

AU - Shwartz, B.

AU - Sidorov, V.

AU - Singh, J. B.

AU - Soni, N.

AU - Stanič, S.

AU - Starič, M.

AU - Sugi, A.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Suzuki, S.

AU - Suzuki, S. Y.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tamura, N.

AU - Tanaka, M.

AU - Tawada, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tomura, T.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Ueno, K.

AU - Uno, S.

AU - Varner, G.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, J. G.

AU - Watanabe, Y.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamada, Y.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yanai, H.

AU - Yang, Heyoung

AU - Yoshida, M.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zheng, Y.

AU - Zhilich, V.

AU - Žontar, D.

N1 - Funding Information: We wish to thank the KEKB accelerator group for their excellent operation of the KEKB accelerator. We are grateful to J. Hisano, A. Ilakovac, and Y. Okada for fruitful discussions. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Education, Science and Training; the National Science Foundation of China under Contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under Contract No. 2P03B 01324; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy.

PY - 2004/4/30

Y1 - 2004/4/30

N2 - A study using 86.3 fb-1 of data collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e+e - collider was presented. An event composed of exactly two oppositely charged tracks and one photon candidate, that is consistent with a τ+τ- event in which one τ decays to μγ and the other τ decys to a non muon charged particle, neutrinos and any number of γs was searched for. The selection criteria were determined by examining Monte Carlo simulations for signal τpair decay and background events. It was also assumed that the two body decay τ→μγ had a uniform angular distribution in the τ's rest system.

AB - A study using 86.3 fb-1 of data collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e+e - collider was presented. An event composed of exactly two oppositely charged tracks and one photon candidate, that is consistent with a τ+τ- event in which one τ decays to μγ and the other τ decys to a non muon charged particle, neutrinos and any number of γs was searched for. The selection criteria were determined by examining Monte Carlo simulations for signal τpair decay and background events. It was also assumed that the two body decay τ→μγ had a uniform angular distribution in the τ's rest system.

UR - http://www.scopus.com/inward/record.url?scp=2942611423&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.92.171802

DO - 10.1103/PhysRevLett.92.171802

M3 - Article

AN - SCOPUS:2942611423

SN - 0031-9007

VL - 92

SP - 171802-1-171802-6

JO - Physical review letters

JF - Physical review letters

IS - 17

M1 - 171802

ER -

Upper bound on the decay τ μγ from the Belle detector

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Bibliographical note

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