Search for lepton flavor violating τ- decays into ℓ- η, ℓ- η′ and ℓ- π0

Y. Miyazaki; I. Adachi; H. Aihara; D. Anipko; K. Arinstein; V. Aulchenko; T. Aziz; A. M. Bakich; E. Barberio; A. Bay; I. Bedny; K. Belous; U. Bitenc; I. Bizjak; A. Bondar; M. Bračko; T. E. Browder; A. Chen; W. T. Chen; B. G. Cheon; Y. Choi; Y. K. Choi; J. Dalseno; S. Eidelman; D. Epifanov; S. Fratina; N. Gabyshev; A. Go; A. Gorišek; H. Ha; J. Haba; K. Hayasaka; H. Hayashii; M. Hazumi; D. Heffernan; T. Hokuue; Y. Hoshi; S. Hou; W. S. Hou; T. Iijima; A. Imoto; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; H. Kaji; P. Kapusta; H. Kawai; T. Kawasaki; H. Kichimi; Y. J. Kim; S. Korpar; P. Križan; P. Krokovny; R. Kulasiri; R. Kumar; C. C. Kuo; A. Kuzmin; Y. J. Kwon; M. J. Lee; T. Lesiak; S. W. Lin; F. Mandl; T. Matsumoto; H. Miyake; H. Miyata; T. Nagamine; Y. Nagasaka; M. Nakao; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; S. Okuno; Y. Onuki; H. Ozaki; P. Pakhlov; G. Pakhlova; H. Park; L. S. Peak; R. Pestotnik; L. E. Piilonen; A. Poluektov; H. Sahoo; Y. Sakai; N. Satoyama; T. Schietinger; O. Schneider; J. Schümann; C. Schwanda; A. J. Schwartz; K. Senyo; M. E. Sevior; H. Shibuya; B. Shwartz; V. Sidorov; J. B. Singh; A. Somov; N. Soni; S. Stanič; M. Starič; H. Stoeck; T. Sumiyoshi; F. Takasaki; K. Tamai; M. Tanaka; G. N. Taylor; Y. Teramoto; X. C. Tian; I. Tikhomirov; T. Tsukamoto; S. Uehara; K. Ueno; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; S. Villa; A. Vinokurova; C. H. Wang; M. Watanabe; Y. Watanabe; E. Won; A. Yamaguchi; Y. Yamashita; M. Yamauchi; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc

doi:10.1016/j.physletb.2007.03.027

Search for lepton flavor violating τ^- decays into ℓ^- η, ℓ^- η^′ and ℓ^- π⁰

Y. Miyazaki, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aziz, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, M. Bračko, T. E. Browder, A. Chen, W. T. Chen, B. G. CheonY. Choi, Y. K. Choi, J. Dalseno, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Go, A. Gorišek, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, T. Lesiak, S. W. Lin, F. Mandl, T. Matsumoto, H. Miyake, H. Miyata, T. Nagamine, Y. Nagasaka, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, A. Vinokurova, C. H. Wang, M. Watanabe, Y. Watanabe, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

Department of Physics

Research output: Contribution to journal › Article › peer-review

66 Citations (Scopus)

Abstract

We have searched for lepton-flavor-violating τ decays with a pseudoscalar meson (η, η^′ and π⁰) using a data sample of 401 fb^-1 collected with the Belle detector at the KEKB asymmetric-energy e⁺ e^- collider. No evidence for these decays is found and we set the following upper limits on the branching fractions: B (τ^- → e^- η) < 9.2 × 10^-8, B (τ^- → μ^- η) < 6.5 × 10^-8, B (τ^- → e^- η^′) < 1.6 × 10^-7, B (τ^- → μ^- η^′) < 1.3 × 10^-7, B (τ^- → e^- π⁰) < 8.0 × 10^-8 and B (τ^- → μ^- π⁰) < 1.2 × 10^-7 at the 90% confidence level. These results improve our previously published upper limits by factors from 2.3 to 6.3.

Original language	English
Pages (from-to)	341-350
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	648
Issue number	5-6
DOIs	https://doi.org/10.1016/j.physletb.2007.03.027
Publication status	Published - 2007 May 17

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2007.03.027

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Miyazaki, Y., Adachi, I., Aihara, H., Anipko, D., Arinstein, K., Aulchenko, V., Aziz, T., Bakich, A. M., Barberio, E., Bay, A., Bedny, I., Belous, K., Bitenc, U., Bizjak, I., Bondar, A., Bračko, M., Browder, T. E., Chen, A., Chen, W. T., ... Zupanc, A. (2007). Search for lepton flavor violating τ^- decays into ℓ^- η, ℓ^- η^′ and ℓ^- π⁰. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 648(5-6), 341-350. https://doi.org/10.1016/j.physletb.2007.03.027

Miyazaki, Y, Adachi, I, Aihara, H, Anipko, D, Arinstein, K, Aulchenko, V, Aziz, T, Bakich, AM, Barberio, E, Bay, A, Bedny, I, Belous, K, Bitenc, U, Bizjak, I, Bondar, A, Bračko, M, Browder, TE, Chen, A, Chen, WT, Cheon, BG, Choi, Y, Choi, YK, Dalseno, J, Eidelman, S, Epifanov, D, Fratina, S, Gabyshev, N, Go, A, Gorišek, A, Ha, H, Haba, J, Hayasaka, K, Hayashii, H, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Iijima, T, Imoto, A, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Kaji, H, Kapusta, P, Kawai, H, Kawasaki, T, Kichimi, H, Kim, YJ, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lee, MJ, Lesiak, T, Lin, SW, Mandl, F, Matsumoto, T, Miyake, H, Miyata, H, Nagamine, T, Nagasaka, Y, Nakao, M, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Onuki, Y, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, H, Peak, LS, Pestotnik, R, Piilonen, LE, Poluektov, A, Sahoo, H, Sakai, Y, Satoyama, N, Schietinger, T, Schneider, O, Schümann, J, Schwanda, C, Schwartz, AJ, Senyo, K, Sevior, ME, Shibuya, H, Shwartz, B, Sidorov, V, Singh, JB, Somov, A, Soni, N, Stanič, S, Starič, M, Stoeck, H, Sumiyoshi, T, Takasaki, F, Tamai, K, Tanaka, M, Taylor, GN, Teramoto, Y, Tian, XC, Tikhomirov, I, Tsukamoto, T, Uehara, S, Ueno, K, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Villa, S, Vinokurova, A, Wang, CH, Watanabe, M, Watanabe, Y, Won, E, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2007, 'Search for lepton flavor violating τ^- decays into ℓ^- η, ℓ^- η^′ and ℓ^- π⁰', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 648, no. 5-6, pp. 341-350. https://doi.org/10.1016/j.physletb.2007.03.027

@article{be250e96b8a84756a3ba768e07843606,

title = "Search for lepton flavor violating τ- decays into ℓ- η, ℓ- η′ and ℓ- π0",

abstract = "We have searched for lepton-flavor-violating τ decays with a pseudoscalar meson (η, η′ and π0) using a data sample of 401 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for these decays is found and we set the following upper limits on the branching fractions: B (τ- → e- η) < 9.2 × 10-8, B (τ- → μ- η) < 6.5 × 10-8, B (τ- → e- η′) < 1.6 × 10-7, B (τ- → μ- η′) < 1.3 × 10-7, B (τ- → e- π0) < 8.0 × 10-8 and B (τ- → μ- π0) < 1.2 × 10-7 at the 90% confidence level. These results improve our previously published upper limits by factors from 2.3 to 6.3.",

author = "Y. Miyazaki and I. Adachi and H. Aihara and D. Anipko and K. Arinstein and V. Aulchenko and T. Aziz and Bakich, {A. M.} and E. Barberio and A. Bay and I. Bedny and K. Belous and U. Bitenc and I. Bizjak and A. Bondar and M. Bra{\v c}ko and Browder, {T. E.} and A. Chen and Chen, {W. T.} and Cheon, {B. G.} and Y. Choi and Choi, {Y. K.} and J. Dalseno and S. Eidelman and D. Epifanov and S. Fratina and N. Gabyshev and A. Go and A. Gori{\v s}ek and H. Ha and J. Haba and K. Hayasaka and H. Hayashii and M. Hazumi and D. Heffernan and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and T. Iijima and A. Imoto and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and H. Kaji and P. Kapusta and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {Y. J.} and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kulasiri and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lee, {M. J.} and T. Lesiak and Lin, {S. W.} and F. Mandl and T. Matsumoto and H. Miyake and H. Miyata and T. Nagamine and Y. Nagasaka and M. Nakao and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Y. Onuki and H. Ozaki and P. Pakhlov and G. Pakhlova and H. Park and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and A. Poluektov and H. Sahoo and Y. Sakai and N. Satoyama and T. Schietinger and O. Schneider and J. Sch{\"u}mann and C. Schwanda and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and H. Shibuya and B. Shwartz and V. Sidorov and Singh, {J. B.} and A. Somov and N. Soni and S. Stani{\v c} and M. Stari{\v c} and H. Stoeck and T. Sumiyoshi and F. Takasaki and K. Tamai and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and Tian, {X. C.} and I. Tikhomirov and T. Tsukamoto and S. Uehara and K. Ueno and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and S. Villa and A. Vinokurova and Wang, {C. H.} and M. Watanabe and Y. Watanabe and E. Won and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc",

note = "Funding Information: We are grateful to A. Brignole and A. Rossi for enlightening discussions. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. 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 and the Knowledge Innovation Program of the Chinese Academy of Sciences under contract No. 10575109 and IHEP-U-503; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea, the CHEP SRC program and Basic Research program (grant No. R01-2005-000-10089-0) of the Korea Science and Engineering Foundation, and the Pure Basic Research Group program of the Korea Research Foundation; the Polish State Committee for Scientific Research; the Ministry of Education and Science of the Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Research Agency; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.",

year = "2007",

month = may,

day = "17",

doi = "10.1016/j.physletb.2007.03.027",

language = "English",

volume = "648",

pages = "341--350",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "5-6",

}

TY - JOUR

T1 - Search for lepton flavor violating τ- decays into ℓ- η, ℓ- η′ and ℓ- π0

AU - Miyazaki, Y.

AU - Adachi, I.

AU - Aihara, H.

AU - Anipko, D.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Bay, A.

AU - Bedny, I.

AU - Belous, K.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chen, A.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Dalseno, J.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Go, A.

AU - Gorišek, A.

AU - Ha, H.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Iijima, T.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kaji, H.

AU - Kapusta, P.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, Y. J.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, M. J.

AU - Lesiak, T.

AU - Lin, S. W.

AU - Mandl, F.

AU - Matsumoto, T.

AU - Miyake, H.

AU - Miyata, H.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Onuki, Y.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, H.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Satoyama, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Sidorov, V.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stanič, S.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tikhomirov, I.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Ueno, K.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Villa, S.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Won, E.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

N1 - Funding Information: We are grateful to A. Brignole and A. Rossi for enlightening discussions. We thank the KEKB group for the excellent operation of the accelerator, the KEK cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the National Institute of Informatics for valuable computing and Super-SINET network support. 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 and the Knowledge Innovation Program of the Chinese Academy of Sciences under contract No. 10575109 and IHEP-U-503; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea, the CHEP SRC program and Basic Research program (grant No. R01-2005-000-10089-0) of the Korea Science and Engineering Foundation, and the Pure Basic Research Group program of the Korea Research Foundation; the Polish State Committee for Scientific Research; the Ministry of Education and Science of the Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Research Agency; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.

PY - 2007/5/17

Y1 - 2007/5/17

N2 - We have searched for lepton-flavor-violating τ decays with a pseudoscalar meson (η, η′ and π0) using a data sample of 401 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for these decays is found and we set the following upper limits on the branching fractions: B (τ- → e- η) < 9.2 × 10-8, B (τ- → μ- η) < 6.5 × 10-8, B (τ- → e- η′) < 1.6 × 10-7, B (τ- → μ- η′) < 1.3 × 10-7, B (τ- → e- π0) < 8.0 × 10-8 and B (τ- → μ- π0) < 1.2 × 10-7 at the 90% confidence level. These results improve our previously published upper limits by factors from 2.3 to 6.3.

AB - We have searched for lepton-flavor-violating τ decays with a pseudoscalar meson (η, η′ and π0) using a data sample of 401 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No evidence for these decays is found and we set the following upper limits on the branching fractions: B (τ- → e- η) < 9.2 × 10-8, B (τ- → μ- η) < 6.5 × 10-8, B (τ- → e- η′) < 1.6 × 10-7, B (τ- → μ- η′) < 1.3 × 10-7, B (τ- → e- π0) < 8.0 × 10-8 and B (τ- → μ- π0) < 1.2 × 10-7 at the 90% confidence level. These results improve our previously published upper limits by factors from 2.3 to 6.3.

UR - http://www.scopus.com/inward/record.url?scp=34247338959&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2007.03.027

DO - 10.1016/j.physletb.2007.03.027

M3 - Article

AN - SCOPUS:34247338959

SN - 0370-2693

VL - 648

SP - 341

EP - 350

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 5-6

ER -

Search for lepton flavor violating τ^- decays into ℓ^- η, ℓ^- η^′ and ℓ^- π⁰

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