Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons

Y. Miyazaki; H. Aihara; K. Arinstein; V. Aulchenko; T. Aushev; A. M. Bakich; V. Balagura; E. Barberio; A. Bay; K. Belous; V. Bhardwaj; M. Bischofberger; A. Bondar; M. Bračko; T. E. Browder; P. Chang; A. Chen; B. G. Cheon; I. S. Cho; Y. Choi; J. Dalseno; M. Dash; W. Dungel; S. Eidelman; D. Epifanov; M. Feindt; N. Gabyshev; A. Garmash; P. Goldenzweig; H. Ha; J. Haba; K. Hara; Y. Hasegawa; K. Hayasaka; H. Hayashii; Y. Horii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; R. Itoh; M. Iwasaki; Y. Iwasaki; T. Julius; D. H. Kah; J. H. Kang; H. Kawai; T. Kawasaki; H. O. Kim; J. H. Kim; S. K. Kim; Y. I. Kim; Y. J. Kim; B. R. Ko; S. Korpar; P. Križan; P. Krokovny; R. Kumar; T. Kumita; A. Kuzmin; Y. J. Kwon; S. H. Kyeong; S. H. Lee; T. Lesiak; J. Li; C. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; K. Miyabayashi; H. Miyata; T. Nagamine; Y. Nagasaka; E. Nakano; M. Nakao; S. Nishida; K. Nishimura; O. Nitoh; T. Ohshima; S. Okuno; S. L. Olsen; P. Pakhlov; G. Pakhlova; H. Palka; C. W. Park; H. Park; H. K. Park; R. Pestotnik; L. E. Piilonen; A. Poluektov; Y. Sakai; O. Schneider; C. Schwanda; K. Senyo; M. Shapkin; V. Shebalin; J. G. Shiu; B. Shwartz; A. Sokolov; E. Solovieva; S. Stanič; M. Starič; T. Sumiyoshi; G. N. Taylor; Y. Teramoto; I. Tikhomirov; S. Uehara; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; A. Vinokurova; C. H. Wang; P. Wang; Y. Watanabe; R. Wedd; E. Won; B. D. Yabsley; Y. Yamashita; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc; O. Zyukova

doi:10.1016/j.physletb.2009.11.061

Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons

Y. Miyazaki, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, M. Bračko, T. E. Browder, P. Chang, A. Chen, B. G. Cheon, I. S. Cho, Y. ChoiJ. Dalseno, M. Dash, W. Dungel, S. Eidelman, D. Epifanov, M. Feindt, N. Gabyshev, A. Garmash, P. Goldenzweig, H. Ha, J. Haba, K. Hara, Y. Hasegawa, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwasaki, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. O. Kim, J. H. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, B. R. Ko, S. Korpar, P. Križan, P. Krokovny, R. Kumar, T. Kumita, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, S. H. Lee, T. Lesiak, J. Li, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, K. Nishimura, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. Shapkin, V. Shebalin, J. G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

Department of Physics

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17 Citations (Scopus)

Abstract

We search for lepton flavor and lepton number violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h, h^′ = π^± or K^±), τ^- → ℓ^- h⁺ h^{′ -} and τ^- → ℓ⁺ h^- h^{′ -}, using 671 fb^-1 of data collected with the Belle detector at the KEKB asymmetric-energy e⁺ e^- collider. We obtain 90% C.L. upper limits on the branching fractions in the range (4.4 - 8.8) × 10^{- 8} for τ → e h h^′, and (3.3 - 16) × 10^{- 8} for τ → μ h h^′ processes. These results improve upon previously published upper limits by factors between 1.6 to 8.8.

Original language	English
Pages (from-to)	355-362
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	682
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2009.11.061
Publication status	Published - 2010 Jan 4

Bibliographical note

Funding Information:
We are grateful to M.J. Herrero for stimulating 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 SINET3 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan , the Japan Society for the Promotion of Science (JSPS) , and the Tau-Lepton Physics Research Center of Nagoya University ; the Australian Research Council and the Australian Department of Industry, Innovation, Science and Research ; the National Natural Science Foundation of China under contract Nos. 10575109 , 10775142 , 10875115 and 10825524 ; the Department of Science and Technology of India ; the BK21 and WCU program of the Ministry Education Science and Technology , the CHEP SRC program and Basic Research program (grant No. R01-2008-000-10477-0 ) of the Korea Science and Engineering Foundation , Korea Research Foundation ( KRF-2008-313-C00177 ), and the Korea Institute of Science and Technology Information ; the Polish Ministry of Science and Higher Education ; 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 . This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area (“New Development of Flavor Physics”), and from JSPS for Creative Scientific Research (“Evolution of Tau-lepton Physics”).

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2009.11.061

Cite this

Miyazaki, Y., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Belous, K., Bhardwaj, V., Bischofberger, M., Bondar, A., Bračko, M., Browder, T. E., Chang, P., Chen, A., Cheon, B. G., Cho, I. S., ... Zyukova, O. (2010). Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 682(4-5), 355-362. https://doi.org/10.1016/j.physletb.2009.11.061

@article{982bf59394244fbb8b2b91941b56aed6,

title = "Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons",

abstract = "We search for lepton flavor and lepton number violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h, h′ = π± or K±), τ- → ℓ- h+ h′ - and τ- → ℓ+ h- h′ -, using 671 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We obtain 90% C.L. upper limits on the branching fractions in the range (4.4 - 8.8) × 10- 8 for τ → e h h′, and (3.3 - 16) × 10- 8 for τ → μ h h′ processes. These results improve upon previously published upper limits by factors between 1.6 to 8.8.",

author = "Y. Miyazaki and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and Bakich, {A. M.} and V. Balagura and E. Barberio and A. Bay and K. Belous and V. Bhardwaj and M. Bischofberger and A. Bondar and M. Bra{\v c}ko and Browder, {T. E.} and P. Chang and A. Chen and Cheon, {B. G.} and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Dash and W. Dungel and S. Eidelman and D. Epifanov and M. Feindt and N. Gabyshev and A. Garmash and P. Goldenzweig and H. Ha and J. Haba and K. Hara and Y. Hasegawa and K. Hayasaka and H. Hayashii and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and R. Itoh and M. Iwasaki and Y. Iwasaki and T. Julius and Kah, {D. H.} and Kang, {J. H.} and H. Kawai and T. Kawasaki and Kim, {H. O.} and Kim, {J. H.} and Kim, {S. K.} and Kim, {Y. I.} and Kim, {Y. J.} and Ko, {B. R.} and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kumar and T. Kumita and A. Kuzmin and Kwon, {Y. J.} and Kyeong, {S. H.} and Lee, {S. H.} and T. Lesiak and J. Li and C. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and K. Miyabayashi and H. Miyata and T. Nagamine and Y. Nagasaka and E. Nakano and M. Nakao and S. Nishida and K. Nishimura and O. Nitoh and T. Ohshima and S. Okuno and Olsen, {S. L.} and P. Pakhlov and G. Pakhlova and H. Palka and Park, {C. W.} and H. Park and Park, {H. K.} and R. Pestotnik and Piilonen, {L. E.} and A. Poluektov and Y. Sakai and O. Schneider and C. Schwanda and K. Senyo and M. Shapkin and V. Shebalin and Shiu, {J. G.} and B. Shwartz and A. Sokolov and E. Solovieva and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and Taylor, {G. N.} and Y. Teramoto and I. Tikhomirov and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and A. Vinokurova and Wang, {C. H.} and P. Wang and Y. Watanabe and R. Wedd and E. Won and Yabsley, {B. D.} and Y. Yamashita and Y. Yusa and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",

note = "Funding Information: We are grateful to M.J. Herrero for stimulating 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 SINET3 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan , the Japan Society for the Promotion of Science (JSPS) , and the Tau-Lepton Physics Research Center of Nagoya University ; the Australian Research Council and the Australian Department of Industry, Innovation, Science and Research ; the National Natural Science Foundation of China under contract Nos. 10575109 , 10775142 , 10875115 and 10825524 ; the Department of Science and Technology of India ; the BK21 and WCU program of the Ministry Education Science and Technology , the CHEP SRC program and Basic Research program (grant No. R01-2008-000-10477-0 ) of the Korea Science and Engineering Foundation , Korea Research Foundation ( KRF-2008-313-C00177 ), and the Korea Institute of Science and Technology Information ; the Polish Ministry of Science and Higher Education ; 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 . This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area (“New Development of Flavor Physics”), and from JSPS for Creative Scientific Research (“Evolution of Tau-lepton Physics”).",

year = "2010",

month = jan,

day = "4",

doi = "10.1016/j.physletb.2009.11.061",

language = "English",

volume = "682",

pages = "355--362",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "4-5",

}

Miyazaki, Y, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Bakich, AM, Balagura, V, Barberio, E, Bay, A, Belous, K, Bhardwaj, V, Bischofberger, M, Bondar, A, Bračko, M, Browder, TE, Chang, P, Chen, A, Cheon, BG, Cho, IS, Choi, Y, Dalseno, J, Dash, M, Dungel, W, Eidelman, S, Epifanov, D, Feindt, M, Gabyshev, N, Garmash, A, Goldenzweig, P, Ha, H, Haba, J, Hara, K, Hasegawa, Y, Hayasaka, K, Hayashii, H, Horii, Y, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Itoh, R, Iwasaki, M, Iwasaki, Y, Julius, T, Kah, DH, Kang, JH, Kawai, H, Kawasaki, T, Kim, HO, Kim, JH, Kim, SK, Kim, YI, Kim, YJ, Ko, BR, Korpar, S, Križan, P, Krokovny, P, Kumar, R, Kumita, T, Kuzmin, A, Kwon, YJ, Kyeong, SH, Lee, SH, Lesiak, T, Li, J, Liu, C, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Miyabayashi, K, Miyata, H, Nagamine, T, Nagasaka, Y, Nakano, E, Nakao, M, Nishida, S, Nishimura, K, Nitoh, O, Ohshima, T, Okuno, S, Olsen, SL, Pakhlov, P, Pakhlova, G, Palka, H, Park, CW, Park, H, Park, HK, Pestotnik, R, Piilonen, LE, Poluektov, A, Sakai, Y, Schneider, O, Schwanda, C, Senyo, K, Shapkin, M, Shebalin, V, Shiu, JG, Shwartz, B, Sokolov, A, Solovieva, E, Stanič, S, Starič, M, Sumiyoshi, T, Taylor, GN, Teramoto, Y, Tikhomirov, I, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Vinokurova, A, Wang, CH, Wang, P, Watanabe, Y, Wedd, R, Won, E, Yabsley, BD, Yamashita, Y, Yusa, Y, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2010, 'Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 682, no. 4-5, pp. 355-362. https://doi.org/10.1016/j.physletb.2009.11.061

TY - JOUR

T1 - Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons

AU - Miyazaki, Y.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Bay, A.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, P.

AU - Chen, A.

AU - Cheon, B. G.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Dungel, W.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Feindt, M.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Goldenzweig, P.

AU - Ha, H.

AU - Haba, J.

AU - Hara, K.

AU - Hasegawa, Y.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Julius, T.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kim, H. O.

AU - Kim, J. H.

AU - Kim, S. K.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Ko, B. R.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lee, S. H.

AU - Lesiak, T.

AU - Li, J.

AU - Liu, C.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nishimura, K.

AU - Nitoh, O.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schwanda, C.

AU - Senyo, K.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tikhomirov, I.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

N1 - Funding Information: We are grateful to M.J. Herrero for stimulating 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 SINET3 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan , the Japan Society for the Promotion of Science (JSPS) , and the Tau-Lepton Physics Research Center of Nagoya University ; the Australian Research Council and the Australian Department of Industry, Innovation, Science and Research ; the National Natural Science Foundation of China under contract Nos. 10575109 , 10775142 , 10875115 and 10825524 ; the Department of Science and Technology of India ; the BK21 and WCU program of the Ministry Education Science and Technology , the CHEP SRC program and Basic Research program (grant No. R01-2008-000-10477-0 ) of the Korea Science and Engineering Foundation , Korea Research Foundation ( KRF-2008-313-C00177 ), and the Korea Institute of Science and Technology Information ; the Polish Ministry of Science and Higher Education ; 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 . This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area (“New Development of Flavor Physics”), and from JSPS for Creative Scientific Research (“Evolution of Tau-lepton Physics”).

PY - 2010/1/4

Y1 - 2010/1/4

N2 - We search for lepton flavor and lepton number violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h, h′ = π± or K±), τ- → ℓ- h+ h′ - and τ- → ℓ+ h- h′ -, using 671 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We obtain 90% C.L. upper limits on the branching fractions in the range (4.4 - 8.8) × 10- 8 for τ → e h h′, and (3.3 - 16) × 10- 8 for τ → μ h h′ processes. These results improve upon previously published upper limits by factors between 1.6 to 8.8.

AB - We search for lepton flavor and lepton number violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h, h′ = π± or K±), τ- → ℓ- h+ h′ - and τ- → ℓ+ h- h′ -, using 671 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We obtain 90% C.L. upper limits on the branching fractions in the range (4.4 - 8.8) × 10- 8 for τ → e h h′, and (3.3 - 16) × 10- 8 for τ → μ h h′ processes. These results improve upon previously published upper limits by factors between 1.6 to 8.8.

UR - http://www.scopus.com/inward/record.url?scp=72049096614&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=72049096614&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.11.061

DO - 10.1016/j.physletb.2009.11.061

M3 - Article

AN - SCOPUS:72049096614

SN - 0370-2693

VL - 682

SP - 355

EP - 362

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 - 4-5

ER -

Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons

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