Precise measurement of hadronic τ-decays with an η meson

K. Inami; T. Ohshima; H. Kaji; I. Adachi; H. Aihara; K. Arinstein; V. Aulchenko; T. Aushev; I. Bedny; V. Bhardwaj; A. Bondar; M. Bračko; T. E. Browder; M. C. Chang; Y. Chao; R. Chistov; I. S. Cho; Y. Choi; J. Dalseno; M. Dash; S. Eidelman; D. Epifanov; N. Gabyshev; B. Golob; J. Haba; K. Hara; K. Hayasaka; H. Hayashii; D. Heffernan; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; A. Ishikawa; Y. Iwasaki; D. H. Kah; J. H. Kang; T. Kawasaki; H. Kichimi; H. O. Kim; S. K. Kim; Y. I. Kim; Y. J. Kim; P. Krokovny; R. Kumar; A. Kuzmin; Y. J. Kwon; S. H. Kyeong; J. S. Lange; J. S. Lee; M. J. Lee; S. E. Lee; A. Limosani; S. W. Lin; R. Louvot; F. Mandl; S. McOnie; T. Medvedeva; K. Miyabayashi; H. Miyata; Y. Miyazaki; R. Mizuk; E. Nakano; M. Nakao; H. Nakazawa; O. Nitoh; S. Noguchi; S. Ogawa; S. Okuno; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; H. Park; H. K. Park; K. S. Park; L. S. Peak; L. E. Piilonen; A. Poluektov; Y. Sakai; O. Schneider; M. Shapkin; V. Shebalin; J. G. Shiu; B. Shwartz; J. B. Singh; S. Stanič; M. Starič; T. Sumiyoshi; M. Tanaka; G. N. Taylor; Y. Teramoto; S. Uehara; T. Uglov; S. Uno; Y. Usov; Y. Usuki; G. Varner; A. Vinokurova; C. H. Wang; P. Wang; X. L. Wang; Y. Watanabe; R. Wedd; E. Won; Y. Yamashita; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc; O. Zyukova

doi:10.1016/j.physletb.2009.01.047

Precise measurement of hadronic τ-decays with an η meson

K. Inami, T. Ohshima, H. Kaji, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, I. Bedny, V. Bhardwaj, A. Bondar, M. Bračko, T. E. Browder, M. C. Chang, Y. Chao, R. Chistov, I. S. Cho, Y. Choi, J. Dalseno, M. DashS. Eidelman, D. Epifanov, N. Gabyshev, B. Golob, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, D. Heffernan, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, Y. Iwasaki, D. H. Kah, J. H. Kang, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, A. Limosani, S. W. Lin, R. Louvot, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, E. Nakano, M. Nakao, H. Nakazawa, O. Nitoh, S. Noguchi, S. Ogawa, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, K. S. Park, L. S. Peak, L. E. Piilonen, A. Poluektov, Y. Sakai, O. Schneider, M. Shapkin, V. Shebalin, J. G. Shiu, B. Shwartz, J. B. Singh, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Uehara, T. Uglov, S. Uno, Y. Usov, Y. Usuki, G. Varner, A. Vinokurova, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

Department of Physics

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Abstract

We have studied hadronic τ decay modes involving an η meson using 490 fb^-1 of data collected with the Belle detector at the KEKB asymmetric-energy e⁺ e^- collider. The following branching fractions have been measured: B (τ^- → K^- η ν_τ) = (1.58 ± 0.05 ± 0.09) × 10^{- 4}, B (τ^- → K^- π⁰ η ν_τ) = (4.6 ± 1.1 ± 0.4) × 10^{- 5}, B (τ^- → π^- π⁰ η ν_τ) = (1.35 ± 0.03 ± 0.07) × 10^{- 3}, B (τ^- → π^- K_S⁰ η ν_τ) = (4.4 ± 0.7 ± 0.2) × 10^{- 5}, and B (τ^- → K^{* -} η ν_τ) = (1.34 ± 0.12 ± 0.09) × 10^{- 4}. These results are substantially more precise than previous measurements. The new measurements are compared with theoretical calculations based on the CVC hypothesis or the chiral perturbation theory. We also set upper limits on branching fractions for τ decays into K^- K_S⁰ η ν_τ, π^- K_S⁰ π⁰ η ν_τ, K^- η η ν_τ, π^- η η ν_τ and non-resonant K^- π⁰ η ν_τ final states.

Original language	English
Pages (from-to)	209-218
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	672
Issue number	3
DOIs	https://doi.org/10.1016/j.physletb.2009.01.047
Publication status	Published - 2009 Feb 23

Bibliographical note

Funding Information:
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 as well as Tau lepton physics research center of Nagoya University. 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 Natural Science Foundation of China under contract No. 10575109 and 10775142; 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. R01-2008-000-10477-0) of the Korea Science and Engineering 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 U.S. Department of Energy. This work is supported by a Grant-in-Aid for Science Research on Priority Area (New Development of Flavor Physics) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and Creative Scientific Research (Evolution of Tau-lepton Physics) from the Japan Society for the Promotion of Science.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2009.01.047

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Inami, K., Ohshima, T., Kaji, H., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., Bedny, I., Bhardwaj, V., Bondar, A., Bračko, M., Browder, T. E., Chang, M. C., Chao, Y., Chistov, R., Cho, I. S., Choi, Y., Dalseno, J., ... Zyukova, O. (2009). Precise measurement of hadronic τ-decays with an η meson. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 672(3), 209-218. https://doi.org/10.1016/j.physletb.2009.01.047

@article{d94eb8570b234edc9a8df3582f1c5af7,

title = "Precise measurement of hadronic τ-decays with an η meson",

abstract = "We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The following branching fractions have been measured: B (τ- → K- η ντ) = (1.58 ± 0.05 ± 0.09) × 10- 4, B (τ- → K- π0 η ντ) = (4.6 ± 1.1 ± 0.4) × 10- 5, B (τ- → π- π0 η ντ) = (1.35 ± 0.03 ± 0.07) × 10- 3, B (τ- → π- KS0 η ντ) = (4.4 ± 0.7 ± 0.2) × 10- 5, and B (τ- → K* - η ντ) = (1.34 ± 0.12 ± 0.09) × 10- 4. These results are substantially more precise than previous measurements. The new measurements are compared with theoretical calculations based on the CVC hypothesis or the chiral perturbation theory. We also set upper limits on branching fractions for τ decays into K- KS0 η ντ, π- KS0 π0 η ντ, K- η η ντ, π- η η ντ and non-resonant K- π0 η ντ final states.",

author = "K. Inami and T. Ohshima and H. Kaji and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and I. Bedny and V. Bhardwaj and A. Bondar and M. Bra{\v c}ko and Browder, {T. E.} and Chang, {M. C.} and Y. Chao and R. Chistov and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Dash and S. Eidelman and D. Epifanov and N. Gabyshev and B. Golob and J. Haba and K. Hara and K. Hayasaka and H. Hayashii and D. Heffernan and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and A. Ishikawa and Y. Iwasaki and Kah, {D. H.} and Kang, {J. H.} and T. Kawasaki and H. Kichimi and Kim, {H. O.} and Kim, {S. K.} and Kim, {Y. I.} and Kim, {Y. J.} and P. Krokovny and R. Kumar and A. Kuzmin and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {J. S.} and Lee, {M. J.} and Lee, {S. E.} and A. Limosani and Lin, {S. W.} and R. Louvot and F. Mandl and S. McOnie and T. Medvedeva and K. Miyabayashi and H. Miyata and Y. Miyazaki and R. Mizuk and E. Nakano and M. Nakao and H. Nakazawa and O. Nitoh and S. Noguchi and S. Ogawa and S. Okuno and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Park, {H. K.} and Park, {K. S.} and Peak, {L. S.} and Piilonen, {L. E.} and A. Poluektov and Y. Sakai and O. Schneider and M. Shapkin and V. Shebalin and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and S. Uehara and T. Uglov and S. Uno and Y. Usov and Y. Usuki and G. Varner and A. Vinokurova and Wang, {C. H.} and P. Wang and Wang, {X. L.} and Y. Watanabe and R. Wedd and E. Won and Y. Yamashita and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",

note = "Funding Information: 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 as well as Tau lepton physics research center of Nagoya University. 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 Natural Science Foundation of China under contract No. 10575109 and 10775142; 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. R01-2008-000-10477-0) of the Korea Science and Engineering 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 U.S. Department of Energy. This work is supported by a Grant-in-Aid for Science Research on Priority Area (New Development of Flavor Physics) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and Creative Scientific Research (Evolution of Tau-lepton Physics) from the Japan Society for the Promotion of Science.",

year = "2009",

month = feb,

day = "23",

doi = "10.1016/j.physletb.2009.01.047",

language = "English",

volume = "672",

pages = "209--218",

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

issn = "0370-2693",

publisher = "Elsevier",

number = "3",

}

Inami, K, Ohshima, T, Kaji, H, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Bedny, I, Bhardwaj, V, Bondar, A, Bračko, M, Browder, TE, Chang, MC, Chao, Y, Chistov, R, Cho, IS, Choi, Y, Dalseno, J, Dash, M, Eidelman, S, Epifanov, D, Gabyshev, N, Golob, B, Haba, J, Hara, K, Hayasaka, K, Hayashii, H, Heffernan, D, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Ishikawa, A, Iwasaki, Y, Kah, DH, Kang, JH, Kawasaki, T, Kichimi, H, Kim, HO, Kim, SK, Kim, YI, Kim, YJ, Krokovny, P, Kumar, R, Kuzmin, A, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, JS, Lee, MJ, Lee, SE, Limosani, A, Lin, SW, Louvot, R, Mandl, F, McOnie, S, Medvedeva, T, Miyabayashi, K, Miyata, H, Miyazaki, Y, Mizuk, R, Nakano, E, Nakao, M, Nakazawa, H, Nitoh, O, Noguchi, S, Ogawa, S, Okuno, S, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Park, HK, Park, KS, Peak, LS, Piilonen, LE, Poluektov, A, Sakai, Y, Schneider, O, Shapkin, M, Shebalin, V, Shiu, JG, Shwartz, B, Singh, JB, Stanič, S, Starič, M, Sumiyoshi, T, Tanaka, M, Taylor, GN, Teramoto, Y, Uehara, S, Uglov, T, Uno, S, Usov, Y, Usuki, Y, Varner, G, Vinokurova, A, Wang, CH, Wang, P, Wang, XL, Watanabe, Y, Wedd, R, Won, E, Yamashita, Y, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2009, 'Precise measurement of hadronic τ-decays with an η meson', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 672, no. 3, pp. 209-218. https://doi.org/10.1016/j.physletb.2009.01.047

TY - JOUR

T1 - Precise measurement of hadronic τ-decays with an η meson

AU - Inami, K.

AU - Ohshima, T.

AU - Kaji, H.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bedny, I.

AU - Bhardwaj, V.

AU - Bondar, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chao, Y.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Gabyshev, N.

AU - Golob, B.

AU - Haba, J.

AU - Hara, K.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Heffernan, D.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Ishikawa, A.

AU - Iwasaki, Y.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, J. S.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Limosani, A.

AU - Lin, S. W.

AU - Louvot, R.

AU - Mandl, F.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Nitoh, O.

AU - Noguchi, S.

AU - Ogawa, S.

AU - Okuno, S.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Park, K. S.

AU - Peak, L. S.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Sakai, Y.

AU - Schneider, O.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Uehara, S.

AU - Uglov, T.

AU - Uno, S.

AU - Usov, Y.

AU - Usuki, Y.

AU - Varner, G.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, E.

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

N1 - Funding Information: 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 as well as Tau lepton physics research center of Nagoya University. 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 Natural Science Foundation of China under contract No. 10575109 and 10775142; 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. R01-2008-000-10477-0) of the Korea Science and Engineering 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 U.S. Department of Energy. This work is supported by a Grant-in-Aid for Science Research on Priority Area (New Development of Flavor Physics) from the Ministry of Education, Culture, Sports, Science and Technology of Japan and Creative Scientific Research (Evolution of Tau-lepton Physics) from the Japan Society for the Promotion of Science.

PY - 2009/2/23

Y1 - 2009/2/23

N2 - We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The following branching fractions have been measured: B (τ- → K- η ντ) = (1.58 ± 0.05 ± 0.09) × 10- 4, B (τ- → K- π0 η ντ) = (4.6 ± 1.1 ± 0.4) × 10- 5, B (τ- → π- π0 η ντ) = (1.35 ± 0.03 ± 0.07) × 10- 3, B (τ- → π- KS0 η ντ) = (4.4 ± 0.7 ± 0.2) × 10- 5, and B (τ- → K* - η ντ) = (1.34 ± 0.12 ± 0.09) × 10- 4. These results are substantially more precise than previous measurements. The new measurements are compared with theoretical calculations based on the CVC hypothesis or the chiral perturbation theory. We also set upper limits on branching fractions for τ decays into K- KS0 η ντ, π- KS0 π0 η ντ, K- η η ντ, π- η η ντ and non-resonant K- π0 η ντ final states.

AB - We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The following branching fractions have been measured: B (τ- → K- η ντ) = (1.58 ± 0.05 ± 0.09) × 10- 4, B (τ- → K- π0 η ντ) = (4.6 ± 1.1 ± 0.4) × 10- 5, B (τ- → π- π0 η ντ) = (1.35 ± 0.03 ± 0.07) × 10- 3, B (τ- → π- KS0 η ντ) = (4.4 ± 0.7 ± 0.2) × 10- 5, and B (τ- → K* - η ντ) = (1.34 ± 0.12 ± 0.09) × 10- 4. These results are substantially more precise than previous measurements. The new measurements are compared with theoretical calculations based on the CVC hypothesis or the chiral perturbation theory. We also set upper limits on branching fractions for τ decays into K- KS0 η ντ, π- KS0 π0 η ντ, K- η η ντ, π- η η ντ and non-resonant K- π0 η ντ final states.

UR - http://www.scopus.com/inward/record.url?scp=59349094948&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=59349094948&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.01.047

DO - 10.1016/j.physletb.2009.01.047

M3 - Article

AN - SCOPUS:59349094948

SN - 0370-2693

VL - 672

SP - 209

EP - 218

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 - 3

ER -

Precise measurement of hadronic τ-decays with an η meson

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