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 & 92 others 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, Eunil Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

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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 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- KS 0 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- KS 0 η ντ, π- KS 0 π0 η ντ, K- η η ντ, π- η η ντ and non-resonant K- π0 η ντ final states.

Original languageEnglish
Pages (from-to)209-218
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume672
Issue number3
DOIs
Publication statusPublished - 2009 Feb 23

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mesons
decay
perturbation theory
detectors
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Precise measurement of hadronic τ-decays with an η meson. / 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.; Dash, M.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Golob, B.; Haba, J.; Hara, K.; Hayasaka, K.; Hayashii, H.; Heffernan, D.; Hoshi, Y.; Hou, W. S.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Iwasaki, Y.; Kah, D. H.; Kang, J. H.; Kawasaki, T.; Kichimi, H.; Kim, H. O.; Kim, S. K.; Kim, Y. I.; Kim, Y. J.; Krokovny, P.; Kumar, R.; Kuzmin, A.; Kwon, Y. J.; Kyeong, S. H.; Lange, J. S.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Limosani, A.; Lin, S. W.; 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, C. W.; Park, H.; Park, H. K.; Park, K. S.; Peak, L. S.; Piilonen, L. E.; Poluektov, A.; Sakai, Y.; Schneider, O.; Shapkin, M.; Shebalin, V.; Shiu, J. G.; Shwartz, B.; Singh, J. B.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Uehara, S.; Uglov, T.; Uno, S.; Usov, Y.; Usuki, Y.; Varner, G.; Vinokurova, A.; Wang, C. H.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Won, Eunil; Yamashita, Y.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 672, No. 3, 23.02.2009, p. 209-218.

Research output: Contribution to journalArticle

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
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. ; Dash, M. ; Eidelman, S. ; Epifanov, D. ; Gabyshev, N. ; Golob, B. ; Haba, J. ; Hara, K. ; Hayasaka, K. ; Hayashii, H. ; Heffernan, D. ; Hoshi, Y. ; Hou, W. S. ; Hyun, H. J. ; Iijima, T. ; Ishikawa, A. ; Iwasaki, Y. ; Kah, D. H. ; Kang, J. H. ; Kawasaki, T. ; Kichimi, H. ; Kim, H. O. ; Kim, S. K. ; Kim, Y. I. ; Kim, Y. J. ; Krokovny, P. ; Kumar, R. ; Kuzmin, A. ; Kwon, Y. J. ; Kyeong, S. H. ; Lange, J. S. ; Lee, J. S. ; Lee, M. J. ; Lee, S. E. ; Limosani, A. ; Lin, S. W. ; 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, C. W. ; Park, H. ; Park, H. K. ; Park, K. S. ; Peak, L. S. ; Piilonen, L. E. ; Poluektov, A. ; Sakai, Y. ; Schneider, O. ; Shapkin, M. ; Shebalin, V. ; Shiu, J. G. ; Shwartz, B. ; Singh, J. B. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Uehara, S. ; Uglov, T. ; Uno, S. ; Usov, Y. ; Usuki, Y. ; Varner, G. ; Vinokurova, A. ; Wang, C. H. ; Wang, P. ; Wang, X. L. ; Watanabe, Y. ; Wedd, R. ; Won, Eunil ; Yamashita, Y. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. ; Zyukova, O. / Precise measurement of hadronic τ-decays with an η meson. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2009 ; Vol. 672, No. 3. pp. 209-218.
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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- KS 0 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- KS 0 η ντ, π- KS 0 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. Bračko 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. Stanič and M. Starič 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 Eunil Won and Y. Yamashita and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",
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month = "2",
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language = "English",
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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, Eunil

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

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- KS 0 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- KS 0 η ντ, π- KS 0 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- KS 0 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- KS 0 η ντ, π- KS 0 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

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U2 - 10.1016/j.physletb.2009.01.047

DO - 10.1016/j.physletb.2009.01.047

M3 - Article

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

SN - 0370-2693

IS - 3

ER -