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| 題名: | Observation of exclusive Υ(1S) and Υ(2S) decays into light hadrons |
| 作者: | 陳鎰鋒;Shen, C. P.;Iijima, T.;Adachi, I.;Aihara, H.;Aushev, T.;Bakich, A. M.;Bay, A.;Bhuyan, B.;Bischofberger, M.;Bračko, M.;Chang, M.-C.;Chang, P.;Chen, P.;Cheon, B. G.;Chistov, R.;Cho, K.;Choi, S.-K.;Choi, Y.;Dalseno, J.;Doležal, Z.;Drásal, Z.;Eidelman, S.;Fast, J. E.;Goh, Y. M.;Golob, B.;Haba, J.;Horii, Y.;Hoshi, Y.;Hou, W.-S.;Inami, K.;Ishikawa, A.;Itoh, R.;Iwasaki, Y.;Iwashita, T.;Kang, J. H.;Kiesling, C.;Kim, H. O.;Kim, J. B.;Kim, J. H.;Kinoshita, K.;Koblitz, S.;Korpar, S.;Kouzes, R. T.;Križan, P.;Kumar, R.;Kumita, T.;Kwon, Y.-J.;Li, J.;Libby, J.;Liu, Z. Q.;Louvot, R.;McOnie, S.;Miyabayashi, K.;Mohanty, G. B.;Mohapatra, D.;Moll, A.;Muramatsu, N.;Nakano, E.;Natkaniec, Z.;Nishimura, K.;Nitoh, O.;Ogawa, S.;Ohshima, T.;Okuno, S.;Olsen, S. L.;Pakhlova, G.;Park, C. W.;Park, H.;Park, H. K.;Pedlar, T. K.;Pestotnik, R.;Petrič, M.;Piilonen, L. E.;Ritter, M.;Sahoo, H.;Sanuki, T.;Sato, Y.;Schneider, O.;Schwanda, C.;Shapkin, M.;Shiu, J.-G.;Shwartz, B.;Sibidanov, A.;Simon, F.;Smerkol, P.;Sohn, Y.-S.;Sokolov, A.;Starič, M.;Sumiyoshi, T.;Tatishvili, G.;Teramoto, Y.;Uchida, M.;Usov, Y.;Varner, G.;Wang, P.;Wang, X. L.;Watanabe, M.;Won, E.;Zhang, C. C.;Zhilich, V. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | ddc:530;info:eu-repo/classification/ddc/530;Physics |
| 日期: | 2012-08-15 |
| 上傳時間: | 2026-04-23 12:33:53 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： Using samples of 102 x 10(6) Gamma(1S) and 158 x 10(6) Gamma(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states phi K+K-, omega pi(+)pi(-) and K*(0)(892)K-pi(+), and to the two-body Vector-Tensor states (phi f'(2)(1525), omega f(2)(1270), rho a(2)(1320) and K*(0)(892)(K) over bar*(0)(2)(1430)) and Axial-vector-Pseudoscalar (K-1(1270)K-+(-), K-1(1400)K-+(-) and b(1)(1235)(+)pi(-)) states. Signals are observed for the first time in the Y(1S) -> phi K+K-, omega pi(+)pi(-), K*K-0(-)pi(+), K*K-0*(0)(2) Gamma(2S) -> phi K+K-, K*K-0(-)pi(+) decay modes. Branching fractions are determined for all the processes, while 90% confidence level upper limits are established on the branching fractions for the modes with a statistical significance less than 3 sigma. The ratios of the branching fractions of Gamma(2S) and Gamma(1S) decays into the same final state are used to test a perturbative QCD prediction for OZI-suppressed bottomonium decays.
出版者： American Physical Society (APS)
出版日期： 2012-08-15
出處： Physical Review D, 2012-08, Vol.86 (3)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.86.031102 |
| 顯示於類別: | [物理學系] 期刊論文
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