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| 題名: | Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states |
| 作者: | 陳鎰鋒;Shen, C. P.;Aihara, H.;Asner, D. M.;Bala, A.;Bhuyan, B.;Bischofberger, M.;Bozek, A.;Bračko, M.;Chekelian, V.;Chen, A.;Chen, P.;Cheon, B. G.;Cho, I.-S.;Chobanova, V.;Danilov, M.;Dingfelder, J.;Doležal, Z.;Drásal, Z.;Drutskoy, A.;Frey, A.;Gillard, R.;Goh, Y. M.;Hayasaka, K.;Hayashii, H.;Hoshi, Y.;Hyun, H. J.;Ishikawa, A.;Itoh, R.;Julius, T.;Kah, D. H.;Kato, E.;Kawasaki, T.;Kim, H. J.;Kim, Y. J.;Klucar, J.;Kodyš, P.;Korpar, S.;Kumita, T.;Kuzmin, A.;Kwon, Y.-J.;Lee, S.-H.;Leitner, R.;Li, J.;Libby, J.;Liu, Z. Q.;Liventsev, D.;Lukin, P.;Miyata, H.;Mohanty, G. B.;Moll, A.;Mori, T.;Muramatsu, N.;Mussa, R.;Nayak, M.;Nedelkovska, E.;Ng, C.;Nishida, S.;Nitoh, O.;Okuno, S.;Ostrowicz, W.;Pakhlov, P.;Park, C. W.;Park, H. K.;Peng, T.;Petrič, M.;Piilonen, L. E.;Röhrken, M.;Rostomyan, A.;Ryu, S.;Sahoo, H.;Sandilya, S.;Santelj, L.;Sanuki, T.;Sato, Y.;Savinov, V.;Schnell, G.;Shebalin, V.;Shibata, T.-A.;Shiu, J.-G.;Smerkol, P.;Stanič, S.;Steder, M.;Tamponi, U.;Tanida, K.;Tatishvili, G.;Uchida, M.;Urquijo, P.;Vanhoefer, P.;Varner, G.;Wagner, M. N.;Wang, P.;Wang, X. L.;Watanabe, Y.;Won, E.;Yamamoto, H.;Yamaoka, J.;Yamashita, Y.;Yook, Y.;Yusa, Y.;Zhang, C. C. |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2013-07-23 |
| 上傳時間: | 2026-04-23 12:10:20 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K+π- and charge-conjugate (c.c.) states, π+π-π0π0, and π+π-π0, and to the two-body Vector-Pseudoscalar (K*(892)0K0+c.c., K*(892)-K ++c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K+π -+c.c., π+π-π0π0, and Υ(2S)→π+π-π0π0, and evidence is found for the modes Υ(1S)→π+π-π0, K*(892)0K0+c.c., and Υ(2S)→KS0K +π-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays. © 2013 American Physical Society.
出版者： American Physical Society (APS)
出版日期： 2013-07-23
出處： Physical Review D, 2013-07, Vol.88 (1)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.88.011102 |
| 顯示於類別: | [物理學系] 期刊論文
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