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| 題名: | Search for double charmonium decays of the P-wave spin-triplet bottomonium states |
| 作者: | 陳鎰鋒;Shen, C. P.;Iijima, T.;Adachi, I.;Aihara, H.;Asner, D. M.;Aushev, T.;Bakich, A. M.;Bischofberger, M.;Bozek, A.;Bračko, M.;Cheon, B. G.;Chilikin, K.;Cho, I.-S.;Choi, S.-K.;Choi, Y.;Drásal, Z.;Drutskoy, A.;Eidelman, S.;Fast, J. E.;Gabyshev, N.;Garmash, A.;Goh, Y. M.;Haba, J.;Hayasaka, K.;Hayashii, H.;Hou, W.-S.;Ishikawa, A.;Itoh, R.;Iwabuchi, M.;Iwashita, T.;Julius, T.;Kang, J. H.;Kim, H. J.;Kim, J. B.;Kim, M. J.;Kim, Y. J.;Ko, B. R.;Kodyš, P.;Korpar, S.;Krokovny, P.;Kumita, T.;Li, J.;Lim, C.-L.;Liu, C.;Liu, Z. Q.;Louvot, R.;McOnie, S.;Miyabayashi, K.;Miyata, H.;Miyazaki, Y.;Mizuk, R.;Mohanty, G. B.;Moll, A.;Mori, T.;Muramatsu, N.;Nakano, E.;Nakao, M.;Nishida, S.;Nishimura, K.;Nitoh, O.;Ohshima, T.;Olsen, S. L.;Pakhlova, G.;Park, H. K.;Pedlar, T. K.;Piilonen, L. E.;Poluektov, A.;Röhrken, M.;Sahoo, H.;Sakai, Y.;Sanuki, T.;Senyo, K.;Seon, O.;Shapkin, M.;Shibata, T.-A.;Shiu, J.-G.;Singh, J. B.;Smerkol, P.;Sohn, Y.-S.;Solovieva, E.;Stanič, S.;Starič, M.;Sumiyoshi, T.;Teramoto, Y.;Tsuboyama, T.;Uchida, M.;Uehara, S.;Unno, Y.;Uno, S.;Urquijo, P.;Varner, G.;Varvell, K. E.;Wang, P.;Wang, X. L.;Watanabe, M.;Watanabe, Y.;Won, E.;Yamashita, Y.;Yusa, Y.;Zhang, Z. P. |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | Belle;FOS: Physical sciences;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);High Energy Physics - Phenomenology;High Energy Physics - Phenomenology (hep-ph);Identification;Kekb |
| 日期: | 2012-04-18 |
| 上傳時間: | 2026-04-23 13:07:12 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： Using a sample of 158 million $ (2S)$ events collected with the Belle detector, we search for the first time for double charmonium decays of the $P$-wave spin-triplet bottomonium states ($ (2S) \to _{bJ}$, $ _{bJ} \to \jpsi \jpsi$, $\jpsi \psp$, $\psp \psp$ for J=0, 1, and 2). No significant $ _{bJ}$ signal is observed in the double charmonium mass spectra, and we obtain the following upper limits, $\BR( _{bJ} \to \jpsi \jpsi)<7.1\times 10^{-5}$, $2.7\times 10^{-5}$, $4.5\times 10^{-5}$, $\BR( _{bJ} \to \jpsi \psp)<1.2\times 10^{-4}$, $1.7\times 10^{-5}$, $4.9\times 10^{-5}$, $\BR( _{bJ} \to \psp \psp)<3.1\times 10^{-5}$, $6.2\times 10^{-5}$, $1.6\times 10^{-5}$ for J=0, 1, and 2, respectively, at the 90% confidence level. These limits are significantly lower than the central values (with uncertainties of 50% to 70%) predicted using the light cone formalism but are consistent with calculations using the NRQCD factorization approach. 7 pages, 4 figures, 1 table
出版者： American Physical Society (APS)
出版日期： 2012-04-18
出處： Physical Review D, 2012-04, Vol.85 (7)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.85.071102
識別號： DOI: 10.48550/arxiv.1203.0368 |
| 顯示於類別: | [物理學系] 期刊論文
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