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| 題名: | Inclusive and exclusive measurements of B decays to χc1 and χc2 at Belle |
| 作者: | 陳鎰鋒;Miyabayashi, K;Arinstein, K;Aushev, T;Ayad, R;Babu, V;Badhrees, I;Bakich, A. M;Bala, A;Bansal, V;Barberio, E;Bhuyan, B;Biswal, J;Bobrov, A;Bondar, A;Bozek, A;Červenkov, D;Cheon, B. G;Chilikin, K;Choi, S.-K;Dutta, D;Eidelman, S;Ferber, T;Gaur, V;Gabyshev, N;Ganguly, S;Goh, Y. M;Greenwald, D;Haba, J;Hamer, P;Hayasaka, K;He, X. H;Hou, W.-S;Ishikawa, A;Itoh, R;Jaegle, I;Joffe, D;Joo, K. K;Julius, T;Katrenko, P;Kim, D. Y;Kim, J. B;Kim, M. J;Kim, S. H;Kim, Y. J;Kobayashi, N;KriŽan, P;Krokovny, P;Kuhr, T;Kumar, R;Kuzmin, A;Li, Y;Li Gioi, L;Liventsev, D;Loos, A;Masuda, M;Mussa, R;Nakano, E;Nakao, M;Nanut, T;Nishida, S;Pal, B;Park, C. W;Park, H;Pedlar, T. K;Petrič, M;Pulvermacher, C;Rauch, J;RibeŽl, E;Rostomyan, A;Sahoo, H;Santelj, L;Sanuki, T;Seino, Y;Senyo, K;Sevior, M. E;Shebalin, V;Shen, C. P;Simon, F;Sohn, Y.-S;Sokolov, A;Solovieva, E;Stypula, J;Sumihama, M;Tamponi, U;Uehara, S;Unno, Y;Uno, S;Urquijo, P;Vanhoefer, P;Vinokurova, A;Vorobyev, V;Wang, X. L;Watanabe, M;Watanabe, Y;Wehle, S;Ye, H;Yook, Y;Zhang, Z. P;Zhilich, V;Zupanc, A |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | B+ --> chi/c1 pi+ pi- K;B+ --> chi/c2 pi+ pi- K;B0 --> chi/c1 pi+ pi- K0(S);B0 --> chi/c1 pi0 pi- K;B0 --> chi/c2 K;B: branching ratio: measured;B: decay modes;B: hadronic decay;B: pair production;BELLE;chi mesons: hadroproduction;chi/c1: hadronic decay;chi/c2: hadronic decay;ddc:530;electron positron: annihilation;experimental results;High Energy Physics - Experiment;info:eu-repo/classification/ddc/530;KEK-B;Physics;Upsilon;X |
| 日期: | 2016-03-29 |
| 上傳時間: | 2026-04-23 12:04:04 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We report inclusive and exclusive measurements for $\chi_{c1}$ and $\chi_{c2}$ production in $B$ decays. We measure $\mathcal{B}(B \to \chi_{c1} X)$= $(3.03 \pm 0.05(\mbox{stat}) \pm 0.24(\mbox{syst})) \times 10^{-3}$ and $\mathcal{B}(B \to \chi_{c2} X)$= $(0.70 \pm 0.06(\mbox{stat}) \pm 0.10(\mbox{syst})) \times 10^{-3}$. For the first time, $\chi_{c2}$ production in exclusive $B$ decays in the modes $B^0 \to \chi_{c2}\pi^- K^+$ and $B^+ \to \chi_{c2} \pi^+ \pi^- K^+$ has been observed, along with first evidence for the $B^+ \to \chi_{c2} \pi^+ K_S^0$ decay mode. For $\chi_{c1}$ production, we report the first observation in the $B^+ \to \chi_{c1} \pi^+ \pi^- K^+$, $B^0 \to \chi_{c1} \pi^+ \pi^- K_S^0$ and $B^0 \to \chi_{c1} \pi^0 \pi^- K^+$ decay modes. Using these decay modes, we observe a difference in the production mechanism of $\chi_{c2}$ in comparison to $\chi_{c1}$ in $B$ decays. In addition, we report searches for $X(3872)$ and $\chi_{c1}(2P)$ in the $B^+ \to (\chi_{c1} \pi^+ \pi^-) K^+$ decay mode. The reported results use $772 \times 10^{6}$ $B\overline{B}$ events collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Comment: 14 Pages, 8 Figures,4 Tables; Published in PRD 93, 052016 (2016)
出版者： American Physical Society (APS)
出版日期： 2016-03-29
出處： Physical Review D, 2016-03, Vol.93
識別號： ISSN: 2470-0010
識別號： EISSN: 2470-0029
識別號： DOI: 10.1103/physrevd.93.052016 |
| 顯示於類別: | [物理學系] 期刊論文
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