eta b decay into charmonium in association with c(c)over-bar pair
文献类型：期刊论文
| 作者 | Li, BQ; Li R(李荣); He ZG(何志国); Li, R ; He, ZG
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| 刊名 | CHINESE PHYSICS C
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| 出版日期 | 2010 |
| 卷号 | 34期号:5页码:521-527 |
| 关键词 | eta b decay associate production non-relativistic QCD |
| 通讯作者 | [Li Bai-Qing] Peking Univ, Dept Phys, Beijing 100871, Peoples R China ; [Li Bai-Qing] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China ; [Li Bai-Qing] Huzhou Teachers Coll, Dept Phys, Huzhou 313000, Peoples R China ; [Li Rong ; He Zhi-Guo] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Li Rong ; He Zhi-Guo] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China |
| 英文摘要 | We calculate the inclusive decay rates of rib into charmonium via double c (c) over bar pairs for S- and P-wave states eta c, J/Psi and XcJ within the framework of non-relativistic QCD (NRQCD) factorization at leading order in a. Besides calculating the contributions of the color-singlet channels eta(b)-> c (c) over bar (-)[S-2S+1(L)(1)]+c (c) over bar the effects of c (c) over bar pair) in the color-octet configurations are also considered. We find that eta b -> c (c) over bar (-)[S-3(1)(8)]+c (c) over bar make a small contribution to Br(eta b -> J/Psi(eta(c))+c (c) over bar). While in the eta(b)-> xcJ+c (c) over bar case, the color octet contributions are significant, for they are of the same alpha(4)(s)upsilon(5)(c) order as the color-singlet processes. We predict Br(eta(b)-> J/Psi)(eta(c))+c (c) over bar) = 2.99(2.75) x 10(-5) for S-wave states J/Psi) and eta(c), and Br(eta(b)-> c(c)over bar> (4.37, 3.40, 2.83) x 1.0(-5) (for J= 0, 1, 2) for P-wave states x,i. In the end, we also find Br(eta(b)-> c (c) over bar) is almost saturated by rib decay into charmonium in association with a; pair from the point of view of duality. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000277294100001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237809]  |
| 专题 | 高能物理研究所_理论物理室 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Li, BQ,Li R,He ZG,et al. eta b decay into charmonium in association with c(c)over-bar pair[J]. CHINESE PHYSICS C,2010,34(5):521-527. |
| APA | Li, BQ,李荣,何志国,Li, R,&He, ZG.(2010).eta b decay into charmonium in association with c(c)over-bar pair.CHINESE PHYSICS C,34(5),521-527. |
| MLA | Li, BQ,et al."eta b decay into charmonium in association with c(c)over-bar pair".CHINESE PHYSICS C 34.5(2010):521-527. |
入库方式： OAI收割
来源：高能物理研究所
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