Relativistic corrections to Gamma exclusive decay into double S-wave charmonia
文献类型：期刊论文
| 作者 | Sang, WL; Feng, F; Chen, YQ
|
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2015 |
| 卷号 | 92期号:1页码:14025 |
| 通讯作者 | Feng, F (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
| 英文摘要 | Within the framework of nonrelativisitic QCD factorization formalism, we present the next-to-leadingorder relativistic corrections to Gamma exclusive decay into eta(c) plus J/psi. The double charmonia can be produced through several immediate channels, i.e., Gamma -> g*g*g* -> eta(c) + J/psi, g*g*gamma* -> eta(c) + J/psi, and Gamma -> gamma* -> eta(c) + J/psi. The amplitudes of these three channels are obtained accurate up to O(alpha(3)(s)v(2)), O(alpha alpha(s)(2)v(2)), and O(alpha alpha(2)(s)v(2)), respectively, where v indicates the typical heavy quark velocity in bottomonium and/or charmonium rest frame. The decay rates are also presented. We find that the next-to-leading-order relativistic corrections to the short-distance coefficients as well as the decay rates are both significant and negative, especially for the corrections from bottomonium. More seriously, the decay rates are even brought into negative by including the relativistic corrections, which indicates the poor convergence for the velocity expansion in this kind of process. Detailed analysis is given in the paper. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 关键词[WOS] | AMPLITUDES ; J/PSI |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/20920]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Sang, WL,Feng, F,Chen, YQ. Relativistic corrections to Gamma exclusive decay into double S-wave charmonia[J]. PHYSICAL REVIEW D,2015,92(1):14025. |
| APA | Sang, WL,Feng, F,&Chen, YQ.(2015).Relativistic corrections to Gamma exclusive decay into double S-wave charmonia.PHYSICAL REVIEW D,92(1),14025. |
| MLA | Sang, WL,et al."Relativistic corrections to Gamma exclusive decay into double S-wave charmonia".PHYSICAL REVIEW D 92.1(2015):14025. |
入库方式： OAI收割
来源：理论物理研究所
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