Reexamining radiative decays of 1(--) quarkonium into eta(
文献类型：期刊论文
| 作者 | Ma, JP ; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2002 |
| 卷号 | 65期号:9页码:- |
| 关键词 | Qcd-analysis Annihilation States |
| ISSN号 | 0556-2821 |
| 英文摘要 | Recently CLEO has studied the radiative decay of Y into eta(') and an upper limit for the decay has been determined. Confronted with this upper limit, most theoretical predictions for the decay fail. After briefly reviewing these predictions we reexamine the decay by separating the nonperturbative effect related to the quarkonium and that related to eta(') or eta, in which the latter is parametrized by distribution amplitudes of gluons in eta('). With this factorization approach we obtain theoretical predictions which are in agreement with experiment. Uncertainties in our predictions are discussed. The largest possible uncertainties are from the relativistic corrections for J/psi and the value of the charm quark mass. We argue that the effect of these uncertainties can be reduced by using quarkonium masses instead of using quark masses. An example of the reduction is shown with an attempt to explain the violation of the famous 14% rule in radiative decays of charmonia. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13526]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ma, JP,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Reexamining radiative decays of 1(--) quarkonium into eta([J]. PHYSICAL REVIEW D,2002,65(9):-. |
| APA | Ma, JP,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2002).Reexamining radiative decays of 1(--) quarkonium into eta(.PHYSICAL REVIEW D,65(9),-. |
| MLA | Ma, JP,et al."Reexamining radiative decays of 1(--) quarkonium into eta(".PHYSICAL REVIEW D 65.9(2002):-. |
入库方式： OAI收割
来源：理论物理研究所
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