COUPLED-CHANNEL EFFECTS IN HADRONIC TRANSITIONS IN HEAVY-QUARKONIUM SYSTEMS
文献类型：期刊论文
| 作者 | KUANG, YP; ZHOU, HY; ZHOU, HY , TSING HUA UNIV,DEPT PHYS,BEIJING 100084,PEOPLES R CHINA. |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 1991 |
| 卷号 | 44期号:3页码:756-769 |
| 关键词 | Quantum Chromodynamics Bbbar Quarkonium Decay States Model Upsilon-(3s) Spectra Ccbar Mass |
| ISSN号 | 0556-2821 |
| 英文摘要 | A systematic calculation of the coupled-channel effects in hadronic transitions in the ccBAR and bbBAR systems is given. The unitarized quark model based on the 3P0 quark-pair-creation mechanism is adopted as the coupled-channel model. The emitted pions can now be produced both from the conventional Okubo-Zweig-Iizuka- (OZI) forbidden process described by QCD multipole-gluon emissions and from the light-quark loop through an OZI-allowed process described by the quark-pair-creation model. There is interference between the two kinds of transition amplitudes. Taking the experimental values of GAMMA(psi' --> J/psi-pi-pi) and d-GAMMA(psi' --> J/psi-pi-pi)/dM(pi-pi) as inputs to determine the two unknown parameters in the theory, we predict the transition rates and M(pi-pi) distributions in the bbBAR system. The obtained rates for UPSILON' --> UPSILON-pi-pi, UPSILON" --> UPSILON-pi-pi, UPSILON" --> UPSILON'pi-pi and the distribution d-GAMMA(UPSILON' --> UPSILON-pi-pi)/dM(pi-pi) are in good agreement with the experiments. For d-GAMMA(UPSILON" --> UPSILON-pi-pi)/dM(pi-pi), the present theory does give a bigger low-M(pi-pi) distribution than the pure QCD multipole expansion does, but it is still too small to fit the CLEO data. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| 公开日期 | 2012-08-28 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/11297]  |
| 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 | ZHOU, HY , TSING HUA UNIV,DEPT PHYS,BEIJING 100084,PEOPLES R CHINA. |
| 推荐引用方式 GB/T 7714 | KUANG, YP,ZHOU, HY,ZHOU, HY , TSING HUA UNIV,DEPT PHYS,BEIJING 100084,PEOPLES R CHINA.. COUPLED-CHANNEL EFFECTS IN HADRONIC TRANSITIONS IN HEAVY-QUARKONIUM SYSTEMS[J]. PHYSICAL REVIEW D,1991,44(3):756-769. |
| APA | KUANG, YP,ZHOU, HY,&ZHOU, HY , TSING HUA UNIV,DEPT PHYS,BEIJING 100084,PEOPLES R CHINA..(1991).COUPLED-CHANNEL EFFECTS IN HADRONIC TRANSITIONS IN HEAVY-QUARKONIUM SYSTEMS.PHYSICAL REVIEW D,44(3),756-769. |
| MLA | KUANG, YP,et al."COUPLED-CHANNEL EFFECTS IN HADRONIC TRANSITIONS IN HEAVY-QUARKONIUM SYSTEMS".PHYSICAL REVIEW D 44.3(1991):756-769. |
入库方式： OAI收割
来源：理论物理研究所
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