中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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