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Decays of J/psi and psi' into vector and pseudoscalar mesons and the pseudoscalar glueball-q(q)over-bar mixing
李刚,赵强; Li, G; Zhao, Q; Chang, CH
2008
发表期刊JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
卷号35期号:5页码:55002
通讯作者[Li, Gang ; Zhao, Qiang] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhao, Qiang] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England ; [Chang, Chao-Hsi] CCAST, World Lab, Beijing 100080, Peoples R China ; [Chang, Chao-Hsi] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
摘要We introduce a parametrization scheme for J/psi(psi')-> VP where the effects of SU( 3) flavor symmetry breaking and doubly OZI- rule violation ( DOZI) can be parametrized by certain parameters with explicit physical interpretations. This scheme can be used to clarify the glueball - q (q) over bar mixing within the pseudoscalar mesons. We also include the contributions from the electromagnetic ( EM) decays of J/psi and psi' via J/psi(psi')-> gamma* -> VP. Via study of the isospin violated channels, such as J/psi(psi')->rho eta,rho eta', omega pi degrees and phi pi degrees, reasonable constraints on the EM decay contributions are obtained. With up- to- date experimental data for J/psi(psi')-> VP, J/psi(psi')->gamma P and P ->gamma gamma, etc, we arrive at a consistent description of the mentioned processes with a minimal set of parameters. As a consequence, we find that there exists an overall suppression of the psi' -> 3g form factors, which sheds some light on the long- standing 'rho pi puzzle'. By determining the glueball components inside the pseudoscalar eta and eta' in three different glueball - q (q) over bar mixing schemes, we deduce that the lowest pseudoscalar glueball, if it exists, has a rather small q (q) over bar component, and it makes eta( 1405) a preferable candidate for a 0(-+) glueball.
文章类型Article
学科领域Physics
研究领域[WOS]Physics
DOI10.1088/0954-3899/35/5/055002
URL查看原文
语种英语
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000255097200004
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240685
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
李刚,赵强,Li, G,Zhao, Q,et al. Decays of J/psi and psi' into vector and pseudoscalar mesons and the pseudoscalar glueball-q(q)over-bar mixing[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2008,35(5):55002.
APA 李刚,赵强,Li, G,Zhao, Q,&Chang, CH.(2008).Decays of J/psi and psi' into vector and pseudoscalar mesons and the pseudoscalar glueball-q(q)over-bar mixing.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,35(5),55002.
MLA 李刚,赵强,et al."Decays of J/psi and psi' into vector and pseudoscalar mesons and the pseudoscalar glueball-q(q)over-bar mixing".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 35.5(2008):55002.
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