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题名: Decays of J/psi and psi
作者: Li, Gang ;  Zhao, Qiang ;  Chang, Chao-Hsi
刊名: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
出版日期: 2008
卷号: 35, 期号:5, 页码:-
关键词: PARTIAL-WAVE ANALYSIS ;  RHO-PI PUZZLE ;  CHIRAL PERTURBATION-THEORY ;  POSSIBLE EXPLANATION ;  SCALAR GLUEBALL ;  ETA ;  F(0)(1500) ;  QUARKONIA ;  MASSES ;  SPIN
学科分类: Physics
通讯作者: Li, G , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
部门归属: [Li, G; Zhao, Q] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Zhao, Q] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England; [Chang, CH] CCAST, World Lab, Beijing 100080, Peoples R China; [Chang, CH] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5543
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Li, Gang,Zhao, Qiang,Chang, Chao-Hsi. Decays of J/psi and psi[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2008,35(5):-.
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