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Decays of J/psi and psi
Li, Gang; Zhao, Qiang; Chang, Chao-Hsi; Li, G , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
2008
发表期刊JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
ISSN0954-3899
卷号35期号:5页码:-
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.
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
关键词Partial-wave Analysis Rho-pi Puzzle Chiral Perturbation-theory Possible Explanation Scalar Glueball Eta f(0)(1500) Quarkonia Masses Spin
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5543
专题理论物理所SCI论文
通讯作者Li, G , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
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GB/T 7714
Li, Gang,Zhao, Qiang,Chang, Chao-Hsi,et al. Decays of J/psi and psi[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2008,35(5):-.
APA Li, Gang,Zhao, Qiang,Chang, Chao-Hsi,&Li, G , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.(2008).Decays of J/psi and psi.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,35(5),-.
MLA Li, Gang,et al."Decays of J/psi and psi".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 35.5(2008):-.
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