Radiative decays J/ψ → η(')γ in perturbative QCD |
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作者姓名: | 金丹 杨亚东 |
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作者单位: | 1. Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China;;2. Key Laboratory of Quark & Lepton Physics, Ministry of Education, Wuhan 430079, China |
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基金项目: | Supported by National Natural Science Foundation of China (10735080,11075059) |
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摘 要: | With the recent investigations of the g*g*-η(') transition form factor and η-η' mixing scheme, we present an updated study of the radiative decays J/ψ → η(')γ in perturbative QCD. The decays are taken as a test ground for the g*g*-η(') transition form factors and the η-η' mixing scheme. The form factors are found to be working for glunic η' production and the mixing angle is constrained to be φ=35.1°±0.8°.
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关 键 词: | transition form factor η-η radiative decays |
收稿时间: | 2010-10-08 |
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