| Study of the η’→Ve~+e~- decay with hidden local symmetry model |
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| 引用本文： | 杨悦玲,黄金书,鲁公儒.Study of the η’→Ve~+e~- decay with hidden local symmetry model[J].中国物理 C,2015(2):21-25. |
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| 作者姓名： | 杨悦玲 黄金书 鲁公儒 |
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| 作者单位： | Institute of Particle and Nuclear Physics, Henan Normal University;College of Physics and Electronic Engineering, Nanyang Normal University |
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| 基金项目： | Supported by National Natural Science Foundation of China(11147008,11275057,U1332103,U1232101);Program for Science and Technology Innovation Talents in Universities of Henan Province(2012HASTIT030) |
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| 摘 要： | Within the hidden local symmetry framework, the Dalitz decay η→Ve+e-is studied with the vector meson dominance model. It is found that the partial width Γ(η→ωe+e-)≈40 e V and branching ratio B(η→ωe+e-)≈2×10-4, and Γ(η→ρe+e-)≈10Γ(η→ωe+e-) and B(η→ρe+e-)≈10B(η→ωe+e-). The maximum position of the dilepton distribution is m e+e-≈1.33 Me V. These decays are measurable with the advent of high statistic ηexperiments.
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| 关 键 词： | η’ meson VMD model decay width branching ratio |
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