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 eV and branching ratio β(η′→ωe+e−) ≈ 2×10−4, and Γ(η′→ρe+e−) ≈ 10Γ(η′→ωe+e−) and β(η′→ρe+e−) ≈ 10β(η′→ωe+e−). The maximum position of the dilepton distribution is me+e− ≈1.33 MeV. These decays are measurable with the advent of high statistic η′ experiments.
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"title": "Study of the \u03b7\u2032\u2192Ve+e\u2212 decay with hidden local symmetry modelSupported by National Natural Science Foundation of China (11147008, 11275057, U1332103, U1232101) and Program for Science and Technology Innovation Talents in Universities of Henan Province (2012HASTIT030)"
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"year": 2015
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"source": "Institute of Physics Publishing/Chinese Academy of Sciences",
"value": "Within the hidden local symmetry framework, the Dalitz decay \u03b7\u2032\u2192Ve+e\u2212 is studied with the vector meson dominance model. It is found that the partial width \u0393(\u03b7\u2032\u2192\u03c9e+e\u2212) \u2248 40 eV and branching ratio \u03b2(\u03b7\u2032\u2192\u03c9e+e\u2212) \u2248 2\u00d710\u22124, and \u0393(\u03b7\u2032\u2192\u03c1e+e\u2212) \u2248 10\u0393(\u03b7\u2032\u2192\u03c9e+e\u2212) and \u03b2(\u03b7\u2032\u2192\u03c1e+e\u2212) \u2248 10\u03b2(\u03b7\u2032\u2192\u03c9e+e\u2212). The maximum position of the dilepton distribution is me+e\u2212 \u22481.33 MeV. These decays are measurable with the advent of high statistic \u03b7\u2032 experiments."
}
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"imprints": [
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"date": "2015-02-20",
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