| Analysis of the coupling constants g_(a_0ηπ~0) and g_(a_0η’ π~0) with light-cone QCD sum rules |
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| 引用本文： | 王志刚.Analysis of the coupling constants g_(a_0ηπ~0) and g_(a_0η’ π~0) with light-cone QCD sum rules[J].中国物理 C,2010(1). |
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| 作者姓名： | 王志刚 |
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| 作者单位： | Department;Physics;North;China;Electric;Power;University; |
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| 基金项目： | Supported by NSFC (10775051);;Program for New Century Excellent Talents in University (NCET-07-0282) |
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| 摘 要： | In this article, we take the point of view that the light scalar meson a0(980) is a conventional qqstate, and calculate the coupling constants ga0ηπ0 and ga0ηπ0 with the light-cone QCD sum rules. The central value of the coupling constant ga0ηπ0 is consistent with that extracted from the radiative decay φ(1020) → a0(980)γ→ηπ0γ. The central value and lower bound of the decay width Γa0→ηπ0 =127+8448 MeV are compatible with the experimental data of the total decay width Γa0(980) = (50-100) MeV from the Particl...
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| 关 键 词： | a0（980） light-cone QCD sum rules |
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