| Radiative Decays of Charmonium into Light Mesons |
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| 作者姓名： | 高颖佳 张玉洁 赵光达 |
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| 作者单位： | Department of Physics, Peking University, Beijing 100871 |
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| 基金项目： | Supported in part by the National Natural Science Foundation of China under Grant No 10421503, and the Key Grant Project of the Ministry of Education of China under Grant No 305001. |
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| 摘 要： | We apply perturbative QCD to the radiative decays of charmonia J/ψ and χcJ into light mesons. We perform a complete numerical calculation for the quark-gluon loop diagrams involved in these processes. The calculated J/ψ decay branching ratios into p-wave mesons f2（1270） and f1（1285） fit the data well, while that of fo（980） （if treated as an ss meson） is predicted to be 1.6×10^-4, which implies that f0（1710） can not be the ss or （uu＋dd）/√2 meson. Decays of p-wave charmonia χcJ→ρ（ω;φ）γ （J = 0, 1, 2） are also studied, and the branching ratio of χc1→ργ is predicted to be 1.4×10^-5, which may be tested by CLEO-c collaboration and BESlg collaboration with future experiments.
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| 关 键 词： | 辐射衰减 光介子 完全数字计算 夸克-胶子环图 数据阱 |
| 收稿时间： | 2006-06-19 |
| 修稿时间： | 2006-06-19 |
Radiative Decays of Charmonium into Light Mesons |
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| GAO Ying-Jia, ZHANG Yu-Jie, CHAO Kuang-Ta.Radiative Decays of Charmonium into Light Mesons[J].Chinese Physics Letters,2006,23(9):2376-2378. |
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| Authors: | GAO Ying-Jia ZHANG Yu-Jie CHAO Kuang-Ta |
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