| Use of Dispersion Relations in ππ and KK^- Coupled-Channel System |
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| 作者姓名： | XIAO Zhi-Guang ZHENG Han-Qing |
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| 作者单位： | Department of Physics, Peking University, Beijing 100871, China |
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| 基金项目： | The project supported in part by National Natural Science Foundation of China under Grant No. 19775005 Acknowledgment one of the authors （H.Q. Zheng） would like to thank professor Chuan-Rong Wang in FuZhou University for helpful discussions. |
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| 摘 要： | Systematic and careful studies are made on the properties of the IJ =00 7rTr and KK^- coupled-channel system, using newly derived dispersion relations between the phase shifts and poles and cuts. The effects of nearby branch point singularities to the determination of the fo（980） resonance are estimated and discussed.
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| 关 键 词： | 耦合信道系统 ππ散射 色散关系 相转移 |
| 收稿时间： | 2006-10-31 |
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