| Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γp |
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| 作者姓名： | 刘晓海 张远江 赵强 |
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| 作者单位： | Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | Supported by National Natural Science Foundation of China （10675131 10491306）; Chinese Academy of Sciences （KJCX3-SYW-N2）; Ministry of Science and Technology of China （2009CB825200） |
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| 摘 要： | We propose one possible mechanism,i.e.,the vector meson （VV） rescattering effects,to interpret the near threshold narrow enhancement observed in J/ψ → γpp.The estimate indicates that these effects can give sizeable contributions to this channel,and a destructive interference between different rescattering amplitudes is required to reproduce the line shape of the data.
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| 关 键 词： | 矢量介子 增强效应 门槛 大肠杆菌 数据线 破坏性 估计 |
| 收稿时间： | 2010-01-27 |
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