Vector meson rescattering effect in understanding the threshold enhancement observed in J/ψ→γp  

作　　者：刘晓海 张远江 赵强 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences [2]Theoretical Physics Center for Science Facilities,Chinese Academy of Sciences

出　　处：《Chinese Physics C》2010年第9期1402-1404,共3页中国物理C（英文版）

基　　金：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)

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.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.

关 键 词：threshold enhancement rescattering effect final state interaction 

分 类 号：O572.33[理学—粒子物理与原子核物理]