中文摘要：

基于不同实验组给出的J/ψ,ψ（2S）→VP的分支比,我们对赝标量介子η和η′混合的可能性进行了研究.发现如果只计及夸克组元,拟合给出的混合角分别为（-14.04±2.37）°和（-11.99±10.46）°;而如果η和η′同时含有胶子组分,则η可能只有轻的夸克组成,η′中的胶子组分可能为Zη2′=0.30±0.24.

英文摘要：

Based on the branching fractions of J/ψ,ψ（2S） → VP from different experiments,the mixing of η and η′ is extensively discussed with a well established phenomenological model.The mixing angle is determined to be（-14.04±2.37）° and（-11.99±10.46）°,by fitting to the new world average if only quark content is considered.After taking into account the gluonic content in η and η′ simultaneously,the investigation shows that η favors only consist of light quarks,while the gluonic content of η′ is Z2η′= 0.30±0.24.