| QCD Axial Anomaly Enhances the ηη' Decay of the Hybrid Candidate η1（1855） |
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| 引用本文： | 陈华星,苏妞,朱世琳.QCD Axial Anomaly Enhances the ηη' Decay of the Hybrid Candidate η1（1855）[J].中国物理快报,2022(5):51-57. |
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| 作者姓名： | 陈华星 苏妞 朱世琳 |
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| 作者单位： | 1. School of Physics, Southeast University;2. School of Physics and Center of High Energy Physics, Peking University |
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| 基金项目： | supported by the National Natural Science Foundation of China (Grant Nos. 12075019,11975033, and 12070131001)；;the Fundamental Research Funds for the Central Universities； |
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| 摘 要： | We study the hybrid mesons with the exotic quantum number IGJPG=0+1-+ and investigate their decays into the ηη’,a1（1260）π,f1（1285）η,f1（1420）η,K*（892）■,K1（1270）■,and K1（1400）■channels.It is found that the QCD axial anomaly enhances the decay width of the ηη’ channel although this mode is strongly suppressed by the small p-wave phase space.Our results support the interpretation of the η
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