摘要
通过分析质心系能量为3.8~4.6 Ge V的5.1 fb-1数据,BESIII在类粲偶素(即XYZ)的研究上取得了重要成果.我们回顾了Zc的发现,X(3872)在e+e-湮灭中的产生,粲偶素ψ(13D2)的发现,以及ωχc J和ηJ/ψ过程界面的测量.
With 5. 1 fb- 1of data taken ats = 3. 8 ~ 4. 6 Ge V,BESIII made a significant contribution to the study of charmonium-like states,i. e.,the XYZ states. We review the results of observations of the Z+cstates,the X( 3872) in ee-annihilation,and charmonium ψ( 13D2) state,as well as measurements of the cross-sections of ωχc Jand ηJ / ψ.
基金
Supported by National Natural Science Foundation of China(11235011,11475187)
关键词
类粲偶素
初态辐射
奇异态
charmonium-like
initial state radiation(ISR)
exoitic
