Decay widths of Z_(cs)(3985/4000)based on rigorous quark-hadron duality  

作　　者：Zhi-Gang Wang 王志刚(Department of Physics,North China Electric Power University,Baoding 071003,China)

机构地区：[1]Department of Physics,North China Electric Power University,Baoding 071003,China

出　　处：《Chinese Physics C》2022年第10期89-97,共9页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(12175068)。

摘　　要：In this study,we explore the hadronic coupling constants G_(ZJ/ψK),G_(Zη_(c))K^(*),and G_(ZD*D_(s)) of the exotic states Z_(cs)(3985/4000)within the pictures of both the tetraquark and molecular states with the tentative assignments J^(PC)=1^(+-)based on rigorous quark-hadron duality.Subsequently,we obtain the total widthsΓ_(Z_(cs))^(T)=15.31±2.06 MeV and Γ_(Z_(cs))^(M)=83.51±21.09 Mev,which are consistent with experimental values from the BESⅢ collaboration,13.8_(-5.2)^(+8.1)±4.9 MeV,and LHCb collaboration,131±15±26 MeV,respectively,and support assigning Z_(cs)(3985)and Z_(cs)(4000)as the hidden-charm tetraquark and molecular states with J^(PC)=1^(+-),respectively.

关 键 词：tetraquark state QCD sum rules 

分 类 号：O572.33[理学—粒子物理与原子核物理]