Exotic D_(s)^(*)D^(*) molecular states and scqc tetraquark states with J^(P)=0^(+),1^(+),2^(+)  

作　　者：Qi-Nan Wang Wei Chen Hua-Xing Chen 王齐男;陈伟;陈华星(School of Physics,Sun Yat-Sen University,Guangzhou 510275,China;School of Physics,Southeast University,Nanjing 210094,China)

机构地区：[1]School of Physics,Sun Yat-Sen University,Guangzhou 510275,China [2]School of Physics,Southeast University,Nanjing 210094,China

出　　处：《Chinese Physics C》2021年第9期28-43,共16页中国物理C（英文版）

基　　金：Supported in part by National Key R&D Program of China under Contracts No.2020YFA0406400;the National Natural Science Foundation of China(11722540,12075019);the Fundamental Research Funds for the Central Universities。

摘　　要：We have calculated the mass spectra for the D_(s)^(*)D^(*) molecular states and scqc tetraquark states with J^(P)=0^(+),1^(+),2^(+).The masses of the axial-vector D_(s)^(*)D^(*),D_(s)^(*)D molecular states and 1_([sc])㊉0_([qc]),0_([sc])©1_([qc])tetraquark states are predicted to be approximately 3.98 GeV,in good agreement with the mass of Z_(cs)(3985)^(-)from BE-SIII.In both the molecular and diquark-antidiquark scenarios,our results suggest that there may exist two almost degenerate states,as the strange partners of X(3872)and Z_(c)(3900).We propose to carefully examine Z_(cs)(3985)in future experiments to verify this.One may also search for more hidden-charm four-quark states with strangeness in not only the open-charm D_(s)^(*)D^(*) channels but also the hidden-charm channels η_(c)K/K^(*),J/ψK/K^(*).

关 键 词：molecular state exotic state QCD sum rules 

分 类 号：O572.33[理学—粒子物理与原子核物理]