D-wave excited cscs tetraquark states with J^(PC)=1^(++)and 1^(+-)  

作　　者：杨梓衍 陈伟 Zi-Yan Yang;Wei Chen(School of Physics,Sun Yat-Sen University,Guangzhou 510275,China)

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

出　　处：《Chinese Physics C》2023年第5期82-111,共30页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(12175318);the National Key R&D Program of China(2020YFA0406400);the Natural Science Foundation of Guangdong Province of China(2022A1515011922);the Fundamental Research Funds for the Central Universities。

摘　　要：We study the mass spectra of D-wave excited cscs tetraquark states with J^(PC)=1^(++)and 1^(+-)in both symmetric 6cs@6cs and antisymmetric 3cs@3cs color configurations using the QCD sum rule method.We construct the D-wave diquark-antidiquark type of cscs tetraquark interpolating currents in various excitation structures with(L_(λ),Lp{p_(1),p_(2)})=(2,0(0,0),(1,1(1,0),(1,1(0,1),(0,2(1,1),(0,2(2,0),(0,2(0,2).Our results support the interpretation of the recently observed X(4685)resonance as a D-wave cscs tetraquark state with JPC-1++in the(2,O(0,O))or(0,2(2,O))excitation mode,although some other possible excitation structures cannot be excluded exhaustively within theoretical errors.Moreover,our results provide the mass relations 6_(ρρ)<3_(λλ)<3_(λρ)<3_(ρρ)and 6pp<3au<6aa<3pp for the positive and negative C-parity D-wave cscs tetraquarks,respectively.We suggest searching for these possible D-wave cscs tetraquarks in both the hidden-charm channels J/o and nc,as well as open-cham channes such as D_(s)D_(x)nd D_(s)D_(s1).

关 键 词：tetraquark states exotic states QCD sum rules 

分 类 号：O572.33[理学—粒子物理与原子核物理]