Fully-light vector tetraquark states with explicit P-wave via QCD sum rules  

作　　者：辛琦 王志刚 Qi Xin;Zhi-Gang Wang(Department of Physics,North China Electric Power University,Baoding 071003,China;School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]Department of Physics,North China Electric Power University,Baoding 071003,China [2]School of Nuclear Science and Engineering,North China Electric Power University,Beijing 102206,China

出　　处：《Chinese Physics C》2024年第3期25-38,共14页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation (12175068);Postgraduate Students Innovative Capacity Foundation of Hebei Education Department (CXZZBS2023146)。

摘　　要：In this study,we apply the QCD sum rules to investigate the vector fully-light tetraquark states with an explicit P-wave between the diquark and antidiquark pairs.We observed that the Cγα⊗↔∂μ⊗γαC(or Cγα⊗↔Dμ⊗γαC)type current with fully-strange quarks couples potentially to a tetraquark state with a mass 2.16±0.14GeV,which supports assigning Y(2175)/ϕ(2170)as the diquark-antidiquark type tetraquark state with JPC=1−−.The qsˉqˉs and ssˉsˉs vector tetraquark states with the structure Cγμ⊗↔∂α⊗γαC+Cγα⊗↔∂α⊗γμ(or Cγμ⊗↔Dα⊗γαC+Cγα⊗↔Dα⊗γμ)are consistent with X(2200)and X(2400),respectively,which lie in the region from 2.20 to 2.40GeV.The central values of the masses of the fully-strange vector tetraquark states with an explicit P-wave are approximately 2.16−3.13GeV(or 2.16−3.16GeV).Predictions for other fully-light vector tetraquark states with and without hidden-strange are also presented.

关 键 词：fully-light tetraquark state QCD sum rules 

分 类 号：O572.33[理学—粒子物理与原子核物理]