Exotic fully heavy QQQQ over bar tetraquark states in 8[QQ] ⊕ 8[QQ] color configuration

被引：17
|
作者：
Wang, Qi-Nan [1 ]
Yang, Zi-Yan [1 ]
Chen, Wei [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys, Guangzhou 510275, Peoples R China
来源：
PHYSICAL REVIEW D | 2021年 / 104卷 / 11期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
SUM-RULES; QCD; PENTAQUARK; DECAYS;
D O I：
10.1103/PhysRevD.104.114037
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We have systematically calculated the mass spectra for S-wave and P-wave fully charm cc over bar cc over bar and fully bottom bb over bar bb over bar tetraquark states in the 8[Q Q over bar ] (R) 8[Q Q over bar ] color configuration, by using the moment QCD sum rule method. The masses for the fully charm cc over bar cc over bar tetraquark states are predicted about 6.3-6.5 GeV for S-wave channels and 7.0-7.2 GeV for P-wave channels. These results suggest the possibility that there are some 8[cc over bar ] (R) 8[cc over bar ] components in LHCb's di-J=psi structures. For the fully bottom bb over bar bb over bar system, their masses are calculated around 18.2 GeV for S-wave tetraquark states while 18.4-18.8 GeV for P-wave ones, which are below the eta b eta b and T(1S)T(1S) two-meson decay thresholds.
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页数：7
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