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

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.

Automated summary

The mass spectra of fully charm and fully bottom tetraquark states were calculated in the 8[QQ overbar] (R) 8[QQ overbar] color configuration, suggesting potential components in LHCb's structures. Masses for fully charm tetraquarks were predicted around 6.3-7.2 GeV, while for fully bottom tetraquarks were calculated around 18.2-18.8 GeV, below two-meson decay thresholds.