Analysis of the $$QQ\bar{Q}\bar{Q}$$ Q Q Q ¯ Q ¯ tetraquark states with QCD sum rules

Zhi-Gang Wang
2017 European Physical Journal C: Particles and Fields  
In this article, we study the J^PC=0^++ and 2^++ QQQ̅Q̅ tetraquark states with the QCD sum rules, and obtain the predictions M_X(ccc̅c̅,0^++) =5.99±0.08 GeV, M_X(ccc̅c̅,2^++) =6.09±0.08 GeV, M_X(bbb̅b̅,0^++) =18.84±0.09 GeV and M_X(bbb̅b̅,2^++)=18.85±0.09 GeV, which can be confronted to the experimental data in the future. Furthermore, we illustrate that the diquark-antidiquark type tetraquark state can be taken as a special superposition of a series of meson-meson pairs and embodies the net effects.
doi:10.1140/epjc/s10052-017-4997-0 fatcat:qul66l4trrcfde3za567rpvdf4