Estimating the mass of the hidden charm $1^{+}(1^{+})$ tetraquark state via QCD sum rules

Cong-Feng Qiao, Liang Tang

By using QCD sum rules, the mass of the hidden charm tetraquark $[cu][\bar{c}\bar{d}]$ state with $I^G(J^P)=1^{+}(1^{+})$ (HCTV) is estimated, which presumably will turn out…