$D^{\ast }{\bar{D}}^{\ast }$ molecule interpretation of $Z_c(4025)$

Wei Chen, T. G. Steele, Meng-Lin Du +1

We have used QCD sum rules to study the newly observed charged state $Z_c(4025)$ as a hidden-charm $D^{\ast }{\bar{D}}^{\ast }$ molecular state with the quantum numbers $I^G(J^P)=1^{+}(1^{+})$. U…