$Z_c(3900)$ as a $D{\bar{D}}^{\ast }$ molecule from the pole counting rule

Qin-Rong Gong, Zhi-Hui Guo, Ce Meng +3

A comprehensive study on the nature of the $Z_c(3900)$ resonant structure is carried out in this work. By constructing the pertinent effective Lagrangians and considering the impor…