Systematic study of the strong decays of the $P_c$ states and their possible isospin cousins via the QCD sum rules

Xiu-Wu Wang, Xin Li, Zhi-Gang Wang

In the present work, the strong decays of the discovered $P_c(4380)$, $P_c(4440)$, $P_c(4457)$ and their possible isospin cousins are systematically studied via the assignment that…