Reconciling experimental and lattice data of $Z_c(3900)$ in a $J/\psi \pi$-$D{\bar{D}}^{\ast }$ coupled-channel analysis

Lin-Wan Yan, Zhi-Hui Guo, Feng-Kun Guo +2

We study the $J/\psi \pi$ and $D{\bar{D}}^{\ast }$ coupled-channel system within a covariant framework. The $J/\psi \pi$ and $D{\bar{D}}^{\ast }$ invariant-mass distributions measured at 4.23~GeV and 4.26~GeV…