Signature of an $h_1$ state from $J/ψ\to ηK^{*0}\bar{K}^{*0}$ and theoretical description of the $Z_c(3900)$ and $Z_c(4020)$ as $D \bar D^*$ and $D^* \bar D^*$ molecular states

Abstract

Signature of an h 1 state from J/ψ → ηK * 0 K * 0 and theoretical description of the Z c (3900) and Z c (4020) as D D * and D * D * molecular states