The $Y(4230)$ as a $D_1 \bar{D}$ molecule

Abstract

We show that the currently available data are consistent with $Y(4230)$ being a $D_1 \bar{D}$ hadronic molecule. By a simultaneous fit to data from $e^+ e^- \rightarrow D^0 D^{* -} \pi^+,\: J/\psi \pi^+ \pi^-,\: J/\psi K^+ K^-,\: h_c \pi^+ \pi^-,\: J/\psi \eta,\: \chi_{c0} \omega,\: \chi_{c1}(3872) \gamma$ and $\mu^+ \mu^-$, we demonstrate that this single state can explain the experimental signals in the mass range from $4.2$ to $4.35\, \rm{GeV}.$