Two-body open charm decays ofZ+(4430)

Abstract

The two-body open charm decays ${Z}^{+}(4430)\ensuremath{\rightarrow}{D}^{+}{\overline{D}}^{*0}$, ${D}^{*+}{\overline{D}}^{0}$, ${D}^{*+}{\overline{D}}^{*0}$ occur through the rescattering mechanism and their branching ratios are strongly suppressed if ${Z}^{+}(4430)$ is a ${D}_{1}{\overline{D}}^{*}$ molecular state. In contrast, ${Z}^{+}(4430)$ falls apart into these modes easily with large phase space and they become the main decay modes if ${Z}^{+}(4430)$ is a tetraquark state. Experimental search of these two-body open charm modes and the hidden charm mode ${\ensuremath{\chi}}_{cJ}\ensuremath{\rho}$ will help distinguish different theoretical schemes.