Charm meson molecule $(c\overline{n})(n\overline{c})$ assignments for the supercharmonium state1 Z(4475) are considered, both on general grounds and in the context of specific pion-exchange models. Two possible charm molecule assignments for the ${\mathrm{J}}^{\mathrm{P}}=1^{+}$ Z(4475) are considered here, involving respectively a radially and an orbitally excited charm meson. In each assignment, a lower-mass isosinglet charm molecule state is predicted. For both the Z(4475) and the Y(4260), measurement of the ratios of the branching fractions to $\mathrm{D}\overline{\mathrm{D}}$ plus $n$ pions is recommended as a test of the nature of these states.

• Received 27 October 2014

DOI:https://doi.org/10.1103/PhysRevD.91.014004