A note on possible interpretations for the $D_{SJ}^{+}(2632)$ observed by SELEX

Abstract

We suggest some possible interpretations for the $D_{SJ}^{+}(2632)$ observed by SELEX. The $D_{SJ}^{+}(2632)$ could be the first radial excitation of the $1^{-}$ ground state ${{\mathrm{D}}_{\mathrm{s}}}^{\ast }$(2112), and its unusual decay patten might be hopefully explained by the node structure of the wave functions. In addition, the $D_{SJ}^{+}(2632)$ could also be a $c\bar{s}g$ hybrid state or a $(cs{)}_{3^{\ast }}-(\bar{s}\bar{s}{)}_3$ (diquark-antidiquark) bound state.

Comments: final version to appear in Phys. Lett. B, references added