Simulating the charged charmoniumlike structure $Z_c(4025)$

Abstract

Inspired by recent observation of charged charmoniumlike structure $Z_c(4025)$, we explore the $Y(4260)\to (D^{\ast }{\bar{D}}^{\ast }{)}^{-}{\pi }^{+}$ decay through the initial-single-pion-emission mechanism, where the $D^{\ast }{\bar{D}}^{\ast }\to D^{\ast }{\bar{D}}^{\ast }$ interaction is studied by the ladder approximation including a non-interacting case. Our calculation of the differential decay width for $Y(4260)\to (D^{\ast }{\bar{D}}^{\ast }{)}^{-}{\pi }^{+}$ indicates that a charged enhancement structure around $D^{\ast }{\bar{D}}^{\ast }$ appears in the $D^{\ast }{\bar{D}}^{\ast }$ invariant mass spectrum for this process, which can correspond to newly observed $Z_c(4025)$ structure.

Comments: 5 pages, 4 figures. Title changed and more discussed added. Accepted by Eur. Phys. J. C