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

Simulating the charged charmoniumlike structure $Z_c(4025)$