Nonresonant explanation for the Y(4260) structure observed in the $e^{+}{e}^{-}\to J/\psi {\pi }^{+}{\pi }^{-}$ process

Dian-Yong Chen, Jun He, Xiang Liu

In this work, we proposed a nonresonant explanation for the Y(4260) structure observed in the $e^{+}{e}^{-}\to J/\psi {\pi }^{+}{\pi }^{-}$ process, i.e., Y(4260) is not a genuine resonance. Our result in…