Threshold effects as the origin of $Y(4500)$ observed in $e^{+}{e}^{-}\to J/\psi K^{+}{K}^{-}$

Xiao-Yun Wang, Liu-Lin Wang, Xiao-Hai Liu +1

The BESIII collaboration has recently observed a resonant structure $Y(4500)$ in $e^{+}{e}^{-}\to J/\psi K^{+}{K}^{-}$, whose origin remains unresolved. In this study, we analyze the cross…