The dispersive contribution of $\rho (1450,1700)$ decays and X(1576)

Bo Zhang, Xiang Liu, Shi-Lin Zhu

We study whether the broad enhancement X(1576) arises from the final state interaction (FSI) of $\rho (1450,1700)\to {\rho }^{+}{\rho }^{-}\to K^{+}{K}^{-}$ decays. We consider both the absorptive and d…