  We study whether the broad peak X(1576) observed by BES Collaboration arises
from the final state interaction effect of $\rho(1450,1700)$ decays. The
interference effect could produce an enhancement around 1540 MeV in the
$K^+K^-$ spectrum with typical interference phases. However, the branching
ratio $B[J/\psi\to \pi^{0}\rho(1450,1700)]\cdot B[\rho(1450,1700)\to
K^{+}K^{-}]$ from the final state interaction effect is far less than the
experimental data.

High Energy Physics - Phenomenology;High Energy Physics - Experiment