Productions of \sigma meson in J/\psi and \psi(2s) decays

Productions of scalar meson in the decays of J/\psi–>\omega+\sigma, J/\psi–>\gamma+\sigma and \psi(2s)–>\omega+\sigma, \gamma+\sigma and ee^+ annihilations in the regions of J/\psi and \psi(2s) are studied.