Analysis of new results for scalar-isoscalar ππ phase shifts

The scalar–isoscalar ππ phase shifts are analysed using a separable potential model of three coupled channels (ππ, KK and an effective 2π2π system). Model parameters are fitted to two sets of solutions obtained in a recent analysis of the CERN-Cracow-Munich measurements of the π−p↑−π+π−n reaction on a polarized target. A relatively narrow (90–180 MeV) scalar resonance f0(1400–1460) is found, together with a wide f0(500) (Γ≈500 MeV) and the narrow f0(980) state.