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[en] The phenomenological description of the broad scalar resonances compatible with chiral symmetry and unitarity is discussed within the linear σ model. In is shown that the naive consideration of the decay widths in the scalar meson propagators is not an adequate approximation for the physical amplitudes. In particular, the K+ → π+π-e+ν and Ks → ππ decays are treated within the linear σ model with due account of the unitarity. 35 refs., 2 figs
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