π-π Interaction Amplitudes with Chiral Constraints(§2. ππ/Kπ Scattering,Possible Existence of the σ-Meson and Its Implications to Hadron Physics)

Abstract

The ππ interaction amplitudes have been calculated using a three coupled channel model both with and without constraints imposed by chiral models. Roy's equations have been used to compare the amplitudes and to study the role played by chiral constraints in the ππ interaction.