Threshold effects in meson-meson and meson-baryon scattering

We investigate within a genrealized meson–exchange model meson–meson and meson–baryon scattering. We concentrate our investigations on the behavior of such systems when a new particle channel opens. Specifically we demonstrate these effects at the KK‐threshold in ππ‐scattering and the KN‐threshold in πΣ–scattering.