$O(p^6)$ extension of the large--$N_C$ partial wave dispersion relations

Continuing our previous work(JHEP 0706:030,2007), large–$N_C$ techniques and partial wave dispersion relations are used to discuss $\pi \pi$ scattering amplitudes. We get a set of predictions for $O(p^6)$ low-energy chiral perturbation theory couplings. They are provided in terms of the masses and decay widths of scalar and vector mesons.