## Resonance saturation of the chiral couplings at next-to-leading order in 1/N{sub C}

The precision obtainable in phenomenological applications of chiral perturbation theory is currently limited by our lack of knowledge on the low-energy constants (LECs). The assumption that the most important contributions to the LECs come from the dynamics of the low-lying resonances, often referred to as the resonance saturation hypothesis, has stimulated the use of large-N{sub C} resonance Lagrangians in order to obtain explicit values for the LECs. We study the validity of the resonance saturation assumption at the next-to-leading order in the 1/N{sub C} expansion within the framework of resonance chiral theory. We find that, by imposing QCD short-distance constraints,more »