CHIRAL SYMMETRY AND THE LARGE-NC LIMIT IN KL4 DECAYS

The treatment of kaon decays using chiral symmetry yields predictions for the form factors in K --> pi-pi-e-upsilon. In addition, the large-N(c) limit of QCD implies that a particular combination of low-energy constants should be suppressed. We present the chiral predictions for K(l4) decays at next-to-leading order in the energy expansion. By combining the phenomenologies of K(l4) and pi-pi-scattering, we test these predictions and provide a determination of the parameters in the chiral Lagrangian of QCD.