On the Rare K → πl+l− Decays

In this talk, we present our recent work [1] on the decays in a combined framework of chiral perturbation theory and Large-Nc QCD under the dominance of a minimal narrow resonance structure. The proposed description reproduces very well the experimental Br(K+ → π0e+e−) and Br(Ks → π0e0e−). Predictions for the K → π μ+μ− modes are also obtained and we can conclude to the constructive type for the interference between the direct and indirect CP-violation amplitudes in KL → π0e+e−.