2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44411This talk gives a short summary of some work \cite{FGEdeR04} realized in collaboration with E. de Rafael and concerning $K\raπ\ell^+ \ell^-$ decays, in a combined framework of Chiral Perturbation Theory and Large--$N\_c$ QCD under the dominance of a minimal narrow resonance structure.5 pages, 1 figure. To appear in the proceedings of the XXXXth Rencontres de Moriond: QCD and high energy hadronic interactionsHigh Energy Physics - Phenomenologytext