Semileptonic π and K decays and the chiral anomaly at one-loop

We calculate the O(p⁶) corrections to the anomalous form factors appearing in π⁺, K⁺ --> e⁺νγ, μ⁺νγ and K₁₄ decays in chiral perturbation theory. The relevant dimension 6 terms of the lagrangian are evaluated assuming their saturation by the vector meson contribution.