Light quark loops in $K^{\pm }\to \ddot{I}{€}^{\pm }\hat{I}½\bar{\hat{I}}½$ from vector meson dominance and update on the Kaon Unitarity Triangle

E. Lunghi, A. Soni

We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay $K^{\pm }\to \ddot{I}{€}^{\pm }\hat{I}½\bar{\hat{I}}½$ stemming from matrix elements involv…