K-13 transition form factors - art. no. 014032

The rainbow truncation of the quark Dyson-Schwinger equation is combined wi th the ladder Bethe-Salpeter equation for the meson bound state amplitudes and the dressed quark-W vertex in a manifestly covariant calculation of the Ki, transition form factors and decay width in the impulse approximation. With model gluon parameters previously fixed by the chiral condensate, the pion mass and decay constant, and the kaon mass, our results for the K-13 f orm factors and the kaon semileptonic decay width are in good agreement wit h the experimental data.