Form Factors of Meson Decays in the Relativistic Constituent Quark Model

A formalism for the relativistic description of hadron decays within the constituent quark model is presented. First, hadron amplitudes of the light--cone constituent quark model, in particular the weak transition form factors at spacelike momentum transfers, $q^2\le 0$, are represented in the form of the dispersion integrals over the hadron mass. Second, the form factors at $q^2>0$ are obtained by performing the analytic continuation from the region $q^20$. Meson properties in the heavy quark limit are investigated.