Pseudo-scalar heavy meson decays in covariant light front dynamics

We investigate the leptonic decay amplitude of heavy pseudo-scalar mesons a s well as the B to D transition amplitude in the heavy quark limit, using t he covariant formulation of light-front dynamics. The explicit rotational i nvariance of this formalism enables us to recover the analytic results obta ined for these processes using the Bakamjian-Thomas construction in equal t ime dynamics, in the limit of an infinitely heavy mass. The covariant formu lation provides a very convenient and coherent framework for calculating th e 1/m corrections.