Weak decays of charmed particles

This paper reports on the decay rates of charmed particles which are generally understood from weak interaction theory. However, the detailed predictions for exclusive channels depend crucially on the quantitative treatment of effects due to strong interactions. Recent experimental measurements strengthen the basis for current models of charm decay but also pose new challenges for the prediction of form factors in semi-leptonic decays, for branching fractions of charmed mesons to many bodies and for the lifetime and decay modes of the charmed baryons