Charmed hadronic weak decays and non-factorizable contributions

A wealth of data have been obtained on charmed hadrons and their decays dur ing the last few decades. Theoretically, weak hadronic decays have posed se rious problems, as the measured quantities result from a complicated interp lay of weak and strong interactions. Earlier, it was expected that these de cays could be explained on the basis of factorizable decay mechanism. Howev er, available data For weak hadronic decays of charmed hadrons clearly dema nd nonfactorizable contributions. In this paper, the author investigates th ese contributions to exclusive weak decays of charmed mesons and baryons.