Analysis of two-body decays of charm mesons using the quark-diagram scheme

Abstract

Two-body decays of charm mesons are analyzed in the quark-diagram scheme. Effects of SU(3) breaking and final-state interactions are included in the formulation. Various theoretical models are reviewed and tested. In this scheme, the experimental observation of $D^0$→K¯ ${}_{}{}^0{}_{}{}^{}\phi$ gives a clear signal of the W-exchange diagram. The difference in the lifetimes of $D^{+}$, $D^0$, and $F^{+}$ is studied in terms of two-body decays.