Why Most Flavor Dependence Predictions for Nonleptonic Charm Decays Are Wrong. Flavor Symmetry and Final State Interactions in Nonleptonic Decays of Charmed Hadrons.

摘要

Nonleptonic weak decays of strange hadrons are complicated by the interplay of weak and strong interactions. Models based either on symmetry properties or on the selection of certain types of diagrams are both open to criticism. The symmetries used are all broken in strong interactions, and the selection of some diagrams and neglect of others is never seriously justified. Furthermore, the number of related decays of strange hadrons is small, so that experimental data are insufficient for significant tests of phenomenological models with a few free parameters. The discovery of charmed particles with many open channels for nonleptonic decays has provided a new impetus for a theoretical understanding of these processes. (ERA citation 06:019451)