Weak interactions of heavy quark states

This chapter extends the Cabibbo model to 6 quarks as a general framework for the weak interactions of heavy quarks. It discusses charmed quark interactions; weak interactions of the b quark; and constraining the Kobayashi-Maskawa angles. It points out that the simple spectator model is not sufficient to describe the decays of D's and F's. It suggests that a unique set of three-dimensional mixing angles may prove feasible in the near future, and indicates that the lifetimes of the D's and F's have to be improved, and the B lifetime has yet to be determined