Mesons with beauty and charm: Spectroscopy

Applying knowledge of the interaction between heavy quarks derived from the study of $c\overline{c}$ and $c\overline{b}$ bound states, we calculate the spectrum of $c\overline{b}$ mesons. We compute transition rates for the electromagnetic and hadronic cascades that lead from excited states to the ${}_{}{}^1{}_{}{}^{}S_0^{}{}_{}{}^{}$ ground state, and briefly consider the prospects for experimental observation of the spectrum.