Dual QCD fits to the masses of thecc¯andbb¯systems

We use the static potentials between heavy quarks derived from the classical approximation to the dual QCD field equations to calculate most of the low-lying states of the $c\overline{c}$ and $b\overline{b}$ systems. The agreement, achieved with only four parameters, two of which are roughly determined in advance, is better than 1%. The spin-orbit force cannot yet be calculated from dual QCD; if we use the Breit-Fermi form for it, all the $c\overline{c}$ and $b\overline{b}$ levels can be predicted. We also predict the masses of the lightest $c\overline{b}$ states.