Hadron spectroscopy with covariant Coulomb and confining interactions

Using a Bethe-Salpeter approach to gluon exchange and confining h.o. interactions in q anti q and qqq systems, an FKR-like differential equation is derived for both in a Wick-rotated four-dimensional space, yielding an exact spectrum for mesons and a very similar one for baryons. The Coulomb term exhibits a 20% effect on the low-lying energy levels and gives rise to a more consistent determination of the h.o. spring constant at the standard value 1 GeV2 than otherwise. (orig.)