Baryon spectrum and the forces between quarks

Various forms of the potential between quarks in baryons, including both two-body and three-body forces, are analyzed from a theoretical and phenomenological point of view. We give arguments in favour of a long-range Logarithmic potential in baryons playing the analogous role of the the linear one in mesons. With this and a short-range Coulomb interaction a good description of the coarse structure of nonstrange baryon resonances emerges. Relativistic corrections can be consistently implemented, leading to an improved picture which only leaves the problem of spin-spin splittings coming out too small. (orig.)