Partial wave analysis and baryon resonances (in meson-baryon scattering)

This review is concerned with the analysis and interpretation of meson-baryon scattering at centre-of-mass energies of less than 2.25 GeV/c 2 or, correspondingly, laboratory momenta of less than 2.0 GeV/c. The subject primarily under discussion is that of resonances. The concept of a resonance in the context of scattering is discussed, methods of partial wave analysis are outlined and the techniques of extracting resonance information detailed. The classification of the resonances within SU(3), SU(6) and the quark model and the success of SU(3) in relating their partial widths is described.