Symmetry patterns in the $(N,\Delta )$ spectrum

Abstract

We revise the role played by symmetry in the study of the low-lying baryon spectrum and comment on the difficulties when trying to generalize the symmetry pattern to higher energy states. We show that for the $(N,\Delta )$ part such a generalization is plausible allowing the identification of spectral regularities and the prediction of until now non-identified resonances.

Comments: 4 pages, Talk given at the 18th International Conference on Few-Body Problems in Physics, August 21-26 2006, Santos, Sao Paulo, Brazil