Isospin Splitting in the Baryon Octet and Decuplet

Abstract

Baryon mass splittings are analyzed in terms of a simple model with general pairwise interactions. At present, the $\Delta$ masses are poorly known from experiments. Improvement of these data would provide an opportunity to make a significant test of our understanding of electromagnetic and quark-mass contributions to hadronic masses. The problem of determining resonance masses from scattering and production data is discussed.

Comments: 9 pages, LATEX inc. 2 LATEX "pictures", CMU-HEP91-24-R92