2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185025A new measurement of the Xi^0 mass verifies the accuracy of the Coleman-Glashow relation at the level predicted by the 1/N_c expansion. Values for other baryon isospin mass splittings are updated, and continue to agree with the 1/N_c hierarchy.6 pages, revtexHigh Energy Physics - Phenomenologytext