arXiv:hep-ph/9911432·v1·High Energy Physics — Phenomenology
Baryon-Pion Scattering in the 1/N_c Expansion: Tree Diagram Cancellations
R. Flores-Mendieta🇺🇸 · C.P. Hofmann🇺🇸 · E. Jenkins🇺🇸
Abstract
Tree amplitudes for baryon-pion scattering are studied in the 1/N_c expansion. Generalized large-N_c consistency conditions are obtained to all orders in baryon mass splittings. For baryons with spin J ~ O(1), the leading order in N_c tree amplitudes can be evaluated keeping only terms up to a given finite order in baryon mass splittings.
Comments: 24 pages, 4 figures