Drell-Hearn-Gerasimov Sum Rule for the Nucleon in the Large-N_c Limit
arXiv:hep-ph/9905334 · doi:10.1016/S0370-2693(00)00038-1
Abstract
We show that the Drell-Hearn-Gerasimov sum rule for the nucleon is entirely saturated by the Δresonance in the limit of a large number of colors, N_c \to \infty. Corrections are at relative order 1/N_c^2.
6 pages, latex, no figures