arXiv:hep-ph/9905334·v1·High Energy Physics — Phenomenology
Drell-Hearn-Gerasimov Sum Rule for the Nucleon in the Large-N_c Limit
Thomas D. Cohen🇺🇸 · Xiangdong Ji🇺🇸
Abstract
We show that the Drell-Hearn-Gerasimov sum rule for the nucleon is entirely saturated by the \Delta resonance in the limit of a large number of colors, N_c \to \infty. Corrections are at relative order 1/N_c^2.
Comments: 6 pages, latex, no figures