1/N_c Corrections in Meson-Baryon Scattering
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
Corrections to meson/ground-state baryon scattering amplitudes in the 1/N_c expansion of QCD have previously been shown to be controlled by the t-channel difference |I_t - J_t| of isospin and angular momentum and by the change of hypercharge Y_t. Here we derive the corresponding expressions in the original scattering s channel, allowing for nonzero meson spin and nontrivial SU(3) flavor quantum numbers, and provide explicit examples of the crossing relevant for pi N --> rho N and K N scattering.
Keywords
Cite
@article{arxiv.hep-ph/0612267,
title = {1/N_c Corrections in Meson-Baryon Scattering},
author = {Herry J. Kwee and Richard F. Lebed},
journal= {arXiv preprint arXiv:hep-ph/0612267},
year = {2008}
}
Comments
Addition of a physical example, minor changes to clarify certain issues and add one reference. 18 pages, no figures