Excited Baryons Phenomenology from Large-$N_c$ QCD
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
We present a phenomenological analysis of the strong couplings of the negative-parity L=1 baryons from the perspective of the large- expansion. In the large- limit the mass spectrum and mixing pattern of these states are constrained in a very specific way. The mixing angles are completely determined in this limit, with predictions in good agreement with experiment. In the combined large- and SU(3) limits the pion couplings of the five negative-parity octets to the ground state baryons are given in terms of only 3 independent couplings. The large- predictions for the ratios of strong couplings are tested against experimental data.
Cite
@article{arxiv.hep-ph/9711201,
title = {Excited Baryons Phenomenology from Large-$N_c$ QCD},
author = {Dan Pirjol and Tung-Mow Yan},
journal= {arXiv preprint arXiv:hep-ph/9711201},
year = {2009}
}
Comments
15 pages, REVTeX