Orbitally Excited Baryons in Large N_c QCD
High Energy Physics - Phenomenology
2009-10-31 v1 Nuclear Theory
Abstract
We present a model-independent analysis of the mass spectrum of nonstrange l=1 baryons in large N_c QCD. The 1/N_c expansion is used to select and order a basis of effective operators that spans the nine observables (seven masses and two mixing angles). Comparison to the data provides support for the validity of the 1/N_c expansion, but also reveals that only a few nontrivial operators are strongly preferred. We show that our results have a consistent interpretation in a constituent quark model with pseudoscalar meson exchange interactions.
Keywords
Cite
@article{arxiv.hep-ph/9907412,
title = {Orbitally Excited Baryons in Large N_c QCD},
author = {Christopher D. Carone},
journal= {arXiv preprint arXiv:hep-ph/9907412},
year = {2009}
}
Comments
4 pages LaTeX. Invited parallel session talk presented at the XVth Particles and Nuclei International Conference (PANIC99), June 10, 1999, Uppsala, Sweden