Chiral Multiplets of Large-N Ground State Baryons
High Energy Physics - Phenomenology
2009-12-30 v1
Abstract
I show that in the large-N limit the ground state baryons with helicity h fall into an ((N-2h)/4,(N+2h)/4) irreducible representation of SU(2)XSU(2). This representation determines the absolute normalization of the ground state baryon axial vector couplings at large-N. Results map precisely to (spin-flavor) SU(4) results. For instance, I find g_A =(N+2)/3. As a consequence of this multiplet structure, chiral symmetry forbids pion transitions between the ground state baryons and other baryon towers in the large-N limit.
Keywords
Cite
@article{arxiv.hep-ph/9809328,
title = {Chiral Multiplets of Large-N Ground State Baryons},
author = {Silas R. Beane},
journal= {arXiv preprint arXiv:hep-ph/9809328},
year = {2009}
}
Comments
6 pages TeX and mtexsis.tex