Baryon-Pion Couplings from Large-N QCD
High Energy Physics - Phenomenology
2009-10-22 v1
Abstract
We derive a set of consistency conditions for the pion-baryon coupling constants in the large-N limit of QCD. The consistency conditions have a unique solution which are precisely the values for the pion-baryon coupling constants in the Skyrme model. We also prove that non-relativistic spin-flavor symmetry (where is the number of light flavors) is a symmetry of the baryon-pion couplings in the large-N limit of QCD. The symmetry breaking corrections to the pion-baryon couplings vanish to first order in . Consistency conditions for other couplings, such as the magnetic moments are also derived.
Cite
@article{arxiv.hep-ph/9307241,
title = {Baryon-Pion Couplings from Large-N QCD},
author = {Roger Dashen and Aneesh V. Manohar},
journal= {arXiv preprint arXiv:hep-ph/9307241},
year = {2009}
}
Comments
(12 pages, 2 figs, uses harvmac and uufiles), UCSD/PTH 93-16