Suppression of PiNN* Coupling and Chiral Symmetry
High Energy Physics - Phenomenology
2009-10-30 v1 Nuclear Theory
Abstract
Meson-baryon couplings between positive and negative parity baryons are investigated using two point correlation functions in the soft meson limit. We find that the pi NN^* coupling vanishes due to chiral symmetry, while the eta NN^* coupling remains finite. We perform an analysis based on the algebraic method for SU(2) and SU(3) chiral symmetry, and find that baryon axial charges play an essential role for vanishing coupling constants.
Cite
@article{arxiv.hep-ph/9707307,
title = {Suppression of PiNN* Coupling and Chiral Symmetry},
author = {D. Jido and M. Oka and A. Hosaka},
journal= {arXiv preprint arXiv:hep-ph/9707307},
year = {2009}
}
Comments
7pp, LaTeX