Comment on "Suppression of piNN* Coupling and Chiral Symmetry"
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
Jido, Oka and Hosaka have shown that the p-slash gamma_5 piece of the pion-to-vacuum correlator of two baryon interpolating fields vanishes in the soft-pion limit, as a consequence of chiral transformation properties of those fields. This is a statement about the particular combination of pion-baryon couplings and subtraction terms that corresponds to the chosen interpolating fields. It does not imply that the physical piNN* coupling of the N(1535) is suppressed.
Cite
@article{arxiv.hep-ph/9801413,
title = {Comment on "Suppression of piNN* Coupling and Chiral Symmetry"},
author = {Michael C. Birse},
journal= {arXiv preprint arXiv:hep-ph/9801413},
year = {2007}
}
Comments
1 page (RevTeX), comment on Phys. Rev. Lett. 80 (1998) 448, hep-ph/9707307; more explicit arguments added