Suppression of PiNN* Coupling and Chiral Symmetry

Preprint

10 July 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-ph/9707307

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.

Keywords

VANISHING COUPLING
CHIRAL SYMMETRY
SYMMETRY MESON
MESON BARYON
ALGEBRAIC
PINN

All Related Versions

Version 1, 1997-07-10, ArXiv
Version 1, 1998-01-20, ArXiv (Unconfirmed version)
Published version: Physical Review Letters, 80 (3), 448.

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