On the Coupling of the $\eta$ Meson to the Nucleon

Abstract

The pseudoscalar and pseudovector $\eta N$ coupling constants are calculated from an effective vertex associated with the $a_0(980)\pi N$ triangle diagram. The predicted values are in agreement with the ones concluded from fitting $\eta$ photoproduction amplitudes. In this context we stress the importance of the properties of the scalar meson octet for $\eta$ meson physics.

11 pages LATEX and 2 postscript figures included in a self-extracting uufile type archive

Cited by in corpus (29)

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