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On the Coupling of the $η$ Meson to the Nucleon

M. Kirchbach·L. Tiator
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Abstract

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

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M. Kirchbach, L. Tiator. 1996-01-04. On the Coupling of the $η$ Meson to the Nucleon. https://doi.org/10.1016/0375-9474(96)00140-6

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