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arXiv · hep-ph/9907373

Gluons and the eta' nucleon coupling constant

Steven D. Bass
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Abstract

We derive the effective chiral Lagrangian for low energy eta--nucleon and eta'--nucleon interactions and show that gluonic degrees of freedom, via the axial anomaly, induce a contact term in the pp -> pp eta and pp -> pp eta' reactions. We then discuss the consequences for the extraction of g_{eta'NN} from experimental data.

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Steven D. Bass. 1999-07-15. Gluons and the eta' nucleon coupling constant. https://doi.org/10.1016/s0370-2693(99)00986-7

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