Gluons and the eta' nucleon coupling constant

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.

10 pages, LaTeX

References in corpus (1)

• Constituent Quarks and g_1

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• Spin dependence of η meson production in proton-proton collisions close to threshold
• QCD symmetries and the eta and etaprime in nuclei
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