Gluons and the eta' nucleon coupling constant

Details Gluons and the eta' nucleon coupling constant Gluons and the eta' nucleon coupling constant

1999-07-15

arxiv.org/abs/hep-ph/9907373v1

Phys.Lett. B463 (1999) 286-292

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX

Scientific paper

10.1016/S0370-2693(99)00986-7

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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