The eta' and the topological charge density

Details The eta' and the topological charge density The eta' and the topological charge density

2000-02-15

arxiv.org/abs/hep-ph/0002165v1

Eur.Phys.J. A7 (2000) 255-259

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

We compare two different frameworks which have been proposed to include the
eta' in chiral perturbation theory. The equivalence of these two approaches is
shown both for the purely mesonic case and in the presence of the ground state
baryon octet. The relation between the different sets of parameters in both
Lagrangians is clarified.

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