Low-Energy QCD: Chiral Coefficients, UA(1)-Breaking and the Quark-Quark Interaction

Details Low-Energy QCD: Chiral Coefficients, UA(1)-Breaking and the Quark-Quark Interaction Low-Energy QCD: Chiral Coefficients, UA(1)-Breaking and the Quark-Quark Interaction

1996-06-25

arxiv.org/abs/hep-ph/9606430v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contributed Paper at PANIC 96, 2 pages, LATEX, uses sprocl.sty and axodraw.sty

Scientific paper

A detailed investigation of the low-energy chiral expansion is presented within a model truncation of QCD. The model dependence of the chiral coefficients is tested for several forms of the quark-quark interaction by varying the form of the running coupling in the infrared region. Furthermore we demonstrate how the UA(1)$ anomaly and a mass for the eta' can arise in this approach.

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