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arXiv · hep-ph/0208250

Axial Vector Current and Coupling of the Quark in the Instanton Model

G. W. Carter
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Abstract

We compute the axial vector current, form factor, and coupling for quarks in the instanton liquid model with two light flavors. Non-local current corrections are derived, as required by the effective 't Hooft interaction. We obtain a pion-mediated axial form factor and an axial coupling which, when simply applied in the non-relativistic limit for constituent quarks, matches the experimental value to within a few percent, both in and out of the chiral limit.

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G. W. Carter. 2002-09-04. Axial Vector Current and Coupling of the Quark in the Instanton Model. https://doi.org/10.1103/physrevd.67.014008

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