Improved Effective Action for Light Quarks Beyond Chiral Limit

Details Improved Effective Action for Light Quarks Beyond Chiral Limit Improved Effective Action for Light Quarks Beyond Chiral Limit

1998-10-08

arxiv.org/abs/hep-ph/9810295v5

Eur.Phys.J.C9:235-243,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 1 figure, Latex. New references were added

Scientific paper

10.1007/s100529900017

We propose an improvement of the Diakonov-Petrov Effective Action on the basis of the Lee-Bardeen results for the quark determinant in the instanton field. This Improved Effective Action provides proper account of the current quark masses, which is particularly important for strange quarks. This Action is successfully tested by the calculations of the quark condensate, the masses of the pseudoscalar meson octet and by axial-anomaly low-energy theorems.

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