Effective Weak Chiral Lagrangian from the Instanton Vacuum

Details Effective Weak Chiral Lagrangian from the Instanton Vacuum Effective Weak Chiral Lagrangian from the Instanton Vacuum

1999-07-22

arxiv.org/abs/hep-ph/9907457v1

Nucl.Phys. A663 (2000) 995-998

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, espcrc1 is used. Talk given at PANIC `99, Uppsala Sweden, June 10, 1999

Scientific paper

10.1016/S0375-9474(99)00752-6

We present in this talk the recent investigation of the effective weak chiral Lagrangian within the framework of the instanton-induced chiral quark model. The low energy constants in leading order $g_8$ and $g_{27}$, and their ratio are determined. The momentum-dependence of the constituent quark mass turns out to improve the low energy constants to the great extent, respecting the $\Delta T=1/2$ enhancement.

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