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arXiv · hep-ph/9907457

Effective Weak Chiral Lagrangian from the Instanton Vacuum

Mario Franz·Hyun-Chul Kim·Klaus Goeke
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Abstract

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 $ΔT=1/2$ enhancement.

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Mario Franz, Hyun-Chul Kim, Klaus Goeke. 1999-07-22. Effective Weak Chiral Lagrangian from the Instanton Vacuum. https://doi.org/10.1016/s0375-9474(99)00752-6

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