Instantons and the $ΔI=1/2 $ Rule

Details Instantons and the $ΔI=1/2 $ Rule Instantons and the $ΔI=1/2 $ Rule

2001-01-30

arxiv.org/abs/hep-ph/0101337v2

Phys.Rev.Lett. 87 (2001) 111601

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, Revtex; final version to appear in Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.87.111601

The instanton induced interaction leads to a significant enhancement of the
$A_0$ weak amplitude determining the $\Delta I=1/2$ rule, through the
contribution of operators with dimension d=9, as we show in the weak $K\to
\pi\pi$ decay.

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