Instantons and the Delta I=1/2 Rule
classification
✦ hep-ph
keywords
deltaruleweakamplitudecontributiondecaydeterminingdimension
read the original abstract
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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