# Violation Of The $ΔI = 1/2$ Rule In $D \to ππ$ Decays

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A strong violation of the $\displaystyle{\Delta I = {1\over 2}}$ rule has experimentally been found in the $\displaystyle{D \to \pi\pi}$ decays [1]. In this letter we will show that the order of magnitude of this violation can be understood in terms of the pure quantum chromo dynamics corrections to the weak interactions.