Supersymmetric contributions to direct CP violation in K→ππγ decays

We analyze the supersymmetric contributions to direct–CP–violating observables in K→ππγ decays induced by gluino–mediated magnetic–penguin operators. We find that ϵ′+−γ and the differential width asymmetry of K±→π±π0γ decays could be substantially enhanced with respect to their Standard Model values, especially in the scenario where ϵ′/ϵ is dominated by supersymmetric contributions. These observables could therefore provide a useful tool to search for New Physics effects in |ΔS|=1 transitions, complementary to ϵ′/ϵ and rare decays.