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)^'/ε and the differential width asymmetry of K^± →π^± π^0 γ 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.