We present a new analysis of the ratio ε'/ε which measures the direct CP violation in K→ππ decays. We use the 1/Nc expansion within the framework of the effective chiral lagrangian for pseudoscalar mesons. From general counting arguments we show that the matrix element of the operator Q₆ is not protected from possible large 1/Nc corrections beyond its large-Nc or VSA value. Calculating the 1/Nc corrections, we explicitly find that they are large and positive. Our result indicates that a Delta I = 1/2 enhancement is operative for Q₆ similar to the one of Q₁ and Q₂ which dominate the CP conserving amplitude. This enhances ε'/ε and can bring the standard model prediction close to the measured value for central values of the parameters.
T. et al. (Fri,) studied this question.