Abstract
The Delta I=3/2, 5/2 contributions to the K to 2 pi (CP conserving) decay amplitudes due to both the virtual electromagnetic and the intrinsic Delta I=3/2 weak interaction effects are calculated. The electromagnetic contributions are calculated within a model from the pion and kaon electromagnetic mass differences and their total sum can be made finite at the physical point of the amplitudes although they are individually divergent. The Delta I=3/2 weak interaction effect is related to the coefficient of the divergent part of the pion electromagnetic mass difference. The predicted values of the total amplitudes and also that of the S-wave pi - pi phase shift ( delta 0- delta 2) are found to be in good agreement with their experimental values.
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