Final State Interactions in Kaon Decays Revisited
Masayuki Uehara
Abstract
We examine effects of final state interactions (FSI) in kaon decays using a new scheme without the Omnes function, and show that while Delta I=1/2 rule is impossible to be explained in terms of FSI alone, ε'/ε 16.5× 10-4 is obtained through FSI, if the calculation is concerned only with the CP-violating parts. The pi-pi contribution to the mL-mS mass difference is shown to be about 0.14, if the sizes of the CP conserving amplitudes A0 and A2 are correctly given.
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