Abstract
We present results for the imaginary parts of the I = 0 and 2 K → ππ decay amplitudes, Im A 0,2, and the ratio of CP violation parameters, ϵ′/ϵ. Our calculation is done in the quenched approximation at a −1 ≈ 2 GeV, lattice size 16 3 × 32, using domain wall fermions with L s = 16. We study the three flavor case (charm is not an active flavor) and find ϵ′/ϵ is small and slightly negative.
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