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Analyzing epsilon'/epsilon in the 1/N_c Expansion

T. Hambye·G. O. Koehler·E. A. Paschos·P. H. Soldan
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Abstract

We present a recent analysis of epsilon'/epsilon in the 1/N_c expansion. We show that the 1/N_c corrections to the matrix element of Q_6 are large and positive, indicating a Delta I=1/2 enhancement similar to the one of Q_1 and Q_2 which dominate the CP conserving amplitude. This enhances the CP ratio and can bring the standard model prediction close to the measured value for central values of the parameters.

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T. Hambye, G. O. Koehler, E. A. Paschos, P. H. Soldan. 2000-01-21. Analyzing epsilon'/epsilon in the 1/N_c Expansion. https://doi.org/10.1142/9789812791870_0052

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