Analyzing epsilon'/epsilon in the 1/N_c Expansion

Details Analyzing epsilon'/epsilon in the 1/N_c Expansion Analyzing epsilon'/epsilon in the 1/N_c Expansion

2000-01-11

arxiv.org/abs/hep-ph/0001088v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

One reference corrected. 5 pages, talk presented by P.H. Soldan at the 3. International Conference on B Physics and CP Violati

Scientific paper

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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