Analyzing epsilon'/epsilon in the 1/N_c Expansion
High Energy Physics - Phenomenology
2016-11-23 v2
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.
Keywords
Cite
@article{arxiv.hep-ph/0001088,
title = {Analyzing epsilon'/epsilon in the 1/N_c Expansion},
author = {T. Hambye and G. O. Koehler and E. A. Paschos and P. H. Soldan},
journal= {arXiv preprint arXiv:hep-ph/0001088},
year = {2016}
}
Comments
One reference corrected. 5 pages, talk presented by P.H. Soldan at the 3. International Conference on B Physics and CP Violation, Taipei, Taiwan, December 3 - 7, 1999. Slightly expanded version of the article submitted to the proceedings