Estimating epsilon'/epsilon in the Standard Model

Details Estimating epsilon'/epsilon in the Standard Model Estimating epsilon'/epsilon in the Standard Model

1999-08-05

arxiv.org/abs/hep-ph/9908268v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures. Talk given at the Kaon 99 Conference

Scientific paper

I discuss the comparison of the current theoretical calculations of epsilon'/epsilon with the experimental data. Lacking reliable ``first principle'' calculations, phenomenological approaches may help in understanding correlations among different contributions and available experimental data. In particular, in the chiral quark model approach the same dynamics which underlies the Delta I = 1/2 selection rule in kaon decays appears to enhance the K -> pi pi matrix element of the Q_6 gluonic penguin, thus driving epsilon'/epsilon in the range of the recent experimental measurements.

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