A New Estimate of $\varepsilon '/\varepsilon$

Details A New Estimate of $\varepsilon '/\varepsilon$ A New Estimate of $\varepsilon '/\varepsilon$

1996-07-15

arxiv.org/abs/hep-ph/9607312v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, uuencoded LATEX2e file including 4 eps figures. Talk given at the Workshop on K Physics, Orsay, France, May 30 - Jun

Scientific paper

We discuss a new estimate of $\varepsilon '/\varepsilon$ in the kaon system. The present approach is based on the evaluation of the hadronic matrix elements of the \mbox{$\Delta S =1$} effective quark lagrangian by means of the chiral quark model, with the inclusion of meson one-loop renormalization and NLO Wilson coefficients. The estimate here reviewed is fully consistent with the $\Delta I =1/2$ selection rule in $K\to \pi\pi$ decays, which is well reproduced within the same framework.

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