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arXiv · hep-ph/9607312

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

S. Bertolini
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Abstract

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{$ΔS =1$} 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 $ΔI =1/2$ selection rule in $K\to ππ$ decays, which is well reproduced within the same framework.

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S. Bertolini. 1996-07-15. A New Estimate of $\varepsilon '/\varepsilon$. https://arxiv.org/abs/hep-ph/9607312

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