CP violation in kaon decays

Abstract

We review the Standard Model predictions of CP violation in kaon decays. We present an elementary introduction to Chiral Perturbation Theory, four--quark effective hamiltonians and the relation among them. Particular attention is devoted to $K\to 3\pi$, $K\to 2\pi \gamma$ and $K\to \pi \bar{f}f$ decays.

91 pages, Latex, to appear in Int. J. Mod. Phys. A, full postscript version also available at http://hpteor.lnf.infn.it/papers.html

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• Chiral perturbation theory
• Chiral Perturbation Theory
• Weak $K$--Amplitudes in the Chiral and $1/N_c$--Expansions
• Flavour changing neutral currents and CP violating processes in generalized supersymmetric theories
• The $\Delta S=1$ Weak Chiral Lagrangian as the Effective Theory of the Chiral Quark Model
• Radiative Four--Meson Amplitudes in Chiral Perturbation Theory
• Can a Measurement of the $B_s-{\overline{B}}_s$ Mass Difference Establish the CKM Paradigm?

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• Rare weak decays of ${\eta }^{\prime }\to K\pi$
• CP violation in neutrino-photon scattering
• CP conserved nonleptonic $K\to \pi \pi \pi$ decays in the Chiral Quark Model