What we have learned from direct CP violation studies in kaon decays

Details What we have learned from direct CP violation studies in kaon decays What we have learned from direct CP violation studies in kaon decays

2003-11-17

arxiv.org/abs/hep-ph/0311209v2

Czech.J.Phys. 55 (2004) B193-B206

Physics

High Energy Physics

High Energy Physics - Phenomenology

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Scientific paper

A self-consistent analysis of K --> 2pi and K --> 3pi decays within a unique framework of chiral dynamics applied to the QCD-corrected weak nonleptonic quark lagrangian has been performed. The results on K --> 2pi amplitudes at O(p^6), including the value for epsilon'/epsilon, are compared with experiment to fix phenomenological B-factors for mesonic matrix elements of nonpenguin and penguin four-quark operators. The dependence of these B-factors on different theoretical uncertainties and experimental errors of various input parameters is investigated. Finally, we present our estimates at O(p^6) for the CP asymmetry of linear slope parameters in the K+- --> 3pi Dalitz plot.

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