Direct CP violation in K->3pi decays induced by SUSY chromomagnetic penguins

Abstract

An analysis of the CP violating asymmetry in $K^{\pm }\to (3\pi {)}^{\pm }$ decays in the Standard Model and, by means of the mass insertion approximation, in a wide class of possible supersymmetric extensions, is presented. We find that the natural order of magnitude for this asymmetry is $\cO(10^{-5})$ in both cases. Within supersymmetric models effects as large as $\cO(10^{-4})$ are possible, but only in a restricted range of the relevant parameters.

Latex, 11 pages, 1 figure

References in corpus (5)

• Observation of Direct CP Violation in K_{S,L} to ππDecays
• Connections between epsilon'/epsilon and Rare Kaon Decays in Supersymmetry
• Supersymmetric CP violation ${\epsilon }^{\prime }/\epsilon$ due to asymmetric A-matrix
• CP Violation in Hyperon Decays from Supersymmetry
• Supersymmetric contributions to direct CP violation in K -> pi pi gamma decays

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