On the $p^4$--corrections to $K \to 3\pi$ decay amplitudes in nonlinear and linear chiral models

The calculations of isotopic amplitudes and their results for the direct $C P$ –violating charge asymmetry in $K^{\pm} \to 3 π$ decays within the nonlinear and linear ( $σ$ –model) chiral Lagrangian approach are compared with each other. It is shown, that the latter, taking into account intermediate scalar resonances, does not reproduce the $p^{4}$ –corrections of the nonlinear approach introduced by Gasser and Leutwyler, being saturated mainly by vector resonance exchange. The resulting differences concerning the $C P$ violation effect are traced in some detail.

On the $p^{4}$ --corrections to $K \to 3 π$ decay amplitudes in nonlinear and linear chiral models

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On the $p^{4}$ --corrections to $K \to 3 π$ decay amplitudes in nonlinear and linear chiral models

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On the p4p4--corrections to K→3πK→3π decay amplitudes in nonlinear and linear chiral models

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On the p4p4--corrections to K→3πK→3π decay amplitudes in nonlinear and linear chiral models

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On the $p^{4}$ --corrections to $K \to 3 π$ decay amplitudes in nonlinear and linear chiral models

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On the $p^{4}$ --corrections to $K \to 3 π$ decay amplitudes in nonlinear and linear chiral models

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