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

A. A. Bel'kov, G. Bohm, A. V. Lanyov +1

The calculations of isotopic amplitudes and their results for the direct $CP$--violating charge asymmetry in $K^{\pm }\to 3\pi$ decays within the nonlinear and linear ($\sigma$--model) chir…