CP violation in the charged pion energy spectra of the decays K±→π0π0π±

CP violation leads to a difference between the parameters g+ and g− that characterise the energy distributions of the “odd” pion in the decays K±→π0π0π± and K±→π±π±π∓. We argue that for the first decay, the asymmetry Δg=(g+−g−)/(g++g−) is fixed at a value around Δg=2×10−6, whereas for the second decay, the asymmetry Δg may be one order of magnitude larger.