ChPT tests at the NA48 and NA62 experiments at CERN

NA48/2, NA62 Collaborations, : +159

The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes: Ke4(+-) ($K^{\pm }\to {\pi }^{+}{\pi }^{-}{e}^{\pm }\nu$) and Ke4(00) ($K^\pm \to π^0 π^…