Abstract:In framework of the chiral perturbation theory we obtain the phenomenological relations between decay branches of rare radiative kaon to pion and leptons K + → π + l + l − and K 0 S → π 0 l + l − and meson form factors. The comparison of these results with the present day experimental data shows us that the ChPT relations for a charge kaon can determine meson form factors from already measured decay rates at high precision level. However, in the case of the neutral kaon decays K 0 → π 0 e + e − (µ + µ − ) the … Show more
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