  The data on the form factors of the $K_{e4}$ decay permit to fix a value of
the non-specified in the theory parameter entering in the lagrangian of the
system of $0^+$ and $0^-$ mesons . Then, for a mass of the lightest
$\sigma$-meson we find: $m_{\sigma}$=663 MeV. As for a nature of the spin-1
mesons, also contributing into $K_{e4}$ form factors, the data do not allow to
interpret them as the gauge bosons of the chiral theory.
