What The $K_{E4}$ Decay Tells Us On A Value Of $\Sigma$-Particle Mass And On A Nature Of The Spin-1 Mesons

E. Shabalin

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 $0^{-}$ me…