Decays of excited strange mesons in the extended NJL model

A chiral U(3) x U(3) Lagrangian, containing besides the usual meson fields their first radial excitations, is considered. The Lagrangian is derived by bosonization of the Nambu-Jona-Lasinio (NJL) quark model with separable no nlocal interactions. The spontaneous breaking of chiral symmetry is governe d by the NJL gap equation. The first radial excitations of the kaon, K* and phi are described with the help of three form factors. The values for the decay widths of the processes K*'--> rho K. K*' --> K*pi, K*' --> K pi, phi ' --> K*K, phi' --> (K) over bar K, K' --> K rho,K' --> K*pi and K' --> K2 pi are obtained in qualitative agreement with the experimental data.