Processes e+e- → π0(π0′)γ in extended NJL model

The processes of electron-positron annihilation into pi(0)gamma and into pi' (1300)gamma are considered within an extended NJL model. The intermediate vector mesons rho(0), omega, rho'(1450), and. omega'(1420) are taken into account. The latter two mesons are treated as the first radial excited states. They are incorporated into the NJL model by means of a polynomial form factor. Numerical predictions for the cross-sections of these processes are received for the center-of-mass energies below 2 GeV. Our results for the pi(0)gamma. production are in agreement with experimental data obtained in the energy region 600-1020MeV.