Production of $π^0ρ^0$ pair in electron-positron annihilation in the Nambu-Jona-Lasinio model

Abstract

The process $e^+e^- \to π^0ρ$ is described in the framework of the expanded NJL model in the energy region from 0.9 GeV to 1.5 GeV. The contribution of intermediate state with vector mesons $ω(782), \,\,ϕ(1020)$, and $ω'(1420)$, where $ω'$ is the first radial excitation of $ω$ - meson was taken into account. Results obtained are in satisfactory agreement with experimental data.

5 pages, 1 figure, 1 table