Description of the processes e⁺ e⁻ → π⁺ π⁻ and $τ^- → π^- π^0 ν_τ$ in the NJL model with value of the vector coupling constant gρ = 6

It is shown that the processes e⁺ e⁻ → π⁺ π⁻ and τ⁻ → π⁻ π⁰ ν_τ can be described in a unified approach in satisfactory agreement with experiment using the vector coupling constant gρ = 6. In this case, in addition to quark loops, it is also necessary to take into account meson loops corresponding to the next order in 1/Nc. These loops must be taken into account when describing the γ (W) → ρ transition, as well as in interaction of mesons in the final state.