CVC and τ\rightarrow η(η^\prime)π^{-}π^{0}ν_τ

V. Cherepanov, S. Eidelman

We use experimental data on $e^{+}{e}^{-}\to \eta {\pi }^{+}{\pi }^{-}$ and ${\tau }^{-}\to \eta {\pi }^{-}{\pi }^0{\nu }_{\tau }$ to test conservation of vector current (CVC) by comparing the predicted hadronic spe…