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

Abstract

We use experimental data on $e^{+}e^{-} \rightarrow ηπ^{+}π^{-}$ and $τ^{-} \to ηπ^{-}π^{0}ν_τ$ to test conservation of vector current (CVC) by comparing the predicted hadronic spectrum and branching fraction with the $τ$ decay data. Based on the corresponding $e^+e^-$ data and CVC, we also calculate the branching fraction of $τ^{-} \to η^\primeπ^{-}π^{0}ν_τ$ decay.

6 pages, 5 figures, Talk at The 11th International Workshop on Tau Lepton Physics Manchester, UK, 13-17 September 2010