  The process $e^+e^- \to \tau \bar\tau \gamma$ contains configurations of the
four-momenta for which the scattering amplitude vanishes (Radiation Zeros or
Null Zone). These Radiation Zeros only occur for couplings given by a gauge
theory, in particular the standard model. Therefore they are sensitive to
physics beyond the standard model as the anomalous magnetic and weak moment of
the $\tau$ lepton. In this article we compute the effect of these anomalous
interactions on the Radiation Zeros in the above mentioned process.
