# $τ$ Anomalous Couplings and Radiation Zeros in the $e^ e^- o τ arτγ$ process

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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 anoma

Author: I. Rodriguez; O. A. Sampayo

Source: https://archive.org/