$τ$ Anomalous Couplings and Radiation Zeros in the $e^+e^- \to τ \barτγ$ process

Details $τ$ Anomalous Couplings and Radiation Zeros in the $e^+e^- \to τ \barτγ$ process $τ$ Anomalous Couplings and Radiation Zeros in the $e^+e^- \to τ \barτγ$ process

2003-12-22

arxiv.org/abs/hep-ph/0312316v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 10 figures

Scientific paper

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.

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