τ Anomalous Couplings and Radiation Zeros in the e⁺e^- → ττγ process

2003/12/22 by I. Rodriguez, Rodriguez, I., O. A. Sampayo +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0312316

12 pages, 10 figures

arxiv created 2003/12/22 · arxiv updated 2009/12/01

Abstract

The process e⁺e^- → ττγ 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 τ lepton. In this article we compute the effect of these anomalous interactions on the Radiation Zeros in the above mentioned process.

Related

• The anomalous four-point interaction in the radiative leptonic τ decay
• Radiation Zeros as an Observable to test Physics beyond the Standard Model
• Anomalous electromagnetic moments of τ lepton in γγ→ τ⁺ τ^- reaction in Pb+Pb collisions at the LHC
• Probing the electromagnetic dipole moment of the τ lepton in the e⁺e^- → γ^*/Z → τ⁺ τ^- reaction
• Effects of anomalous couplings of the tau lepton