New physics with three-photon events at LEP

  • M. Baillargeon
  • F. Boudjema
  • E. Chopin
  • V. Lafage


The effect a generalZ→3γ vertex in the reactione + e →3γ is studied with a particular attention to LEP searches. We give exact analytical expressions including realistic cuts for the signal and present a detailed analysis based on a Monte Carlo that includes the effect of the irreducible 3γ QED cross section. As special applications we discuss the effect of heavy scalars, fermions and gauge bosons.


Vector Boson Helicity Amplitude Anomalous Coupling Event Plane Soft Photon 
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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • M. Baillargeon
    • 1
  • F. Boudjema
    • 2
  • E. Chopin
    • 2
  • V. Lafage
    • 2
  1. 1.Grupo Teórico de Altas EnergiasInstituto Superior Técnico Edifício Ciência (Física)Lisboa CodexPortugal
  2. 2.Laboratoire de Physique Théorique ENSLAPPChemin de BellevueAnnecy-le-Vieux, CedexFrance

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