Anomalous Quartic Couplings in W^+W^-\gamma, Z^0Z^0\gamma and Z^0\gamma\gamma Production at Present and Future e^+e^- Colliders

TL;DR

This paper studies how anomalous quartic gauge couplings affect three-boson production in electron-positron collisions at LEP2 and future colliders, helping to identify deviations from the Standard Model.

Contribution

It analyzes the impact of three anomalous couplings on production cross sections at different energies, offering a method to distinguish their effects.

Findings

Anomalous couplings significantly alter cross sections.

Energy and process combinations help discriminate couplings.

Future colliders can improve sensitivity to new physics.

Abstract

The production of three electroweak gauge bosons in high-energy $e^+e^-$ collisions offers a window on anomalous quartic gauge boson couplings. We investigate the effect of three possible anomalous couplings on the cross sections for $W^+W^-\gamma$, $Z^0Z^0\gamma$ and $Z^0\gamma\gamma$ productions at LEP2 ($\sqrt{s} = 200$ GeV) and at a future linear collider ($\sqrt{s} = 500$ GeV). We find that the combination of energies and processes provides reasonable discrimination between the various anomalous contributions.