Neutral Trilinear Gauge Boson Couplings in Little Higgs Models

TL;DR

This paper calculates one-loop corrections to neutral gauge boson couplings in Little Higgs models, compares them with MSSM and Standard Model predictions, and explores potential new physics effects in these vertices.

Contribution

It provides the first detailed computation of CP-even triple neutral gauge boson vertices in Little Higgs models and compares these effects with MSSM and SM predictions.

Findings

Little Higgs models induce measurable one-loop corrections to neutral gauge boson couplings.

Comparison shows differences between Little Higgs, MSSM, and SM predictions.

Results suggest potential experimental signatures for new physics in gauge boson interactions.

Abstract

We compute the one loop new physics effects to the CP even triple neutral gauge boson vertices $\gamma^\star \gamma Z$, $\gamma^\star Z \,Z$, $Z^\star \,Z\,\gamma$ and $Z^\star\,Z\,Z$ in the context of Little Higgs models. In addition, we re-examine the MSSM contribution at the chosen point of SPS1a' and compare with the SM and Little Higgs models.