Phenomenology of GUT-inspired gauge-Higgs unification

TL;DR

This paper investigates a GUT-inspired gauge-Higgs unification model, analyzing its low-energy phenomenology, collider signatures, and potential deviations from the Standard Model, especially in di-Higgs production at future colliders.

Contribution

It provides a detailed parameter space analysis of a GUT-inspired gauge-Higgs unification model and explores its collider phenomenology and experimental constraints.

Findings

Modifications of di-Higgs cross section of about 20% compared to SM.

Future 100 TeV colliders could constrain the model through precise measurements.

Alternative signatures may help constrain the model in the near future.

Abstract

We perform a detailed investigation of a Grand Unified Theory (GUT)-inspired theory of gauge-Higgs unification. Scanning the model's parameter space with adapted numerical techniques, we contrast the scenario's low energy limit with existing SM and collider search constraints. We discuss potential modifications of di-Higgs phenomenology at hadron colliders as sensitive probes of the gauge-like character of the Higgs self-interactions and find that for phenomenologically viable parameter choices modifications of the order of 20\% compared to the SM cross section can be expected. While these modifications are challenging to observe at the LHC, a future 100 TeV hadron collider might be able to constrain the scenario through more precise di-Higgs measurements. We point out alternative signatures that can be employed to constrain this model in the near future.