Gauge-Higgs Unification at LHC

TL;DR

This paper explores how gauge-Higgs unification models predict significant deviations in Higgs boson production and decay at the LHC compared to the Standard Model, potentially observable with current collider data.

Contribution

It provides a detailed analysis of Higgs production and decay in gauge-Higgs unification, highlighting distinctive signatures due to Kaluza-Klein mode effects that differ from other models.

Findings

Higgs production cross section deviates for KK modes < 1 TeV

Branching ratio into two photons is significantly altered

Deviations are potentially measurable at the LHC

Abstract

Higgs boson production by the gluon fusion and its decay into two photons at the LHC are investigated in the context of the gauge-Higgs unification scenario. The qualitative behaviors for these processes in the gauge-Higgs unification are quite distinguishable from those of the Standard Model and the universal extra dimension scenario because of the overall sign difference for the effective couplings induced by one-loop corrections through Kaluza-Klein (KK) modes. For the KK mode mass smaller than 1 TeV, the Higgs productions cross section and its branching ratio into two photons are sizably deviated from those in the Standard Model. Associated with the discovery of Higgs boson, this deviation may be measured at the LHC.