Phenomenology of GUT-inspired gauge-Higgs unification

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.1 A SU (6)-based scenario was discussed in [30], also demonstrating that proton decay can be avoided. 2 A different variant of evolutionary algorithms, namely genetic algorithms, have been employed in the exploration of viable string theory scenarios and the pMSSM in [33,34].

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

“…Recently, an alternative gauge-Higgs unification model with quark-lepton multiplets introduced in the spinor, vector, and singlet representations of SOð5Þ, which is referred to as the B model below, has been proposed [13]. The B model can be embedded in the SOð11Þ gauge-Higgs grand unification [35][36][37][38][39][40][41][42], where the SM gauge group and quark-lepton content are incorporated into the grand unified theory (GUT) [43][44][45][46][47][48] in a higher-dimensional framework [49][50][51][52][53][54][55][56][57][58][59].…”

Fermion pair production at $e^- e^+$ linear collider experiments in GUT inspired gauge-Higgs unification

“…Recently, an alternative gauge-Higgs unification model with quark-lepton multiplets introduced in the spinor, vector, and singlet representations of SO (5), which is referred to as the B-model below, has been proposed [13]. The B-model can be embedded in the SO (11) gauge-Higgs grand unification [35][36][37][38][39][40][41][42], where the SM gauge group and quarklepton content are incorporated into grand unified theory (GUT) [43][44][45][46][47][48] in higher dimensional framework [49][50][51][52][53][54][55][56][57][58][59].…”

Signals of $W'$ and $Z'$ bosons at the LHC in the $SU(3) \times SO(5) \times U(1)$ gauge-Higgs unification

“…Hence physics of the Higgs boson is governed by the gauge principle and the Higgs boson mass is generated by quantum corrections in GHU models. Many GHU models are proposed for the electroweak unification [42][43][44][45][46][47][48][49][50][51][52][53][54][55] and GHU models for the grand unification are also presented [57][58][59][60][61][62][63][64]. Among them two types of SU (3) C ×SO( 5)×U (1) X GHU models in the warped spacetime have been studied.…”

“…One of them is called the "Amodel", where quark-lepton multiplets are introduced in the vector representation of SO(5) [42][43][44][45][46]. The other is called the "B-model", where quark-lepton multiplets are introduced in the spinor representation of SO(5) [47][48][49][50][51] which has been motivated from the study of the SO (11) gauge-Higgs GUT [57][58][59][60], and is called the GUT inspired GHU model.…”