Searching for signatures of $E_6$

Abstract

The grand unified group $E_6$~is a predictive scheme for physics beyond the standard model (SM). It offers the possibility of extra $Z$ bosons, new vector-like fermions, sterile neutrinos, and neutral scalars in addition to the SM Higgs boson. Some previous discussions of these features are updated and extended. Their relevance to present searches at the CERN Large Hadron Collider and in patterns of neutrino masses is noted. Addition of a small set of scalar bosons at the TeV scale permits gauge unification near a scale of $10^{16}$ GeV, and leads to bounds on masses of particles beyond those in the standard model.

51 pages, 12 figures, considerably revised

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Cited by in corpus (12)

• Review of searches for vector-like quarks, vector-like leptons, and heavy neutral leptons in proton-proton collisions at $\sqrt{s}$ = 13 TeV at the CMS experiment
• Inclusive nonresonant multilepton probes of new phenomena at $\sqrt{s}=$ 13 TeV
• Interpreting the 750 GeV digamma excess: a review
• Heavy resonances at energy-frontier hadron colliders
• Non-standard signatures of vector-like quarks in a leptophobic 221 model
• Electroweak couplings and LHC constraints on alternative $Z^{\prime }$ models in $E_6$
• Search for vector-like leptons coupling to first- and second-generation Standard Model leptons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for vector-like leptons with long-lived particle decays in the CMS muon system in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Sterile Neutrinos in String Derived Models
• Dark Matter and Collider Searches in $S_3$-Symmetric 2HDM with Vector Like Leptons
• Masses and Mixing of Neutral Leptons in a Grand Unified E_6 Model with Intermediate Pati-Salam Symmetry
• Signals for vector-like leptons in an $S_3$-symmetric 2HDM at ILC