Abstract
Grand Unified Theories (GUT) offer an elegant and unified description of electromagnetic, weak and strong interactions at high energy scales. A phenomenological and exciting possibility to grasp GUT is to search for TeV scale observables arising from Abelian groups embedded in GUT constructions. That said, we use dilepton data (ee and μμ) that has been proven to be a golden channel for a wide variety of new phenomena expected in theories beyond the Standard Model to probe GUT-inspired models. Since heavy dilepton resonances feature high signal selection efficiencies and relatively well-understood backgrounds, stringent and reliable bounds can be placed on the mass of the Z′ gauge boson arising in such theories. In this work, we obtain 95% C.L. limits on the Z′ mass for several GUT-models using current and future proton–proton colliders with s=13 TeV,33 TeV,and100 TeV, and put them into perspective with dark matter searches in light of the next generation of direct detection experiments.
Highlights
Many popular extensions of the Standard Model (SM) rely on the existence of new spin-1 states, possibly with sizable couplings with the SM fermions
A phenomenological and exciting possibility to grasp Grand Unified Theories (GUT) is to search for TeV scale observables arising from Abelian groups embedded in GUT constructions
It might be already argued that a natural embedding of this setup is represented by Grand Unified Theories (GUT)
Summary
Many popular extensions of the Standard Model (SM) rely on the existence of new spin-1 states, possibly with sizable couplings with the SM fermions. A phenomenologically interesting scenario is represented by the case in which the intermediate group is broken to the SM at scales not exceeding few TeVs. In case the Z boson can be produced at current colliders, and if the Z boson possessed sizable couplings to the SM fermions, it would provide a clear signal represented by resonances in the dilepton, dijet final states peaked at the Z mass. In case the Z boson can be produced at current colliders, and if the Z boson possessed sizable couplings to the SM fermions, it would provide a clear signal represented by resonances in the dilepton, dijet final states peaked at the Z mass These searches have been intensively conducted at the LHC and many of the results have been made available [2,3,4,5].
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