Minimal anomalous $\mathrm{U}(1)$ theories and collider phenomenology

Understand

We study the collider phenomenology of a neutral gauge boson $Z'$ arising in minimal but anomalous $\mathrm{U}(1)$ extensions of the Standard Model (SM).

• To retain gauge invariance of physical observables, we consider cancellation of gauge anomalies through the Green-Schwarz mechanism.
• We categorize a wide class of $\mathrm{U}(1)$ extensions in terms of the new $\mathrm{U}(1)$ charges of the left-handed quarks and leptons and the Higgs doublet.
• We derive constraints on some benchmark models using electroweak precision constraints and the latest 13 TeV LHC dilepton and dijet resonance search data.