Z' Discovery Reach at Future Hadron Colliders: A Snowmass White Paper

Extra neutral gauge bosons are a feature of many models of physics beyond the standard model (BSM) and their discovery could possibly be the first evidence for new physics. In this Snowmass white paper we compare the discovery reach of the high energy hadron colliders considered by the Snowmass study for a broad range of BSM models. It is expected that the LHC should be able to see evidence for a Z' arising from a large variety of BSM models up to a mass of ~5 TeV when the LHC reaches its design energy and luminosity, and up to ~6 TeV with the high luminosity upgrade. Further into the future, the high energy LHC would substantially extend this reach to ~11 TeV, while the ~100 TeV VHE-LHC could see evidence for Z' 's up to ~30 TeV.