Physics potential of a Tevatron tripler

We explore the capabilities for new physics discovery in proton-antiproton collisions at 5.4 TeV center-of-mass energy with luminosity 1033 cm−2 s−1 at a Tripler upgrade of the Tevatron collider. The prospects are robust for the usual Higgs boson and supersymmetry benchmarks. With an integrated luminosity of 40 fb−1, discoveries at 5σ could be made for a standard Higgs boson of mass ≲680 GeV (600 GeV for 10 fb−1), a lighter chargino of mass ≲380 GeV, and an extra Z boson of mass ≲2.6 TeV; four-fermion contact interactions from new physics with scale ≲74 TeV could be excluded at the 95% confidence level.