STANDARD MODEL HIGGS PHYSICS AT A 4-TEV UPGRADED FERMILAB TEVATRON

We compute an array of standard model Higgs boson (H) signals and backgrounds for a possible upgrade of the Fermilab Tevatron to s =4 TeV. Taking mt140 GeV, and assuming a total accumulated luminosity of L=30 fb-1, we find that a standard model Higgs boson with mH110 GeV could almost certainly be detected using the W±H→lνbb̄ mode. A Higgs boson with a mass between ∼120 GeV and ∼140 GeV or above ∼230-250 GeV almost certainly would not be seen. A Higgs boson with mH∼150 GeV or 200mH230-250 GeV has a decent chance of being detected in the ZZ→4l mode. There would also be some possibility of discovering the H in the WW→lνjj mode for 150mH200 GeV. Finally, hints of an event excess in the WW→llνν mode due to the H might emerge for 140mH180 GeV. Given the difficult nature of the Higgs boson signals for mH values beyond the reach of CERN LEP 200, and the discontinuous mH range that could potentially be probed, a 4 TeV upgraded Tevatron would allow a much less comprehensive search for a standard model Higgs boson than the CERN LHC. © 1995 The American Physical Society.