Extending the Higgs Boson Reach at the Upgraded Fermilab Tevatron

We study the observability of a standard-model-like Higgs boson at the upgraded Fermilab Tevatron via the modes p{bar p}{r_arrow}gg{r_arrow}h{r_arrow}W{sup {asterisk}}W{sup {asterisk} }{r_arrow}{ell}{nu}jj and {ell}{bar {nu}}{ovr {ell}}{nu} . We find that, with c.m.thinspthinspenergy of 2thinspthinspTeV and an integrated luminosity of 30 fb{sup {minus}1} , the signal may be observable for the mass range of 135{approx_lt}m{sub h}{approx_lt}180 GeV at a (3{minus}5){sigma} statistical level. We conclude that the upgraded Fermilab Tevatron may have the potential to detect a standard-model-like Higgs boson in the mass range from the CERN e{sup +}e{sup {minus}} collider LEPthinspthinspII reach to 180thinspthinspGeV. {copyright} {ital 1998} {ital The American Physical Society }