Prospects for top-prime quark discovery at the Tevatron

Abstract

We show that a top-prime quark as heavy as 600 GeV can be discovered at the Tevatron, provided it is resonantly pair-produced via a vector color octet. If the top-prime originates from a vectorlike quark, then the production of a single top-prime in association with a top may also be observable, even through its decay into a Higgs boson and a top. A color octet with mass of about 1 TeV, which decays into a top-prime pair, may account for the CDF excess of semileptonic (Wj)(Wj) events.

Comments: 22 pages, 6 ps figures. v2: Note added about the new D0 search for (Wb)(Wb) resonances; section 4.1 expanded; single-top constraint updated in section 2; references added