Precision Electroweak Constraints on Top-Color Assisted Technicolor

Abstract

Using precision electroweak data, we put limits on ``natural'' top-color assisted technicolor models. Generically the new $U(1)$ gauge bosons in these models must have masses larger than roughly 2 TeV, although in certain (seemingly unrealistic) models the bound can be much lower.

Comments: 14 pages, LaTeX, 3 embedded figures, figures are also available at http://smyrd.bu.edu/htfigs/htfigs.html