2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45259In this talk I discuss the effects of physics beyond the standard model on the process $Z \to b\bar{b}$. I argue that, because the top-quark is heavy, this process is susceptible to large corrections from new physics.Talk presented at DPF `94, Albuquerque NM, Aug. 2-6, 1994, 21 pages, Latex, using world_sci.sty and epsf, BUHEP-94-22High Energy Physics - Phenomenologytext