2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48323After a brief comment on the role of top quark in models of electroweak symmetry breaking (EWSB), I shall discuss what we know about top quark interaction and how to improve that knowledge. Since bottom quark is the weak isospin partner of the top quark, its interaction with a scalar boson may also distinguish models of EWSB. We show that Tevatron can provide useful information through the associated production of a scalar with a bottom quark pair.9 pages, Latex; Talk given at the International Seminar ``Quarks-98'', May 17-24, 1998, Suzdal, RussiaHigh Energy Physics - Phenomenologytext