2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44873We describe how to probe new physics through large CP violation effects and non--standard Z-t-t couplings via the scattering process e^-e^+ -> t tbar. [Talk presented at the Workshop on Physics and Experiments with Linear $e^+e^-$ Colliders, Waikoloa, Hawaii, 26-30 April 1993.]4 pages, TeXsis, MSUTH 93/09High Energy Physics - Phenomenologytext