2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44898Calculations of radiative corrections to the top quark width are reviewed. QCD effects are discussed for $t-\bar t$ systems produced in $e^+e^-$ annihilation near the energy threshold.}Karlsruhe Univ. preprint TTP 93-21, 6p., 2 figures not included (Talk presented by M. Jeżabek at the Workshop on Physics and Experiments at Linear $e^+e^-$ Colliders, Waikoloa, Hawaii, April 1993)High Energy Physics - Phenomenologytext