2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42993The O(αα_s) contribution to the relationship between the MS- and the pole-mass of the t-quark propagator within the Standard Model is reviewed. At the same order also the corrections to the top-Yukawa coupling is discussed. We furthermore present the exact analytic expression for the gaugeless limit.appolb.cls, 10 pages; contribution to the Proceedings of XXVII International Conference of Theoretical Physics, Ustron, Poland, September 15-21, 2003; v2: typos in Eq.(16) correctedHigh Energy Physics - Phenomenologytext