Threshold corrections to the gamma t anti-t vertex at O(alpha alpha(s))

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220652In these proceedings a recent calculation of the last missing piece of the two-loop O(alpha alpha(s)) corrections to gamma t anti-t vertex at the t anti-t threshold due to the exchange of a W boson and a gluon is summarised. The calculation constitutes a building block of the top quark threshold production cross section at electron positron colliders.LCWS08 proceedingsHigh Energy Physics - PhenomenologyThreshold corrections to the gamma t anti-t vertex at O(alpha alpha(s))text