2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230355In this talk we discuss top-quark pair production in association with an additional jet. We present numerical results based on a next-to-leading order QCD calculation.4 pages, contribution to the proceedings of the XLIIIth Rencontres de Moriond (QCD)High Energy Physics - Phenomenologytext