2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/190438In the standard model, the Cabibbo-Kobayashi-Maskawa matrix, which incorporates the time-reversal violation shown by the charged current weak interactions, originates from the Higgs-quark interactions. The Yukawa interactions of quarks with the physical Higgs particle can contain further complex phase factors, but nevertheless conserve T, as shown by constructing the fermion T transformation and the invariant euclidean fermion measure.LaTeX, 4 pages; presented at PASCOS'03High Energy Physics - PhenomenologyHigh Energy Physics - Theorytext