2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/170060We explore the effects of the anomalous $tbW$ couplings on the $\bd$ mixing and recently measured $\bs$ mixing. The combined analysis of mixings via box diagrams with penguin decays provides strong constraints on the anomalous top quark couplings. We find the bound from the $\bd$ mixing data is stronger than that from the $\bs$ mixing.6 pages, 2 figuresHigh Energy Physics - Phenomenologytext