2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39986We discuss the CP-violating dimuon charge asymmetry of events p p-bar ---> B B-bar X ---> mu mu X in the Standard Model. Our conclusion is that the asymmetry is larger than previously expected and may reach a few percent for the (B_d^0, B-bar_d^0) system. The analysis is also extended to the Two Higgs Doublet Model (Model II).9 pages, 3 Postscript figuresHigh Energy Physics - Phenomenologytext