2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49456In the standard model, CP asymmetries in the $B^\pm \to π^\pm K$ channels are about 2% based on perturbative calculation. Rescattering effects might enhance it to at most (20-25)%. We show that lepton-number-violating $λ'$ couplings in supersymmetric models are capable of enhancing it to as large as 100%. Upcoming B factories will test this scenario.7 pages, Latex, requires iopconf1.sty which is included. Invited talk presented at `Beyond the Desert 1999', Castle Ringberg, Tegernsee, Germany, 6-12 June 1999High Energy Physics - Phenomenologytext