2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215957The final state interactions (FSI) model, in which soft rescattering of low mass intermediate states dominate, is suggested. It explains why the strong interaction phases are large in the $B_d\toππ$ channel and are considerably smaller in the $B_d\toρρ$ one.talk at PANIC08, Eilat, IsraelHigh Energy Physics - PhenomenologyFSI and rare B decays: B-->ππ, ρρtext