2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185385Rare Lambda_b -> Lambda l^+ l^- decay is investigated in framework of general two Higgs doublet model, in which a new source of CP violation exists (model III). The polarization parameter, CP asymmetry and decay width are calculated. It is shown that CP asymmetry is a very sensitive tool for establishing model III.16 pages, 3 figures, LaTeX formattedHigh Energy Physics - Phenomenologytext