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Exclusive Lambda(b)->Lambda l(+)l(-) decay in a two-Higgs-doublet model

Rare Lambda(b) --> Lambda l(+)l(-) decay is investigated within a framework of a general two-Higgs-doublet model, in which a new sourer of CP violation exists (model III). The polarization parameter, CP asymmetry and decay width are calculated. It is shown that CP asymmetry is a sensitive tool for establishing model III.