2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/197223An analytic analysis of the CP violating effects arising from the soft SUSY breaking parameters on the decays $B^0_{s,d}\to \it l^+\it l^-$ at large $\tanβ$ is given. It is found that the phases have a strong effect on the branching ratio and in some regions of the parameter space they can lead to a variation of the branching ratio by as much as 1-2 orders of magnitude. These results have important implications for the discovery of the $B^0_{s}\to μ^+μ^-$ signal in RUNII of the Tevatron and further on how the parameter space of SUSY models will be limited once the signal is found.Revised version. 13 pages, Latex, including 6 figuresHigh Energy Physics - Phenomenologytext