2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/214560In this paper we study the lepton polarization asymmetry for the simileptonic OZI-forbidden annihilation B^-_c->η' \ell^- \barν decay where \ell=μ, τ. Our results show that the branching ratio turn out to be of order 10^{-4}. Beside, we find that longitudinal, transversal and normal components of lepton polarizations can be measured for both μand τdecay modes in the future experiments at the LHC.12 pages, 8 figuresHigh Energy Physics - Phenomenologytext