2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211683Detailed structure calculations in $^{\: 12}_{Ξ^-}$Be, $^{\: 5}_{Ξ^-}$H, $^{\: 9}_{Ξ^-}$Li, $^{\: 7}_{Ξ^-}$H and $^{\:10}_{Ξ^-}$Li are performed within the framework of the microscopic two-, three- and four-body cluster models using the Gaussian Expansion Method.14 pages, 19 figures. To be published in Phys. Rev. CNuclear Theorytext