2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39857Effects of the $Σ$N channels on the spin-orbit force in $Λ$-hypernuclei are investigated. It is found that the cancellation between the symmetric and the antisymmetric $Λ$N spin-orbit force becomes more complete when the contribution from the $Σ$N channels is included. This may be the one of the reasons why the observed LS splitting of the $Λ$ single particle energy is very small.8 pages, 1 figureHigh Energy Physics - Phenomenologytext