2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/213509We analyse the long-distance contribution to $B\to X_s\ell^+\ell^-$ differential decay rate when the momentum dependence of $ψ$ and $ψ'$-$γ$ conversion strength is taken into account. The results indicate that the resonance to nonresonance interference in the dilepton invariant mass distribution is substantially reduced.10 pages, Latex, one figure (included)High Energy Physics - Phenomenologytext