2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/182785We estimate the theoretical uncertainties of the model developed in Phys. Rev. C70 055503 for inclusive quasielastic charged-current neutrino-nucleus reactions at intermediate energies. Besides we quantify the deviations of the predictions of this many body framework from those obtained within a simple Fermi gas model. An special attention has been paid to the ratio σ(μ)/σ(e) of interest for experiments on atmospheric neutrinos. We show that uncertainties affecting this ratio are likely smaller than 5%10 pages, 6 figures. Few errors corrected. Accepted in Physics Letters BHigh Energy Physics - PhenomenologyNuclear Theorytext