2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/203870We calculate the prompt neutrino flux from atmospheric charm production by cosmic rays, using the dipole picture in a perturbative QCD framework, which incorporates the parton saturation effects present at high energies. We compare our results with the next-to-leading order perturbative QCD result and find that saturation effects are large for neutrino energies above 10^6 GeV, leading to a substantial suppression of the prompt neutrino flux. We comment on the range of prompt neutrino fluxes due to theoretical uncertainties.13 pages with 11 figures; expanded discussion, added references, version to be published in Phys. Rev. DHigh Energy Physics - PhenomenologyAstrophysicstext