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Quasielastic neutrino scattering from oxygen and the atmospheric neutrino problem

J. Engel·E. Kolbe·K. Langanke·P. Vogel
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Abstract

We examine several phenomena beyond the scope of Fermi-gas models that affect the quasielastic scattering (from oxygen) of neutrinos in the 0.1 -- 3.0 GeV range. These include Coulomb interactions of outgoing protons and leptons, a realistic finite-volume mean field, and the residual nucleon-nucleon interaction. None of these effects are accurately represented in the Monte Carlo simulations used to predict event rates due to $μ$ and $e$ neutrinos from cosmic-ray collisions in the atmosphere. We nevertheless conclude that the neglected physics cannot account for the anomalous $μ$ to $e$ ratio observed at Kamiokande and IMB, and is unlikely to change absolute event rates by more than 10--15\%. We briefly mention other phenomena, still to be investigated in detail, that may produce larger changes.

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J. Engel, E. Kolbe, K. Langanke, P. Vogel. 1993-04-22. Quasielastic neutrino scattering from oxygen and the atmospheric neutrino problem. https://doi.org/10.1103/physrevd.48.3048

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