2008

Lepton Number-Driven Sterile Neutrino Production in the Early Universe

Kishimoto, Chad T., Fuller, George M.

Understand

We examine medium-enhanced, neutrino scattering-induced decoherent production of dark matter candidate sterile neutrinos in the early universe.

In cases with a significant net lepton number we find two resonances, where the effective in-medium mixing angles are large.
We calculate the lepton number depletion-driven evolution of these resonances.
We describe the dependence of this evolution on lepton numbers, sterile neutrino rest mass, and the active-sterile vacuum mixing angle.

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