Lepton Number-Driven Sterile Neutrino Production in the Early Universe
arXiv:0802.3377 · doi:10.1103/PhysRevD.78.023524
Abstract
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. We find that this resonance evolution can result in relic sterile neutrino energy spectra with a generic form which is sharply peaked in energy. We compare our complete quantum kinetic equation treatment with the widely-used quantum Zeno ansatz.
15 pages, 7 figures; matches published version
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Cited by in corpus (13)
- Neutrino mass from Cosmology
- The multi-angle instability in dense neutrino systems
- Resonantly-Produced 7 keV Sterile Neutrino Dark Matter Models and the Properties of Milky Way Satellites
- keV Sterile Neutrino Dark Matter from Singlet Scalar Decays: The Most General Case
- Fundamental physics with the Hubble Frontier Fields: constraining Dark Matter models with the abundance of extremely faint and distant galaxies
- Neutrino flavor transformation in the lepton-asymmetric universe
- Self-consistency in models of neutrino scattering and fast flavor conversion
- Probing neutrino physics with a self-consistent treatment of the weak decoupling, nucleosynthesis, and photon decoupling epochs
- Effects of an Intermediate Mass Sterile Neutrino Population on the Early Universe
- Roles of sterile neutrinos in particle physics and cosmology
- Return of the Lepton Number: Sterile Neutrino Dark Matter Production and the Revival of the Shi-Fuller Mechanism
- Instabilities in neutrino systems induced by interactions with scalars
- Opening up New Parameter Space for Sterile Neutrino Dark Matter