Lepton Number-Driven Sterile Neutrino Production in the Early Universe

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dc.creatorKishimoto, Chad T.
dc.creatorFuller, George M.
dc.date2008-02-22
dc.date2008-07-18
dc.date.accessioned2026-07-07T12:14:13Z
dc.date.available2026-07-07T12:14:13Z
dc.descriptionWe 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.
dc.description15 pages, 7 figures; matches published version
dc.identifierhttps://arxiv.org/abs/0802.3377
dc.identifierhttp://arxiv.org/abs/0802.3377
dc.identifierPhys.Rev.D78:023524,2008
dc.identifierdoi:10.1103/PhysRevD.78.023524
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211118
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLepton Number-Driven Sterile Neutrino Production in the Early Universe
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