Lepton Number-Driven Sterile Neutrino Production in the Early Universe

Details Lepton Number-Driven Sterile Neutrino Production in the Early Universe Lepton Number-Driven Sterile Neutrino Production in the Early Universe

2008-02-22

arxiv.org/abs/0802.3377v3

Phys.Rev.D78:023524,2008

Astronomy and Astrophysics

Astrophysics

15 pages, 7 figures; matches published version

Scientific paper

10.1103/PhysRevD.78.023524

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.

Affiliated with

Also associated with

No associations

Rating

Lepton Number-Driven Sterile Neutrino Production in the Early Universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Lepton Number-Driven Sterile Neutrino Production in the Early Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lepton Number-Driven Sterile Neutrino Production in the Early Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-571118