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arXiv · 2111.07204

Neutrino collective effects and sterile neutrino production in the early universe

R. F. Sawyer
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Abstract

Neutrino-neutrino interactions, as mediated by standard model Z exchange, can drastically enhance the Dodelson-Widrow mechanism for the production of sterile neutrinos in the region of temperature $5-15$MeV. For a sterile mass in the KeV region with the usual type of active-sterile neutrino coupling, the production can be copious enough to provide ample dark matter, even when the active-sterile coupling is small enough to avoid the bounds set by laboratory results.

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R. F. Sawyer. 2021-11-13. Neutrino collective effects and sterile neutrino production in the early universe. https://arxiv.org/abs/2111.07204

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