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  Minimal sterile neutrino dark matter

Bringmann, T., Depta, P. F., Hufnagel, M., Kersten, J., Ruderman, J. T., & Schmidt-Hoberg, K. (2023). Minimal sterile neutrino dark matter. Physical Review D, 107(7): L071702. doi:10.1103/PhysRevD.107.L071702.

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 Creators:
Bringmann, Torsten, Author
Depta, Paul Frederik1, Author           
Hufnagel, Marco, Author
Kersten, Joern, Author
Ruderman, Joshua T., Author
Schmidt-Hoberg, Kai, Author
Affiliations:
1Division Prof. Dr. Manfred Lindner, MPI for Nuclear Physics, Max Planck Society, ou_904549              

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 Abstract: We propose a novel mechanism to generate sterile neutrinos νs in the early Universe, by converting ordinary neutrinos να in scattering processes νsνα → νsνs. After initial production by oscillations, this leads to an exponential growth in the νs abundance. We show that such a production regime naturally occurs for self-interacting νs, and that this opens up significant new parameter space where νs make up all of the observed dark matter. Our results provide strong motivation to further push the sensitivity of X-ray line searches, and to improve on constraints from structure formation.

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 Dates: 2023-04-24
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevD.107.L071702
 Degree: -

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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 107 (7) Sequence Number: L071702 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258