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29 March 2024 |
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Article overview
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(Almost) Closing the Sterile Neutrino Dark Matter Window with NuSTAR | Kerstin Perez
; Kenny C. Y. Ng
; John F. Beacom
; Cora Hersh
; Shunsaku Horiuchi
; Roman Krivonos
; | Date: |
2 Sep 2016 | Abstract: | We use NuSTAR observations of the Galactic Center to search for X-ray lines
from the radiative decays of sterile neutrino dark matter. Finding no evidence
of unknown lines, we set limits on the sterile neutrino mass and mixing angle.
In most of the mass range 10-50 keV, these are now the strongest limits, at
some masses improving upon previous limits by a factor of ~10. When combined
with constraints on the primordial lepton asymmetry and structure formation,
the allowed mass range of the the $
u$MSM framework is reduced by more than
half. Future NuSTAR observations may be able to cover much of the remaining
parameter space. | Source: | arXiv, 1609.0667 | Services: | Forum | Review | PDF | Favorites |
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