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Title: Origin of sterile neutrino dark matter via secret neutrino interactions with vector bosons

Journal Article · · Physical Review D
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Northwestern Univ., Evanston, IL (United States); Univ. of California, Berkeley, CA (United States)
  3. Loyola Univ. Chicago, IL (United States)
  4. Carleton Univ., Ottawa, ON (Canada)

Secret neutrino interactions can play an essential role in the origin of dark matter. We present an anatomy of production mechanisms for sterile neutrino dark matter, a keV-scale gauge-singlet fermion that mixes with active neutrinos, in the presence of a new vector boson mediating secret interactions among active neutrinos. We identify three regimes of the vector boson’s mass and coupling where it makes a distinct impact on dark matter production through the dispersion relations and/or scattering rates. We also analyze models with gauged Lμ-Lτ and B-L numbers which have a similar dark matter cosmology but different vector boson phenomenology. We derive the parameter space in these models where the observed relic abundance is produced for sterile neutrino dark matter. They serve as a well-motivated target for the upcoming experimental searches.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1634269
Alternate ID(s):
OSTI ID: 1633750
Report Number(s):
arXiv:2005.03681; FERMILAB-PUB-20-181-T; NUHEP-TH/20-02; PRVDAQ; oai:inspirehep.net:1794912; TRN: US2201232
Journal Information:
Physical Review D, Vol. 101, Issue 11; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Figures / Tables (8)


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