Dark Population Transfer Mechanism for Sterile Neutrino Dark Matter
Journal Article
·
· Physical Review Letters
- University of California, San Diego, La Jolla, CA (United States)
- University of California, San Diego, La Jolla, CA (United States); University of California, Berkeley, CA (United States)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); University of Minnesota, Minneapolis, MN (United States)
- University of California, San Diego, La Jolla, CA (United States); Max-Planck-Institut für Kernphysik, Heidelberg (Germany)
We present a mechanism for producing a cosmologically significant relic density of one or more sterile neutrinos. This scheme invokes two steps: First, a population of “heavy” sterile neutrinos is created by scattering-induced decoherence of active neutrinos. Second, this population is transferred, via sterile neutrino self-interaction-mediated scatterings and decays, to one or more lighter mass (∼10 keV to ∼1 GeV) sterile neutrinos that are far more weakly (or not at all) mixed with active species and could constitute dark matter. Dark matter produced this way can evade current electromagnetic and structure-based bounds, but may nevertheless be probed by future observations.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- Heising-Simons Foundation; National Science Foundation (NSF); USDOE
- Grant/Contract Number:
- AC02-76SF00515; FG02-00ER41132; FG02-87ER40328
- OSTI ID:
- 2475441
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 133; ISSN 1079-7114; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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