Neutrinos as Hot or Warm Dark Matter (Active + Sterile)
Neutrinos as Hot or Warm Dark Matter (Active + Sterile) Neutrinos as Hot or Warm Dark Matter (Active + Sterile)
(3+1) SchemeThe LSND + MiniBooNE anomalies & the reactor antineutrino anomalyalso hint at 1 or 2 sub-eV sterile ’s (Yasuda’s talk).They could be thermally excited in the early Universe via oscillationsor collisions with active ’s; they are now non-relativistic; and theirnumber density per species is expected to equal that of active ’s.Input: (Li, Xing, Luo 10)
OverdensitiesGravitational clustering: Those cosmic ’s with velocities smaller thanthe escape velocity of a given structure can be bound to it. So largerGC effects for heavier ’s around the Earth (Ringwald, Wong 04).The (3+2) scheme:Input:Overdensity
- Page 1 and 2: Neutrinos as Hot or Warm Dark Matte
- Page 3 and 4: Sub-eV or keV Neutrinos?A purely ph
- Page 5 and 6: As T ~ a few MeV in the Universe, t
- Page 7 and 8: CB Must Be ThereToday’s matter &
- Page 9 and 10: ExampleSalient feature: the cross s
- Page 11 and 12: Cosmic anti-Background?Overdensitie
- Page 13: Hamann et al, arXiv:1006.5276; 1108
- Page 17 and 18: keV sterile Dark MatterThere is no
- Page 19 and 20: keV sterile Dark MatterProduction:
- Page 21 and 22: Detection in the LabThe same method
- Page 23 and 24: Summary----- CB: a test of cosmolog
OverdensitiesGravitational clustering: Those cosmic ’s with velocities smaller thanthe escape velocity of a given structure can be bound to it. So largerGC effects f<strong>or</strong> heavier ’s around the Earth (Ringwald, Wong 04).The (3+2) scheme:Input:Overdensity
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