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)
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(3+1) SchemeThe LSND + MiniBooNE anomalies & the react<strong>or</strong> antineutrino anomalyalso hint at 1 <strong>or</strong> 2 sub-eV sterile ’s (Y<strong>as</strong>uda’s talk).They could be thermally excited in the early Universe via oscillations<strong>or</strong> 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)