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

  title={Origin of sterile neutrino dark matter via secret neutrino interactions with vector bosons},
  author={Kevin J. Kelly and Manibrata Sen and Walter Tangarife and Yue Zhang},
  journal={Physical Review D},
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… 

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