Rejecting the Majorana nature of dark matter with electron scattering experiments

  title={Rejecting the Majorana nature of dark matter with electron scattering experiments},
  author={Riccardo Catena and Timon Emken and Julia Ravanis},
  journal={arXiv: High Energy Physics - Phenomenology},
Assuming that Dark Matter (DM) is made of fermions in the sub-GeV mass range with interactions dominated by electromagnetic moments of higher order, such as the electric and magnetic dipoles or the anapole moment, we show that direct detection experiments searching for atomic ionisation events in xenon targets can shed light on whether DM is a Dirac or Majorana particle. Specifically, we find that between about 45 (120) and 610 (1700) signal events are required to reject Majorana DM in favour… Expand
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