Search for Axionlike Dark Matter through Nuclear Spin Precession in Electric and Magnetic Fields

Aug 21, 2017
9 pages
Published in:
  • Phys.Rev.X 7 (2017) 4, 041034
  • Published: Nov 14, 2017
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Abstract: (APS)
We report on a search for ultralow-mass axionlike dark matter by analyzing the ratio of the spin-precession frequencies of stored ultracold neutrons and Hg199 atoms for an axion-induced oscillating electric dipole moment of the neutron and an axion-wind spin-precession effect. No signal consistent with dark matter is observed for the axion mass range 10-24≤ma≤10-17  eV. Our null result sets the first laboratory constraints on the coupling of axion dark matter to gluons, which improve on astrophysical limits by up to 3 orders of magnitude, and also improves on previous laboratory constraints on the axion coupling to nucleons by up to a factor of 40.
  • axion: coupling
  • axion: dark matter
  • axion: mass
  • n: electric moment
  • spin: precession
  • nucleus: spin
  • magnetic field
  • electric field
  • oscillation
  • gluon: coupling