First Results from ABRACADABRA-10 cm: A Search for Sub-μ\mueV Axion Dark Matter

Oct 29, 2018
7 pages
Published in:
  • Phys.Rev.Lett. 122 (2019) 12, 121802
  • Published: Mar 30, 2019
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Abstract: (APS)
The axion is a promising dark matter candidate, which was originally proposed to solve the strong-CP problem in particle physics. To date, the available parameter space for axion and axionlike particle dark matter is relatively unexplored, particularly at masses ma≲1  μeV. ABRACADABRA is a new experimental program to search for axion dark matter over a broad range of masses, 10-12≲ma≲10-6  eV. ABRACADABRA-10 cm is a small-scale prototype for a future detector that could be sensitive to the QCD axion. In this Letter, we present the first results from a 1 month search for axions with ABRACADABRA-10 cm. We find no evidence for axionlike cosmic dark matter and set 95% C.L. upper limits on the axion-photon coupling between gaγγ<1.4×10-10 and gaγγ<3.3×10-9  GeV-1 over the mass range 3.1×10-10–8.3×10-9  eV. These results are competitive with the most stringent astrophysical constraints in this mass range.
Note:
  • 7 pages, 3 Figures. Submitted to PRL
  • Elementary Particles and Fields
  • new physics: search for
  • new particle
  • axion: dark matter
  • axion: mass
  • coupling: (axion 2photon)
  • coupling constant: upper limit
  • quantum chromodynamics: axion
  • strong interaction: CP
  • axion-like particles