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

2019; American Physical Society; Volume: 122; Issue: 12 Linguagem: Inglês

10.1103/physrevlett.122.121802

1092-0145

Jonathan Ouellet, C. Salemi, Joshua W. Foster, Reyco Henning, Zachary Bogorad, J. M. Conrad, J. A. Formaggio, Yonatan Kahn, J.V. Minervini, A. Radovinsky, Nicholas L. Rodd, Benjamin R. Safdi, Jesse Thaler, Daniel Winklehner, L. A. Winslow,

Atomic and Subatomic Physics Research

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 m_{a}≲1 μeV. ABRACADABRA is a new experimental program to search for axion dark matter over a broad range of masses, 10^{-12}≲m_{a}≲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 g_{aγγ}<1.4×10^{-10} and g_{aγγ}<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.