Kavli Affiliate: David W. Miller
| First 5 Authors: Gabe Hoshino, Stefan Knirck, Mohamed H. Awida, Gustavo I. Cancelo, Simon Corrodi
| Summary:
We present the results from the first axion-like particle search conducted
using a dish antenna. The experiment was conducted at room temperature and
sensitive to axion-like particles in the $44-52,mumathrm{eV}$ range ($10.7 –
12.5,mathrm{GHz}$). The novel dish antenna geometry was proposed by the BREAD
collaboration and previously used to conduct a dark photon search in the same
mass range. To allow for axion-like particle sensitivity, the BREAD dish
antenna was placed in a $3.9,mathrm{T}$ solenoid magnet at Argonne National
Laboratory. In the presence of a magnetic field, axion-like dark matter
converts to photons at the conductive surface of the reflector. The signal is
focused onto a custom coaxial horn antenna and read out with a low-noise
radio-frequency receiver. No evidence of axion-like dark matter was observed in
this mass range and we place the most stringent laboratory constraints on the
axion-photon coupling strength, $g_{agammagamma}$, in this mass range at 90%
confidence.
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