Affiliation:
1. QDM Laboratory Department of Physics University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia
2. Center for Astrophysics and Supercomputing Swinburne University of Technology John St Hawthorn VIC 3122 Australia
3. School of Physics Physics Road The University of Sydney Camperdown Sydney NSW 2006 Australia
4. ARC Center of Excellence For Engineered Quantum Systems The Australian National University Canberra ACT 2600 Australia
Abstract
AbstractAxions are a well‐motivated dark matter candidate, with a host of experiments around the world searching for direct evidence of their existence. The ORGAN Experiment is a type of axion detector known as an axion haloscope, which takes the form of a cryogenic resonant cavity embedded in a strong magnetic field. ORGAN recently completed Phase 1a, a scan for axions ≈65 µeV, and placed the most stringent limits to date on the dark matter axion–photon coupling in this region, . It has been shown that axion haloscopes such as ORGAN are automatically sensitive to other kinds of dark matter candidates, such as dark photons, scalar field/dilaton dark matter, and exotic axion–electromagnetic couplings motivated by quantum electromagnetodynamics. The exclusion limits placed on these various dark matter candidates are computed by ORGAN 1a, and sensitivity for some future ORGAN phases are projected. In particular, the dark photon limits are the most sensitive to date in some regions of the parameter space.
Funder
Australian Research Council
Forrest Research Foundation
Subject
General Physics and Astronomy
Cited by
6 articles.
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