Proposal for a Cosmic Axion Spin Precession Experiment (CASPEr)
2014; American Physical Society; Volume: 4; Issue: 2 Linguagem: Inglês
10.1103/physrevx.4.021030
ISSN2160-3308
AutoresDmitry Budker, Peter W. Graham, M. P. Ledbetter, Surjeet Rajendran, Alexander O. Sushkov,
Tópico(s)Magnetic Field Sensors Techniques
ResumoWe propose an experiment to search for QCD axion and axionlike-particle dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment. In analogy with nuclear magnetic resonance, these moments cause precession of nuclear spins in a material sample in the presence of an electric field. Precision magnetometry can be used to search for such precession. An initial phase of this experiment could cover many orders of magnitude in axionlike-particle parameter space beyond the current astrophysical and laboratory limits. And with established techniques, the proposed experimental scheme has sensitivity to QCD axion masses ma≲10−9 eV, corresponding to theoretically well-motivated axion decay constants fa≳1016 GeV. With further improvements, this experiment could ultimately cover the entire range of masses ma≲μ eV, complementary to cavity searches.Received 9 July 2013DOI:https://doi.org/10.1103/PhysRevX.4.021030This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.Published by the American Physical Society
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