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Updated: Jul 29, 2025

Site Directed Spin Labeling and EPR Spectroscopic Studies of Pentameric Ligand-Gated Ion Channels
Published on: July 4, 2016
Sensitivity of Spin-Precession Axion Experiments
Jeff A Dror1, Stefania Gori1, Jacob M Leedom2
1Department of Physics, University of California Santa Cruz, 1156 High St., Santa Cruz, California 95064, USA and Santa Cruz Institute for Particle Physics, 1156 High St., Santa Cruz, California 95064, USA.
Abstract:
We study the signal and background that arise in nuclear magnetic resonance searches for axion dark matter, finding key differences with the existing literature. We find that spin-precession instruments are much more sensitive than what has been previously estimated in a sizable range of axion masses, with sensitivity improvement of up to a factor of 100 using a ^{129}Xe sample. This improves the detection prospects for the QCD axion, and we estimate the experimental requirements to reach this motivated target. Our results apply to both the axion electric and magnetic dipole moment operators.
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