Missed scattering of axion-like dark matter is argued to induce an apparent electric dipole moment, yielding new, stronger constraints on the ALP-electron and ALP-proton couplings.
Detecting axions via induced electron spin precession
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abstract
We propose a new window to detect axion-like particle (ALP) dark matter from electrically charged fermions, such as electrons and quarks. We specifically consider a direct interaction between the axion and the electron and find that the non-relativistic quantum dynamics induces a spin precession due to the axion and is enhanced by the application of an external electric field. This precession gives a change in magnetic flux which under certain circumstances can yield a detectable signal for SQUID magnetometers.
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Electric Dipole Moments From Missed Dark Matter Scattering
Missed scattering of axion-like dark matter is argued to induce an apparent electric dipole moment, yielding new, stronger constraints on the ALP-electron and ALP-proton couplings.