Electric Dipole Moments from Axion-Like Particle Dark Matter Background

2025/09/16 by Jason L. Evans, Nan Li, Evans, Jason L. +3
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · pdf · doi:10.48550/arxiv.2509.12869

openalex publication_date 2025/09/16 · openalex created_date 2025/10/18 · openalex updated_date 2026/07/28

Abstract

New one- and two-loop contributions to the lepton's and nucleon's EDM, which are induced by an axion-like particle dark matter background, are examined. These contributions include effects from CP-violating ALP interactions with photons, leptons and nucleons. The contribution to the EDM is so larger it leads to new constraints on the CP violating couplings of axion-like particles, if the axion-like particle mass is smaller than 10^-11 eV.

Citations

• Effective two-loop background contributions to g_e-2
• CP-Violating Axions: A Theory Review
• Electron g-2 corrections from axion dark matter
• Effect of Ultralight Dark Matter on g-2 of the Electron
• Ultra-light dark matter

Related

• Electric Dipole Moments From Missed Dark Matter Scattering
• On the fermionic couplings of axionic dark matter
• Effective two-loop background contributions to g_e-2
• Generating Sizable Real and Imaginary τ Electric Dipole Moment
• Searching for Axion Dark Matter in Atoms: Oscillating Electric Dipole Moments and Spin-Precession Effects