Electromagnetic properties of dark matter: dipole moments and charge form factor

Understand

A neutral dark matter particle may possess an electric dipole moment (EDM) or a magnetic dipole moment (MDM), so that its scattering with nuclei is governed by electromagnetic interactions.

• If the moments are associated with relevant operators of dimension-5, they may be detectable in direct search experiments.
• We calculate complete expressions of the scattering cross sections and the recoil energy spectra for dark matter with these attributes.
• We also provide useful formulae pertinent to dark matter that interacts via an electric charge form factor (CFF) which is related to the charge radius defined by an effective dimension-6 operator.