Electric dipole moments, present and future
I.B. Khriplovich
TL;DR
This paper reviews current experimental limits on electric dipole moments of particles and atoms, discusses their implications for fundamental symmetries, and explores future experimental prospects for detecting CP violation.
Contribution
It provides a comprehensive overview of existing bounds on EDMs and highlights the potential of ion storage rings for future high-sensitivity measurements.
Findings
Neutron and atomic EDM bounds are comparable.
Current limits strongly constrain P odd, T even interactions.
Ion storage rings could improve sensitivity to EDMs by orders of magnitude.
Abstract
Upper limits on the electric dipole moments (EDM) of elementary particles and atoms are presented, and their physical implications are discussed. The bounds following from the neutron and atomic experiments are comparable. In particular, they strongly constrain P odd, T even interactions. The nuclear EDMs can be studied at ion storage rings, with the expected sensitivity much better than cm. It would be a serious progress in the studies of the CP violation.
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