A robust limit for the electric dipole moment of the electron

Understand

Electric dipole moments constitute a competitive method to search for new physics, being particularly sensitive to new CP-violating phases.

• Given the experimental and theoretical progress in this field and more generally in particle physics, the necessity for more reliable bounds than the ones usually employed emerges.
• We therefore propose an improved extraction of the electric dipole moment of the electron and the relevant coefficient of the electron-nucleon coupling, taking into account theoretical uncertainties and possible cancellations, to be used in model-dependent analyses.
• Specifically, we obtain at 95% C.L.