Journal of High Energy Physics

, 2011:45

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Maximal electric dipole moments of nuclei with enhanced Schiff moments

  • John EllisAffiliated withTheory Division, CERNTheoretical Particle Physics and Cosmology Group, Department of Physics, King’s College London
  • , Jae Sik LeeAffiliated withPhysics Division, National Center for Theoretical Sciences Email author 
  • , Apostolos PilaftsisAffiliated withSchool of Physics and Astronomy, University of Manchester


The electric dipole moments (EDMs) of heavy nuclei, such as 199Hg, 225Ra and 211Rn, can be enhanced by the Schiff moments induced by the presence of nearby parity-doublet states. Working within the framework of the maximally CP-violating and minimally flavour-violating (MCPMFV) version of the MSSM, we discuss the maximal values that such EDMs might attain, given the existing experimental constraints on the Thallium, neutron and Mercury EDMs. The maximal EDM values of the heavy nuclei are obtained with the help of a differential-geometrical approach proposed recently that enables the maxima of new CP-violating observables to be calculated exactly in the linear approximation. In the case of 225Ra, we find that its EDM may be as large as 6 to 50 × 10−27 e ∙ cm.


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