In the Standard Model, electron EDMs are probably too small to observe. But some models of dark matter, baryon excess, axion production, and especially Supersymmetry generate much larger electron EDMs.
Many Supersymmetry calculations predict electron EDMs larger than experimental limits. No experiment has yet claimed to observe an EDM in any system, and over 50 experiments have null results.
Alkali atoms are well understood: The enhancement of the electron's EDM in Cs or Fr is established from field theory. Sensitivity to an EDM and to major systematic effects can be independently determined in Cs and Fr fountain experiments.
After a proof-of-principle Cs fountain EDM experiment, we are developing new prototypes fountains to test parts of the EDM experiments that involving extremely small magnetic field and large electric field.
EDM experiments need shielding to reduce magnetic fields and magnetic field noise. We have discovered some unexpected properties of common shielding material that can affect many sensitive experiments.
Beam transport simulation shows how, with magnetic focusing, >70% of the atoms in a cloud of cold atoms survive multiple bounces from the end of a solenoid. An apparatus is being assembled to test our simulations. This may have application to BECs.
Information: positions available, collaborations, and funding.
Who we are: current active members, collaborators, alumni
Past accomplishments: EDM related, accelerator based atomic physics, accelerator and high energy physics.