New SubmissionCesium Electric Dipole Moment Experiment as a Test of Models of Dark Matter

Many models of Dark Matter predict an electron electric dipole moments (EDM), making an electron EDM experiment a reasonable test of these models, independent of the presence of dark matter in the local region of the Galaxy.

The ratio R of an electron EDM to a cesium atom EDM is reliably known [1] because the calculation of R is very similar to the calculation of parity violation effects in cesium [1]. Cesium parity violation calculations [1,2] yield agreement between experiment [3] and Standard Model prediction at the one percent level [1-3].

A series of precision measurements to search for an electron EDM in cesium has begun. The experiments use laser-cooled cesium atoms in free space. The experimental sensitivity will be measured and sources of systematic error will be mapped. Statistical sensitivity and systematic limits will be presented.

[1] See, for example; B.M. Roberts, V. A. Dzuba, & V. V. Flambaum, Phys. Rev. A88 042507 (2013).

[2] See, for example, B.K. Sahoo, B. P. Das, & H. Spiesberger, Phys. Rev. D103, L111303 (2021).

[3] C.S. Wood et al Science 275, 1759 (1997).