***HQOC Special Seminar***
**Wednesday, January 22nd at 2:00 PM, Lyman 425**
Nick Hutzler, Doyle Lab Graduate Student, Harvard University
A New Limit on the Electron Electric Dipole Moment
The electron is expected to have and electric dipole moment (de), though it has so far
eluded experimental observations. While the Standard Model’s prediction for de is still
far beyond any foreseeable experiment, new physical theories (especially Supersymmetry)
predict values for de that are near the experimental limit. The ACME Collaboration
recently performed a search for de via a precision spin precession measurement in a beam
of polar ThO molecules. Our measurement did not see any evidence for a non-zero de, but we
did sent the limit |de| < 8.7 × 10-29 e cm. This represents an order of magnitude
improvement over the previous best limit, and places tighter restrictions on new physics
beyond the Standard Model.
Joan Hamilton
Faculty Assistant to Profs. Greiner and Lukin
HQOC Laboratory Administrator
HUCTW Local Union Representative
Harvard University
Department of Physics
17 Oxford Street
Cambridge, MA 02138
P: (617) 496-2544
F: (617) 496-2545
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