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NPA Seminar, Trevor Wright, University of Colorado, Boulder “A New Bound on the Electron’s Electric Dipole Moment”
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US/Eastern
WL 216
WL 216
Description
The Standard Model cannot explain the dominance of matter over anti-matter in our universe, which indicates the existence of undiscovered time-reversal (T) symmetry violation. Proposed particle physics theories predict new particles that violate T-symmetry, which generically induce an electric dipole moment in the electron (eEDM). I will present the most precise measurement of the eEDM to date using electrons confined inside molecular ions, subject to a huge intra-molecular electric field, and evolving coherently for up to three seconds. Our result is consistent with zero and improves on the previous upper bound of the eEDM by a factor of ∼ 2.4. Our sensitivity to 10^−19 eV shifts in molecular ions provides constraints on broad classes of new physics at energies an order of magnitude beyond the direct reach of the Large Hadron Collider.
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