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Measurement of the electron electric dipole moment using YbF molecules. | LitMetric

Measurement of the electron electric dipole moment using YbF molecules.

Phys Rev Lett

Sussex Centre for Optical and Atomic Physics, University of Sussex, Brighton BN1 9QH, United Kingdom.

Published: July 2002

AI Article Synopsis

  • Heavy polar molecules, like YbF, provide a much more sensitive measurement of the electron electric dipole moment (d(e)) compared to heavy atoms due to their larger interaction energy.
  • The first measurement using YbF showed results that, while not as precise as the best atom measurements, are promising since they are primarily limited by counting statistics.
  • This method's strength lies in its ability to minimize systematic errors that typically affect measurements in heavier atoms, showcasing the potential of heavy polar molecules for future research.

Article Abstract

The most sensitive measurements of the electron electric dipole moment d(e) have previously been made using heavy atoms. Heavy polar molecules offer a greater sensitivity to d(e) because the interaction energy to be measured is typically 10(3) times larger than in a heavy atom. We have used YbF to make the first measurement of this kind. Together, the large interaction energy and the strong tensor polarizability of the molecule make our experiment essentially free of the systematic errors that currently limit d(e) measurements in atoms. Our first result d(e) = (-0.2+/-3.2)x10(-26)e cm is less sensitive than the best atom measurement but is limited only by counting statistics and demonstrates the power of the method.

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Source
http://dx.doi.org/10.1103/PhysRevLett.89.023003DOI Listing

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