Search for the electron electric dipole moment using $\Omega$-doublet levels in PbO${}^{\ast }$

Abstract

We present results of the first experiment to probe for the electric dipole moment (EDM) of the electron using an $\Omega$-doublet state in a polar molecule. If the molecule is both massive and has a large molecular-fixed frame dipole moment, then the $\Omega$-doublet states have the potential to greatly increase the sensitivity of experiments searching for the EDM while also allowing for new methods of systematic error rejection. Here, we use the metastable $a(1{)}^3{\Sigma }^{+}$ state of lead monoxide (PbO) to probe for the electron EDM. Our best fit for the electron EDM of $d_e = (-4.4\pm9.5_\text{stat}\pm1.8_\text{syst})\times10^{-27}\ecm$ allows us to place an upper limit on the magnitude of the EDM of $|d_e|<1.7\times10^{-26}\ecm$ (90% confidence). While this is less stringent than limits from other, previous experiments, our work emphasizes the systematic error rejection properties associated with the $\Omega$-doublet level structure. The results should inform the work of other, ongoing experiments that use molecules with analogous level structure.

20 pages, 14 figures

References in corpus (4)

• Improved limit on the permanent electric dipole moment of 199Hg
• Candidate molecular ions for an electron electric dipole moment experiment
• Enhancement of the electric dipole moment of the electron in PbO
• A limit on the electron electric dipole moment using paramagnetic ferroelectric Eu${}_{0.5}$Ba${}_{0.5}$TiO${}_3$

Cited by in corpus (38)

• Search for New Physics with Atoms and Molecules
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Electric Dipole Moments of the Atoms, Molecules, Nuclei and Particles
• A precision measurement of the electron's electric dipole moment using trapped molecular ions
• Laser cooling and slowing of CaF molecules
• Ultracold molecules for measuring the electron's electric dipole moment
• Electric Dipole Moments in Two-Higgs-Doublet Models
• Measuring the electric dipole moment of the electron in BaF
• Precision Spectroscopy of Polarized Molecules in an Ion Trap
• Parity and Time-Reversal Violation in Atomic Systems
• Parity-violating interactions of cosmic fields with atoms, molecules, and nuclei: Concepts and calculations for laboratory searches and extracting limits
• Searches for topological defect dark matter via non-gravitational signatures
• Enhancement factor for the electric dipole moment of the electron in the BaOH and YbOH molecules
• Methods for measuring the electron EDM using ultracold YbF molecules
• Methods, Analysis, and the Treatment of Systematic Errors for the Electron Electric Dipole Moment Search in Thorium Monoxide
• CeNTREX: A new search for time-reversal symmetry violation in the ${}^{205}$Tl nucleus
• Oriented polar molecules in a solid inert-gas matrix: a proposed method for measuring the electric dipole moment of the electron
• Measurement of the variation of electron-to-proton mass ratio using ultracold molecules produced from laser-cooled atoms
• Measuring gravity by holding atoms
• Zeeman interaction in ThO $H^3{\Delta }_1$ for the electron EDM search
• Spin-dependent exotic interactions
• Observation and laser spectroscopy of ytterbium monomethoxide, YbOCH${}_3$
• Principles and design of a Zeeman-Sisyphus decelerator for molecular beams
• Frequency shifts and relaxation rates for spin 1/2 particles moving in electromagnetic fields
• Characterizing the Fundamental Bending Vibration of a Linear Polyatomic Molecule for Symmetry Violation Searches
• Theoretical investigation of the HgF radical towards laser cooling and eEDM measurement
• Limits on $CP$-violating hadronic interactions and proton EDM from paramagnetic molecules
• Screening and enhancement of oscillating electric field in molecules
• Global analysis of CP-violation in atoms, molecules and role of medium-heavy systems
• Laser spectroscopy of cold molecules
• Prospects for measuring the electron's electric dipole moment with polyatomic molecules in an optical lattice
• Optical stimulated slowing of polar heavy-atom molecules with a constant beat phase
• Vibrational Branching Ratios for Laser-Cooling of Nonlinear Strontium-Containing Molecules
• Laser spectroscopy and CP-violation sensitivity of actinium monofluoride
• Estimation of CP violating EDMs from known mechanisms in the SM
• High-Efficiency Quantum-State Detection of ThF${}^{+}$ with Resonance-Enhanced Multiphoton Asymmetric Dissociation
• A survey of nuclear quadrupole deformation in order to estimate the nuclear MQM and its relative contribution to the atomic EDM
• Ultracold high-spin $\Sigma$-state polar molecules for new physics searches