A5030537999- Atomic and Subatomic Physics Research
- Dark Matter and Cosmic Phenomena
- Advanced Frequency and Time Standards
- Radioactive Decay and Measurement Techniques
- Particle physics theoretical and experimental studies
- Quantum and Classical Electrodynamics
- Atomic and Molecular Physics
University of Colorado Boulder
2023
Joint Institute for Laboratory Astrophysics
2023
The imbalance of matter and antimatter in our Universe provides compelling motivation to search for undiscovered particles that violate charge-parity symmetry. Interactions with vacuum fluctuations the fields associated these new will induce an electric dipole moment electron (eEDM). We present most precise measurement yet eEDM using electrons confined inside molecular ions, subjected a huge intramolecular field, evolving coherently up 3 seconds. Our result is consistent zero improves on...
We have completed an improved precision measurement of the electron's electric dipole moment using trapped ${\mathrm{HfF}}^{+}$ in rotating bias fields. report on accuracy evaluation this measurement, describing mechanisms behind our systematic shifts. Our uncertainty is reduced by a factor 30 compared to first generation [Cairncross et al. Phys. Rev. Lett. 119, 153001 (2017)]. combined statistical and 2 relative any previous [Nature (London) 562, 355 (2018)].
The Standard Model cannot explain the dominance of matter over anti-matter in our universe. This imbalance indicates undiscovered physics that violates combined CP symmetry. Many extensions to seek by predicting existence new particles. Vacuum fluctuations fields associated with these particles can interact known and make small modifications their properties; for example, which violate symmetry will induce an electric dipole moment electron (eEDM). size induced eEDM is dependent on masses...
We have completed a new precision measurement of the electron's electric dipole moment using trapped HfF$^+$ in rotating bias fields. report on accuracy evaluation this measurement, describing mechanisms behind our systematic shifts. Our uncertainty is reduced by factor 30 compared to first generation measurement. combined statistical and improved 2 relative any previous