@phdthesis{13258,
  author = {Tanya Roussy},
  title = {A new limit on the electron’s electric dipole moment},
  abstract = {<p>Physicists have been able to describe our entire universe using just two mathematical models:<br />
General Relativity, for gravity, and the Standard Model, for everything else. While the<br />
Standard Model has been tested to exquisite precision and is generally successful, it has some<br />
serious inconsistencies: it fails, for example, to explain why matter dominates over antimatter in<br />
our universe. New models aiming to eliminate these inconsistencies often introduce additional<br />
symmetry violation, which in turn results in symmetry-violating properties in fundamental particles<br />
like electrons. In particular, many new physics theories predict that the electron will have a<br />
non-zero electric dipole moment (EDM) aligned with the spin axis, which violates time-reversal<br />
symmetry. Placing limits on the magnitude of the electron EDM directly constrains new physics<br />
theories at energies beyond the reach of the Large Hadron Collider. Here we present a new<br />
experimental limit on the electron’s electric dipole moment using trapped HfF<sup>+</sup> in rotating bias<br />
fields: |de| &lt; 4.4 × 10<sup>−30</sup> e·cm. Our measurement is a factor of 2.5 better than the previous best<br />
limit.</p>
},
  year = {2022},
  journal = {Department of Physics},
  volume = {Ph.D.},
  pages = {255},
  month = {2022/08},
  publisher = {University of Colorado},
  address = {Boulder},
}