Atomic parity violation measurements provide a way to probe physics beyond the Standard Model. They can provide constraints on conjectures of a massive Z′ bosonor a light boson, or searches of dark energy. Using the two-pathway coherent control technique, our group plans to make a new measurement of the weak interaction induced parity non-conservation (PNC) transition moment (<i>E<sub>PNC</sub></i>) on the cesium 6S→7S transition. We will coherently interfere a 2-photon transition with the Stark and PNC transitions to amplify and extract the PNC amplitude. Previously, our lab has measured the magnetic dipole transition moment on the same 6S→7S transition to about 0.4% uncertainty using this technique. In this dissertation, I discuss improvements made to the system, and review what future upgrades are needed for a new<i> E</i><sub><i>PNC </i></sub>measurement. Key systematics are also described. For an accurate determination of <i>E<sub>PNC</sub></i>, properties of cesium such as the scalar (<i>α</i>) and vector (<i>β</i>) transition polarizabilities are needed. I present improved determinations of keyelectric dipole matrix elements, and calculate new high precision determinations of <i>α</i> and <i>β</i>. Finally, using <i>β</i> and the previously measured value of <i>E<sub>PNC</sub>/β</i>, I calculate new values for the weak charge of the cesium nucleus Q<sub>w</sub>.<br>
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/8297531 |
| Date | 16 August 2019 |
| Creators | Yao De George Toh (6858197) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/Progress_towards_a_new_parity_non-conservation_measurement_in_cesium-133/8297531 |
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