%0 Thesis %A Toh, Yao De George %D 2019 %T Progress towards a new parity non-conservation measurement in cesium-133 %U https://hammer.purdue.edu/articles/thesis/Progress_towards_a_new_parity_non-conservation_measurement_in_cesium-133/8297531 %R 10.25394/PGS.8297531.v1 %2 https://hammer.purdue.edu/ndownloader/files/15547862 %K cesium %K parity nonconservation %K atomic parity violation %K precision measurements %K electric dipole %K matrix elements %K polarizability %K lifetime measurement %K lifetime %K atomic physics %K atomic molecular and optical %K AMO %K Electrical and Electronic Engineering not elsewhere classified %K Atomic Physics %X 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 (EPNC) 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 EPNC measurement. Key systematics are also described. For an accurate determination of EPNC, properties of cesium such as the scalar (α) and vector (β) transition polarizabilities are needed. I present improved determinations of keyelectric dipole matrix elements, and calculate new high precision determinations of α and β. Finally, using β and the previously measured value of EPNC, I calculate new values for the weak charge of the cesium nucleus Qw.
%I Purdue University Graduate School