PRECISION MEASUREMENTS IN ATOMIC CESIUM-133

<p dir="ltr">Atomic parity violation measurements facilitate tests of the standard model in a tabletop platform. This parity violating effect is caused by the weak force interaction that slightly mixes states of opposite parity and weakly allows electric dipole transitions. Precision determinations of the extremely weak parity violating transition amplitude rely on interference techniques to amplify this weak transition. The strength of this interfering transition is critical in evaluating the parity violating amplitude and is the primary focus of this work. Here we discuss several measurements in atomic cesium-133 that aid in our understanding of atomic parity violation. We have remeasured the relative strength of the scalar and vector transition polarizabilities on the 6s ²S_1/2 ->7s ²S_1/2 transition to better that 0.1%. We have measured the static Stark polarizability on the 6s ²S_1/2 -> 7s ²S_1/2 transition to better than 0.04%. With this value we also reevaluate the reduced electric dipole matrix elements <7s||r||7p_J >. We use these new matrix elements to reevaluate the calculated scalar transition polarizability on the 6s ²S_1/2 -> 7s ²S_1/2 transition. Finally, we have also measured hyperfine intervals on the 12s ²S_1/2, 13s ²S_1/2, 11d ²D_J , and 6p ²P_J levels.</p>