New Molecular Systems for Precision Measurements of CP Violation

One promising way to probe physics beyond the Standard Model is to search for symmetry-violating electromagnetic moments of fundamental particles, including the electron electric dipole moment or nuclear Schiff moment. Precision spectroscopy of molecules is an especially powerful approach, already testing new physics at energy scales of tens of TeV. To push further toward the PeV regime, new molecules that have enhanced sensitivity and/or allow advanced quantum control are needed. In this talk, we will report on our work building molecules that are optimized for next-generation precision measurements. We will describe two approaches that allow us to engineer parity doublets and laser coolability into the same molecule: (1) high-angular momentum states in DyO and (2) molecules assembled from one coinage metal atom and one carbon-group atom, e.g. AuPb. After providing the intuition underlying these "designer" molecules, we will report on recent spectroscopic results that establish both classes of molecules as promising probes for near-future precision measurements.