Progress Towards Precision Measurement in SrOH

Precision measurements in trapped polyatomic molecules can probe Beyond Standard Model (BSM) physics at the PeV scale. The PolyEDM Collaboration is building up an experiment to laser cool and trap SrOH to measure the electric dipole moment of the electron, a signature of new CP-violating physics. Linear polyatomic molecules like SrOH leverage the intrinsic new physics sensitivity of the molecule with the ability to both laser cool the molecules and the presence of bending mode parity doublets for robust rejection of systematic errors. Here we report on progress on Stark and Zeeman spectroscopy of the EDM-sensitive SrOH bending mode.