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The prospect of laser cooling of polyatomic molecules has opened a new avenuein the search for the electric dipole moment of the electron (eEDM). An upperbound on the eEDM would probe new physics arising from beyond the StandardModel of elementary particles. In this work, we report the first theoreticalresults for the effective electric field experienced by the electron in YbOH,and its molecular electric dipole moment, using a relativistic coupled clustertheory. We compare these two properties of YbOH with YbF, which also has asingly unoccupied orbital on the Yb ion. We also present the results of theeffective electric field for different bond angles, which sheds light on thesensitivity that can be expected from an eEDM experiment with YbOH.

Enhanced sensitivity of the electron electric dipole moment from YbOH: The role of theory