The pure rotational spectrum of YbOH

Abstract

The pure rotational spectrum of YbOH has been recorded and analyzed to produce fine and magnetic hyperfine parameters for the ${\tilde{X}}^2{\Sigma }^{+}$(0,0,0) state. These parameters are compared with those determined from the optical study [Melville and Coxon, J. Chem. Phys. 115, 6974-6978 (2001)] and with the values for YbF [Dickinson et al. 115, 6979-6989 (2001)]. The results support the existence of an unobserved perturbing state near the ${\tilde{A}}^2{\Pi }_{1/2}$ state, similar to that previously found in YbF. The precisely determined parameters lay the foundation for laser cooling YbOH, which will aid in the search for new physics beyond the standard model.

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• Fine and hyperfine interactions in ${}^{171}$YbOH and ${}^{173}$YbOH
• Calculations of Time-Reversal Symmetry Violation Sensitivity Parameters Based on Analytic Relativistic Coupled-Cluster Gradient Theory
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• Axion-mediated electron-electron interaction in ytterbium monohydroxide molecule
• Parity and time-reversal symmetry violation in diatomic molecules: LaO, LaS and LuO
• Direct measurement of high-lying vibrational repumping transitions for molecular laser cooling
• Electronic matrix elements for parity doubling in YbOH molecule
• Nuclear-Spin Dependent Parity Violation in Optically Trapped Polyatomic Molecules