Hyperfine and Zeeman interactions of the $a(1){[}^3{\Sigma }_1^{+}]$ state of PbO

Abstract

The role of the interaction with the nearest electronic state ${}^3{\Sigma }_{0^{-}}^{+}$ on the hyperfine structure and magnetic properties of the $a(1){[}^3{\Sigma }_1^{+}]$ state of PbO is assessed. The accounting for this contribution leads to difference between $g$-factors of the $J=1$ $\Omega$-doublet levels, $\Delta g=37\times 10^{-4}$, that is in a good agreement with the experimental datum $\Delta g=30(8)\times 10^{-4}$. The contribution of this interaction rapidly grows with $J$. For $J=30$ the difference of $g$-factors of $\Omega$-doublet states reaches 100%; for hyperfine constants it is 18%. These differences also depend on the electric field and for $E=11$ V/cm for ${}^{207}$PbO the difference in $g$-factors turn to zero. The latter is important for suppressing systematic effects in the electron electric dipole moment search experiment.

References in corpus (4)

• Flavour physics of leptons and dipole moments
• Candidate molecular ions for an electron electric dipole moment experiment
• Prospects for an electron electric dipole moment search in metastable ThO and ThF${}^{+}$
• Enhancement of the electric dipole moment of the electron in PbO

Cited by in corpus (20)

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• Electronic matrix elements for parity doubling in YbOH molecule
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