Theoretical study of low-lying electronic terms and transition moments for $\mathrm{Hf}{\mathrm{F}}^{+}$ for the electron electric-dipole-moment search

We report ab initio relativistic 20-electron correlation calculations of electric-dipole transition moments for nine low-lying electronic states of $\mathrm{Hf}{\mathrm{F}}^{+}$, which it is suggested to be used in experiments to search for the electric-dipole moment of the electron. Radiative lifetimes for the lowest vibrational levels of the first excited ${}^3\Delta _1$ electronic state are calculated and its population scheme is suggested. The influence of correlation of the $4f$ electrons of Hf is studied.

Figure 1

(Color online) Calculated potential energy curves of the $\mathrm{Hf}{\mathrm{F}}^{+}$.