$\mathcal{P},\mathcal{T}$-odd and magnetic hyperfine-interaction constants and excited-state lifetime for ${\mathrm{HfF}}^{+}$

Parity- and time-reversal-symmetry violating interaction constants required for the interpretation of a recent measurement [W. B. Cairncross et al., Phys. Rev. Lett. 119, 153001 (2017)] of corresponding symmetry violations in the $\mathrm{\Omega }=1$ (${{}^3\mathrm{\Delta }}_1$) science state of the ${\mathrm{HfF}}^{+}$ molecular ion are reported. Using a relativistic four-component all-electron multireference configuration interaction model the nucleon-electron scalar-pseudoscalar interaction constant is determined as $W_S=20.0$ [kHz]. An updated result for the electron electric-dipole-moment effective electric field of $|E_{\text{eff}}|=22.7\left[\frac{\mathrm{GV}}{\mathrm{cm}}\right]$ is obtained. Further results of relevance in the context of the search for leptonic charge-parity violation such as the ${}^{177}\mathrm{Hf}$ magnetic hyperfine interaction constant and electronic $G$ tensor for ${\mathrm{HfF}}^{+}$ are presented.