Precision spectroscopy of the hydrogen molecular ions: present status of theory and experiment

Abstract

We review recent experiments on HD${}^{+}$ spectroscopy. The reduced proton-deuteron mass to electron mass ratio, ${\mu }_{pd}/m_e$, is inferred from the comparison of theory and experiment. Theoretical issues related to the calculations of the spin structure, which are currently the main limiting factor of theoretical accuracy, are discussed.

arXiv comment4 pages, 3 Tables, Proceedings of the Conference on Precision Physics and Fundamental Physical Constants, Slovakia, 2021

References in corpus (6)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Proton-Electron Mass Ratio from Laser Spectroscopy of HD${}^{+}$ at the Part-Per-Trillion Level
• Fundamental transitions and ionization energies of the hydrogen molecular ions at the few ppt level
• Proton-electron mass ratio by high-resolution optical spectroscopy of ion ensembles in the resolved-carrier regime
• Higher-order corrections to spin-spin scalar interactions in HD${}^{+}$ and H${}_2^{+}$
• Ro-vibrational spin-averaged transitions in the hydrogen molecular ions

Cited by in corpus (3)

• Generation of rotational ground state HD${}^{+}$ ions in an ion trap using a resonance-enhanced threshold photoionization process
• Higher-order corrections to the spin-orbit and spin-spin tensor interactions in HD${}^{+}$
• Spin-orbit interaction in the HD${}^{+}$ ion