Precision spectroscopy of the hydrogen molecular ions HD${}^{+}$

Zhen-Xiang Zhong, Pei-pei Zhang, Zong-Chao Yan +1

Expectation values of the Breit operators and the $Q$ terms are calculated for HD${}^{+}$ with the vibrational number $v=0-4$ and the total angular momentum $L=0-4$. Relativistic and r…