Hyperfine structure of the first rotational level in H$_2$, D$_2$ and HD molecules and the deuteron quadrupole moment

Mariusz Puchalski; Jacek Komasa; Krzysztof Pachucki

doi:10.1103/PhysRevLett.125.253001

paper

Hyperfine structure of the first rotational level in H $_{2}$ , D $_{2}$ and HD molecules and the deuteron quadrupole moment

arXiv:2010.06888 · doi:10.1103/PhysRevLett.125.253001

Abstract

We perform the four-body calculation of the hyperfine structure in the first rotational state $J = 1$ of the H $_{2}$ , D $_{2}$ , and HD molecules and determine the accurate value for the deuteron electric quadrupole moment $Q_{d} = 0.285 699 (15) (18)$ fm $^{2}$ in significant disagreement with former spectroscopic determinations. Our results for the hyperfine parameters agree very well with the currently most accurate molecular-beam magnetic resonance measurement performed several decades ago by N.F. Ramsey and coworkers. They also indicate the significance of previously neglected nonadiabatic effects. Moreover, a very good agreement with the recent calculation of $Q_{d}$ based on the chiral effective field theory, although much less accurate, indicates the importance of the spin dependence of nucleon interactions in the accurate description of nuclei.

6 pages, 1 figure, improved numerics

Hyperfine structure of the first rotational level in H $_{2}$ , D $_{2}$ and HD molecules and the deuteron quadrupole moment

Abstract

References in corpus (5)

Cited by in corpus (8)

Hyperfine structure of the first rotational level in H2​, D2​ and HD molecules and the deuteron quadrupole moment

Abstract

References in corpus (5)

Cited by in corpus (8)

Hyperfine structure of the first rotational level in H $_{2}$ , D $_{2}$ and HD molecules and the deuteron quadrupole moment