Covariant Spectator Theory of np scattering: Deuteron Quadrupole Moment

Abstract

The deuteron quadrupole moment is calculated using two CST model wave functions obtained from the 2007 high precision fits to $np$ scattering data. Included in the calculation are a new class of isoscalar $np$ interaction currents automatically generated by the nuclear force model used in these fits. The prediction for model WJC-1, with larger relativistic P-state components, is 2.5% smaller that the experimental result, in common with the inability of models prior to 2014 to predict this important quantity. However, model WJC-2, with very small P-state components, gives agreement to better than 1%, similar to the results obtained recently from $\chi$EFT predictions to order N${}^3$LO.

17 pages, 2 figures

References in corpus (6)

• Covariant spectator theory of np scattering: Phase shifts obtained from precision fits to data below 350 MeV
• Nuclear effects in the proton-deuteron Drell-Yan process
• Momentum distributions for ${}^2$H$(e,e^{\prime }p)$
• Exchange current contributions in null-plane quantum models of elastic electron deuteron scattering
• Covariant Spectator Theory of np scattering: Deuteron magnetic moment and form factors
• Covariant Spectator Theory of np scattering: Isoscalar interaction currents

Cited by in corpus (2)

• 50 Years of Quantum Chromodynamics
• Removal of singularities from the covariant spectator theory