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.

arXiv comment17 pages, 2 figures

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Cited by in corpus (6)

• 50 Years of Quantum Chromodynamics
• Electromagnetic Structure of Few-Nucleon Ground States
• Covariant Spectator Theory of $np$ scattering: Deuteron form factors
• Coincidence charged-current neutrino-induced deuteron disintegration
• Chiral Electroweak Currents in Nuclei
• Removal of singularities from the covariant spectator theory