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Covariant spectator theory of np scattering: Deuteron quadrupole moment
Gross, Franz Gross, Franz
Gross, Franz
Gross, Franz
Abstract
The deuteron quadrupole moment is calculated using two covariant spectator theory 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 than 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 chiral effective field theory predictions to next-to-next-to-next-to-leading order.
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2015-01-01
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Physics
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https://doi.org/10.1103/PhysRevC.91.014005