Meson and Quark Degrees of Freedom and the Radius of the Deuteron

Details Meson and Quark Degrees of Freedom and the Radius of the Deuteron Meson and Quark Degrees of Freedom and the Radius of the Deuteron

1996-10-11

arxiv.org/abs/nucl-th/9610018v1

Few Body Syst. 21 (1996) 149-165

Physics

Nuclear Physics

Nuclear Theory

20 pages, LaTeX, 4 Postscript figures, to appear in Few-Body-Systems

Scientific paper

10.1007/s006010050045

The existing experimental data for the deuteron charge radius are discussed. The data of elastic electron scattering are inconsistent with the value obtained in a recent atomic physics experiment. Theoretical predictions based on a nonrelativistic description of the deuteron with realistic nucleon-nucleon potentials and with a rather complete set of meson-exchange contributions to the charge operator are presented. Corrections arising from the quark-gluon substructure of the nucleon are explored in a nonrelativistic quark model; the quark-gluon corrections, not accounted for by meson exchange, are small. Our prediction for the deuteron charge radius favors the value of a recent atomic physics experiment.

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