Deuteron threshold electrodisintegration at high momentum transfer

W M. Schmitt, Massachusetts Institute of Technology
K S. Lee, University of Massachusetts - Amherst
H Baghaei, University of Massachusetts - Amherst
S Churchwell, University of Massachusetts - Amherst
R S. Hicks, University of Massachusetts - Amherst
R Miskimen, University of Massachusetts - Amherst
Gerald Alvin Peterson, University of Massachusetts - Amherst
K Wang, University of Massachusetts - Amherst

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DOI:10.1103/PhysRevC.56.1687 Creative Commons Attribution License 3.0 (cc-BY)

Abstract

Absolute differential cross sections for the threshold electrodisintegration of the deuteron with good resolution were measured at a laboratory scattering angle of 160° for five values of Q2 ranging from 8.66 to 42.4fm-2. Comparisons of the data averaged over Enp from 0 to 3 MeV and from 0 to10 MeV are made with nonrelativistic meson exchange calculations. These calculations are sensitive to the nucleon electromagnetic form factors, nucleon-nucleon potential, and relativistic effects. The data are also compared with a hybrid quark-hadron model calculation that describes the deuteron as a six-quark cluster for the short range part of the interaction. Some of these calculations can describe the data reasonably well over certain ranges of Q2; however, none of these calculations can accurately describe the data over the entire measured Q2 range.