0000000001082697
AUTHOR
Werner Fabian
Comment on the Deuteron Structure FunctionA(q2)at High Momentum Transfers
Calculations of A (q/sup 2/) were performed for various NN potentials and electromagnetic nucleon form factors at q/sup 2/=0--160 fm/sup -2/ with inclusion of isobar configurations and meson exchange currents, indicating that recent elastic electron scattering experiments do not rule out the existence of isobar configurations and meson exchange currents in the deuteron as has been conjectured. (AIP)
Observation of Meson-Exchange Effects in Deuteron Electrodisintegration
Electrodisintegration of the deuteron has been measured for an incident energy of 300 MeV at 30\ifmmode^\circ\else\textdegree\fi{} and 90\ifmmode^\circ\else\textdegree\fi{} scattering angles. The maximum energy transfer was 116 MeV. Very good agreement with theory was achieved when the pionic-exchange currents were included. Near the threshold and for momentum transfer $\stackrel{\ensuremath{\rightarrow}}{\mathrm{q}}_{\mathrm{c}.\mathrm{m}.}^{}{}_{}{}^{2}=3.9$ ${\mathrm{fm}}^{\ensuremath{-}2}$, the meson-exchange currents contribute about 40% to the total cross section.
Meson exchange and isobar admixture contributions to elastic electron-deuteron scattering
The deuteron structure functions for elastic electron scattering and the deuteron static properties have been calculated with the inclusion of isobar admixtures to the deuteron wave function and meson exchange currents. At higher momentum transfers the structure functions are increased significantly because of the strong enhancement of the deuteron magnetic dipole form factor. Roughly 15–35% of this enhancement depending on the momentum transfer arise from the meson exchange currents.