Deuteron-nucleus elastic scattering at intermediate energies is analysed
using a deuteron interaction obtained from the covariant folding of recent
energy- and atomic-mass-number-dependent global Dirac-phenomenology
nucleon-nucleus potentials. The effects of allowing the nucleons in the
deuteron to interact with the target with a variable energy, determined by
their relative momentum, are studied for the first time. The inclusion of
these effects in parameter-free calculations of cross section and
polarization observables for deuteron elastic scattering on
24Mg, 40Ca and 58Ni improves the
agreement with the data at deuteron energies of 400 and 700 MeV and is
particularly strong at 400 MeV.
The deuteron deep inelastic unpolarized structure function F D 2 is calculated using the Wilson operator product expansion method. The long distance behaviour, related to the deuteron bound state properties, is evaluated using the Bethe-Salpeter equation with one particle on-mass-shell. The calculation of the ratio F 2 D /2F 2 N is compared with other convolution models showing important deviations in the region of large x. The implications in the evaluation of the neutron structure function from combined data on deuterons and protons are discussed.
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