The influence of relativistic contributions to deuteron electrodisintegration is systematically studied in various kinematic regions of energy and momentum transfer. As theoretical framework the equation-of-motion and the unitarily equivalent S-matrix approaches are used. In a (p/M )-expansion, all leading order relativistic π-exchange contributions consistent with the Bonn OBEPQ model are included. In addition, static heavy meson exchange currents including boost terms, γπρ/ω-currents, and ∆-isobar contributions are considered.Sizeable effects from the various relativistic two-body contributions, mainly from π-exchange, have been found in inclusive form factors and exclusive structure functions for a variety of kinematic regions.

The influence of relativistic contributions to elastic electron deuteron scattering is studied systematically at low and intermediate momentum transfers (Q 2 ≤ 30 fm −2 ). In a (p/M )-expansion, all leading order relativistic π-exchange contributions consistent with the Bonn OBEPQ models are included. In addition, static heavy meson exchange currents including boost terms and lowest order ρπγ-currents are considered. Sizeable effects from the various relativistic two-body contributions, mainly from π-exchange, have been found in form factors, structure functions and the tensor polarization T20. Furthermore, static properties, viz. magnetic dipole and charge quadrupole moments and the mean square charge radius are evaluated.

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Longitudinal, transverse, and longitudinal-transverse structure functions for the H(e, e'p) reaction have been determined. Measurements of the cross sections were made in-plane in nearly quasielastic kinematics spanning momentum transfers between 200 and 670 MeV/c and recoil moments between 0 and 150 MeV/c. In addition, cross sections at momentum transfers above 800MeV/c were measured at backward scattering angles in aligned kinematics where the response is predominantly transverse. We compared our data with both relativistic and nonrelativistic models.Our results are not consistently in agreement with any of the calculations based on these models. The disagreement between our data and these calculations ranges froxn 0% to 30%%uo, on average it is about 10'%%uo. Notable discrepancies arise in describing relativistic effects for the longitudinaltransverse structure function, at a momentum transfer of 400 MeV/c as well as for the transverse structure function at momentuxn transfer above 800 MeV/c. PACS number(s): 21.45.+v, 25.10.+s, 25.30.Fj