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The 3He(e, e'd)p Reaction in qω-constant Kinematics

C. M. Spaltro, Th. S. Bauer, H. P. Blok, T. Botto, E. Cisbani, R. De Leo, G. E. Dodge, R. Ent, S. Frullani, F. Garibaldi, W. Gloeckle, J. Golak, M. N. Harakeh, M. Iodice, E. Jans, H. Kamada, W. J. Kasdorp, C. Kormanyos, L. Lapikas, A. Misiejuk, S. I. Nagorny, G. J. Nooren, C. J. G. Onderwater, R. Perrino, M. van Sambeek, R. Skibinski, R. Starink, G. van der Steenhoven, J. Tjon, M. A. van Uden, G. M. Urciuoli, H. de Vries, H. Witala, M. Yeomans

nucl-exarXiv:nucl-ex/0201011

Abstract

The cross section for the 3He(e, e'd)p reaction has been measured as a function of the missing momentum pm in qω -constant kinematics at beam energies of 370 and 576 MeV for values of the three-momentum transfer q of 412, 504 and 604 . The L(+TT), T and LT structure functions have been separated for q = 412 and 504 . The data are compared to three-body Faddeev calculations, including meson-exchange currents (MEC), and to calculations based on a covariant diagrammatic expansion. The influence of final-state interactions and meson-exchange currents is discussed. The pm-dependence of the data is reasonably well described by all calculations. However, the most advanced Faddeev calculations, which employ the AV18 nucleon-nucleon interaction and include MEC, overestimate the measured cross sections, especially the longitudinal part, and at the larger values of q. The diagrammatic approach gives a fair description of the cross section, but under(over)estimates the longitudinal (transverse) structure function.

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