Transverse electrodisintegration of the deuteron in the threshold region at high Q 2
1990; American Institute of Physics; Volume: 42; Issue: 1 Linguagem: Inglês
10.1103/physrevc.42.r1
ISSN1538-4497
AutoresR. G. Arnold, D. Benton, P. Bosted, L. Clogher, G. deChambrier, A. T. Katramatou, J.M. Lambert, A. Lung, G. G. Petratos, A. A. Rahbar, S. E. Rock, Z. M. Szalata, B. Debebe, M. Frodyma, R. S. Hicks, A. Hotta, G. A. Peterson, R. Gearhart, J. Alster, J. Lichtenstadt, Franz Dietrich, K. van Bibber,
Tópico(s)High-Energy Particle Collisions Research
ResumoCross sections for 180\ifmmode^\circ\else\textdegree\fi{} deuteron electrodisintegration have been measured near threshold for the ${\mathit{Q}}^{2}$ range 1.21 to 2.77 (GeV/c${)}^{2}$. The data are compared to several nonrelativistic meson-nucleon and hybrid quark-hadron models. The data are in strong disagreement with the impulse approximation, indicating the importance of non-nucleonic degrees of freedom. None of the models are in good agreement with the data at all values of ${\mathit{Q}}^{2}$. The ratio ${\mathit{W}}_{1}$/${\mathit{W}}_{2}$ of inelastic structure functions has been extracted using previous forward angle data and is found to decrease strongly near threshold, also indicating the importance of interaction effects.
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