Transverse Electrodisintegration of the Deuteron in the Threshold Region at High Q2,"

R G. Arnold, American University Washington DC
D Benton, American University Washington DC
P E. Bosted, American University Washington DC
L Clogher, American University Washington DC
B Debebe, University of Massachusetts - Amherst
M B. Frodyma, University of Massachusetts - Amherst
R S. Hicks, University of Massachusetts - Amherst
A Hotta, University of Massachusetts - Amherst
Gerald Alvin Peterson, University of Massachusetts - Amherst

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DOI:10.1103/PhysRevC.42.R1 Creative Commons Attribution License 3.0 (cc-BY)

Abstract

Cross sections for 180° deuteron electrodisintegration have been measured near threshold for the Q2 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 Q2. The ratio W1/W2 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.