Electron Scattering from High-Momentum Neutrons in Deuterium

Authors

A.V. Klimenko, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
H. Bagdasaryan, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
S. L. Careccia, Old Dominion University
K. V. Dharmawardane, Old Dominion University
Gail Dodge, Old Dominion UniversityFollow
G. Gavalian, Old Dominion University
N. Guler, Old Dominion University
C.E. Hyde-Wright, Old Dominion UniversityFollow
A. Klein, Old Dominion University
R. A. Niyazov, Old Dominion University
S. Tkachenko, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow
et al.
CLAS Collaboration

Document Type

Article

Publication Date

2006

DOI

10.1103/PhysRevC.73.035212

Publication Title

Physical Review C

Volume

73

Issue

3

Pages

1-14

Abstract

We report results from an experiment measuring the semiinclusive reaction ²H(e,e′p_s) in which the proton p_s is moving at a large angle relative to the momentum transfer. If we assume that the proton was a spectator to the reaction taking place on the neutron in deuterium, the initial state of that neutron can be inferred. This method, known as spectator tagging, can be used to study electron scattering from high-momentum (off-shell) neutrons in deuterium. The data were taken with a 5.765 GeV electron beam on a deuterium target in Jefferson Laboratory's Hall B, using the CEBAF large acceptance spectrometer. A reduced cross section was extracted for different values of final state missing mass W^∗, backward proton momentum ^→p_s, and momentum transfer Q². The data are compared to a simple plane wave impulse approximation (PWIA) spectator model. A strong enhancement in the data observed at transverse kinematics is not reproduced by the PWIA model. This enhancement can likely be associated with the contribution of final state interactions (FSI) that were not incorporated into the model. Within the framework of the simple spectator model, a “bound neutron structure function” F^eff_2n was extracted as a function of W^∗ and the scaling variable x^∗ at extreme backward kinematics, where the effects of FSI appear to be smaller. For p_s > 0.4 GeV/c, where the neutron is far off-shell, the model overestimates the value of F^eff_2n in the region of x^∗ between 0.25 and 0.6. A dependence of the bound neutron structure function on the neutron's “off-shell-ness” is one possible effect that can cause the observed deviation.

Comments

© 2006 The American Physical Society.

"Yes, the author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."

Publisher's version available at: https://doi.org/10.1103/PhysRevC.73.035212

Original Publication Citation

Klimenko, A.V., Kuhn, S.E., Bültmann, S., Dodge, G., Hyde-Wright, C.E., Weinstein, L.B., et al., CLAS Collaboration (2006). Electron scattering from high-momentum neutrons in deuterium. Physical Review C, 73(3), 1-14, Article 035212. https://doi.org/10.1103/PhysRevC.73.035212

ORCID

0000-0003-2243-6836 (Kuhn), 0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde), 0000-0001-5416-2900 (Weinstein)

Repository Citation

Klimenko, A.V.; Kuhn, S. E.; Bagdasaryan, H.; Bültmann, S.; Careccia, S. L.; Dharmawardane, K. V.; Dodge, Gail; Gavalian, G.; Guler, N.; Hyde-Wright, C.E.; Klein, A.; Niyazov, R. A.; Tkachenko, S.; Weinstein, L. B.; et al.; and CLAS Collaboration, "Electron Scattering from High-Momentum Neutrons in Deuterium" (2006). Physics Faculty Publications. 481.
https://digitalcommons.odu.edu/physics_fac_pubs/481