Measurement of the Deuteron Structure Function F₂ in the Resonance Region and Evaluation of its Moments

Authors

H. Bagdasaryan, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
K. V. Dharmawardane, Old Dominion University
G. E. Dodge, Old Dominion UniversityFollow
T. A. Forest, Old Dominion University
G. Gavalian, Old Dominion University
N. Guler, Old Dominion University
C. E. Hyde-Wright, Old Dominion UniversityFollow
H. G. Juengst, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
L. B. Weinstein, Old Dominion UniversityFollow
J. Yun, Old Dominion University
et al.
CLAS Collaboration

Document Type

Article

Publication Date

2006

DOI

10.1103/PhysRevC.73.045205

Publication Title

Physical Review C

Volume

73

Issue

4

Pages

045205 (1-22)

Abstract

Inclusive electron scattering off the deuteron has been measured to extract the deuteron structure function F₂ with the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. The measurement covers the entire resonance region from the quasielastic peak up to the invariant mass of the final-state hadronic system W similar or equal to 2.7 GeV with four-momentum transfers Q² from 0.4 to 6 (GeV/c)². These data are complementary to previous measurements of the proton structure function F₂ and cover a similar two-dimensional region of Q² and Bjorken variable x. Determination of the deuteron F₂ over a large x interval including the quasielastic peak as a function of Q², together with the other world data, permit a direct evaluation of the structure function moments for the first time. By fitting the Q² evolution of these moments with an OPE-based twist expansion we have obtained a separation of the leading twist and higher twist terms. The observed Q² behavior of the higher twist contribution suggests a partial cancelation of different higher twists entering into the expansion with opposite signs. This cancelation, found also in the proton moments, is a manifestation of the "duality" phenomenon in the F₂ structure function.

Comments

© 2006 American Physical Society

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Publisher's version available at: https://doi.org/10.1103/PhysRevC.73.045205

Original Publication Citation

Osipenko, M., Ricco, G., Simula, S. ... Yun, J., Zana, L., Zhang, J. (CLAS Collaboration) (2006). Measurement of the deuteron structure function F₂ in the resonance region and evaluation of its moments. Physical Review C, 73(4), 1-22, Article 045205. https://doi.org/10.1103/PhysRevC.73.045205

ORCID

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

Repository Citation

Bagdasaryan, H.; Bültmann, S.; Dharmawardane, K. V.; Dodge, G. E.; Forest, T. A.; Gavalian, G.; Guler, N.; Hyde-Wright, C. E.; Juengst, H. G.; Kuhn, S. E.; Weinstein, L. B.; Yun, J.; et al.; and CLAS Collaboration, "Measurement of the Deuteron Structure Function F₂ in the Resonance Region and Evaluation of its Moments" (2006). Physics Faculty Publications. 516.
https://digitalcommons.odu.edu/physics_fac_pubs/516