Measurement of Inclusive Spin Structure Functions of the Deuteron

Authors

J. Yun, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
G. E. Dodge, Old Dominion UniversityFollow
T. A. Forest, Old Dominion University
M. Bektasoglu, Old Dominion University
L. Ciciani, Old Dominion University
C. E. Hyde-Wright, Old Dominion UniversityFollow
A. Klein, Old Dominion University
A. V. Klimenko, Old Dominion University
L. M. Qin, Old Dominion University
S. Stepanyan, Old Dominion UniversityFollow
L. B. Weinstein, Old Dominion UniversityFollow
et al.
CLAS Collaboration

Document Type

Article

Publication Date

2003

DOI

10.1103/PhysRevC.67.055204

Publication Title

Physical Review C

Volume

67

Issue

5

Pages

1-13

Abstract

We report the results of a new measurement of spin structure functions of the deuteron in the region of moderate momentum transfer [Q² = 0.27-1.3 (GeV/c)²] and final hadronic state mass in the nucleon resonance region (W=1.08-2.0 GeV). We scattered a 2.5 GeV polarized continuous electron beam at Jefferson Lab off a dynamically polarized cryogenic solid state target (¹⁵ND₃) and detected the scattered electrons with the CEBAF large acceptance spectrometer. From our data, we extract the longitudinal double spin asymmetry A∥ and the spin structure function g₁^d. Our data are generally in reasonable agreement with existing data from SLAC where they overlap, and they represent a substantial improvement in statistical precision. We compare our results with expectations for resonance asymmetries and extrapolated deep inelastic scaling results. Finally, we evaluate the first moment of the structure function g₁^d and study its approach to both the deep inelastic limit at large Q² and to the Gerasimov-Drell-Hearn sum rule at the real photon limit (Q²→ 0). We find that the first moment varies rapidly in the Q² range of our experiment and crosses zero at Q² between 0.5 and 0.8 (GeV/c)², indicating the importance of the Delta resonance at these momentum transfers.

Comments

© 2003 American Physical Society

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Publisher's version available at: https://doi.org/10.1103/PhysRevC.67.055204

Original Publication Citation

Yun J., Kuhn S.E., Dodge, G.E., ...Zhang B., Zhao J., Zhou Z et al., CLAS Collaboration (2003). Measurement of inclusive spin structure functions of the deuteron. Physical Review C, 67(5), 1-13, Article 055204. https://doi.org/10.1103/PhysRevC.67.055204

ORCID

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

Repository Citation

Yun, J.; Kuhn, S. E.; Dodge, G. E.; Forest, T. A.; Bektasoglu, M.; Ciciani, L.; Hyde-Wright, C. E.; Klein, A.; Klimenko, A. V.; Qin, L. M.; Stepanyan, S.; Weinstein, L. B.; et al.; and CLAS Collaboration, "Measurement of Inclusive Spin Structure Functions of the Deuteron" (2003). Physics Faculty Publications. 515.
https://digitalcommons.odu.edu/physics_fac_pubs/515