Quark-Hadron Duality in Spin Structure Functions g(1)(p) and g(1)(d)

Authors

P. E. Bosted
K. V. Dharmawardane, Old Dominion University
G. E. Dodge, Old Dominion UniversityFollow
T. A. Forest, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
Y. Prok
G. Adams
M. Amarian, Old Dominion University
P. Ambrozewicz
M. Anghinolfi
H. Bagdasaryan, Old Dominion University
M. Bektasoglu, Old Dominion University
S. Bültmann, Old Dominion UniversityFollow
S. L. Careccia, 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
A. Klein, Old Dominion University
J. Lachniet, Old Dominion University
R. A. Niyazov, Old Dominion University
L. M. Qin, Old Dominion University
F. Sabatié, Old Dominion University
S. Tkachenko, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow
J. Yun, Old Dominion University
J. Zhang, Old Dominion University

Document Type

Article

Publication Date

2007

DOI

10.1103/PhysRevC.75.035203

Publication Title

Physical Review C

Volume

75

Issue

3

Pages

35203 (7pg.)

Abstract

New measurements of the spin structure functions of the proton and deuteron g(1)(p)(x,Q²) and g(1)(d)(x,Q²) in the nucleon resonance region are compared with extrapolations of target-mass-corrected next-to-leading-order (NLO) QCD fits to higher energy data. Averaged over the entire resonance region (W <2 >GeV), the data and QCD fits are in good agreement in both magnitude and Q² dependence for Q² >1.7 GeV²/c². This "global" duality appears to result from cancellations among the prominent "local" resonance regions: in particular strong ^σ3/2 contributions in the Δ (1232) region appear to be compensated by strong ^σ1/2 contributions in the resonance region centered on 1.5 GeV. These results are encouraging for the extension of NLO QCD fits to lower W and Q² than have been used previously.

Original Publication Citation

Bosted, P. E., Dharmawardane, K. V., Dodge, G. E., Forest, T. A., Kuhn, S. E., Prok, Y., . . . Zhao, Z. (2007). Quark-hadron duality in spin structure functions g1p and g1d. Physical Review C, 75(3), 35203. doi:10.1103/PhysRevC.75.035203

ORCID

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

Repository Citation

Bosted, P. E.; Dharmawardane, K. V.; Dodge, G. E.; Forest, T. A.; Kuhn, S. E.; Prok, Y.; Adams, G.; Amarian, M.; Ambrozewicz, P.; Anghinolfi, M.; Bagdasaryan, H.; Bektasoglu, M.; Bültmann, S.; Careccia, S. L.; Gavalian, G.; Guler, N.; Hyde-Wright, C. E.; Juengst, H. G.; Klein, A.; Lachniet, J.; Niyazov, R. A.; Qin, L. M.; Sabatié, F.; Tkachenko, S.; Weinstein, L. B.; Yun, J.; and Zhang, J., "Quark-Hadron Duality in Spin Structure Functions g(1)(p) and g(1)(d)" (2007). Physics Faculty Publications. 92.
https://digitalcommons.odu.edu/physics_fac_pubs/92