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)

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