Phys. Rev. D 59, 094021 (1999) [7 pages]Generalized Gerasimov-Drell-Hearn integral and the spin structure of the nucleonReceived 27 October 1998; published 7 April 1999 The spin structure functions g1 and g2 are calculated in the resonance region and for small and intermediate momentum transfer. The calculation is based on a gauge-invariant and unitary model for one-pion photo- and electroproduction. The predictions of the model agree with the asymmetries and the spin structure functions recently measured at SLAC, and the first moments of the calculated spin structure functions satisfy the Gerasimov-Drell-Hearn and Burkhardt-Cottingham sum rules within an error of typically 5–10 %. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.59.094021
DOI:
10.1103/PhysRevD.59.094021
PACS:
13.60.Le, 13.60.Hb, 14.20.Gk
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