Spin-Dependent Twist-Four Matrix Elements from g_1 Data in the Resonance Region

Details Spin-Dependent Twist-Four Matrix Elements from g_1 Data in the Resonance Region Spin-Dependent Twist-Four Matrix Elements from g_1 Data in the Resonance Region

1997-03-19

arxiv.org/abs/hep-ph/9703363v1

Phys.Rev.D56:1-5,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages REVTeX, 4 figures

Scientific paper

10.1103/PhysRevD.56.R1

Matrix elements of spin-dependent twist-four operators are extracted from recent data on the spin-dependent g_1 structure function of the proton and deuteron in the resonance region. We emphasize the need to include the elastic contributions to the first moments of the structure functions at Q^2 < 2 GeV^2. The coefficients of the 1/Q^2 corrections to the Ellis-Jaffe sum rules are found to be 0.04 \pm 0.02 and 0.03 \pm 0.04 GeV^2 for the proton and neutron, respectively.

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