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Spin-dependent twist-four matrix elements from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>g</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>data in the resonance region
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 ${Q}^{2}<2$ ${\mathrm{GeV}}^{2}.$ The coefficients of the …