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arXiv · hep-ph/0007239

The Angular Momentum and g_1^p Sum Rules for the Proton

G. M. Shore
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Abstract

The gauge invariant operator formulation of the angular momentum sum rule ${1\over2} = J_q + J_g$ for the proton is presented and contrasted with the sum rule for the first moment of the polarised structure function $g_1^p$. The decoupling of the axial charge $a^0$ from the angular momentum sum rule is highlighted and the possible QCD field-theoretic basis for an angular momentum sum rule of the form ${1\over2} = {1\over2}\D q + \D g + L_q + L_g$ is critically discussed.

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G. M. Shore. 2000-07-21. The Angular Momentum and g_1^p Sum Rules for the Proton. https://doi.org/10.1016/s0920-5632(01)01127-6

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