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An Alternative Method to Obtain the Quark Polarization of the Nucleon

George Igo
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Abstract

An alternate method is described to extract the quark contribution to the spin of the nucleon directly from the first moment of the deuteron structure function, $g^d_1$. It is obtained without recourse to the use of input on the nucleon wave function from hyperon decays involving the flavor symmetry parameters, F and D. The result for the quark polarization of the nucleon, $ΔΣ_ N,$ is in good agreement with the values of the singlet axial current matrix element, $a_0$, obtained from recent next-to-leading order analyses of current proton, neutron and deuteron data.

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George Igo. 2000-12-11. An Alternative Method to Obtain the Quark Polarization of the Nucleon. https://doi.org/10.1103/physrevd.63.057501

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