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arXiv · hep-ph/9510332

Axial Anomaly and the Nucleon Spin

C. S. Kim·J. H. Lin
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Abstract

In this letter, we have taken a particular Lagrangian, which was introduced to resolve U(1) problem, as an effective QCD Lagrangian, and have derived a formula of the quark content of the nucleon spin. The difference between quark content of the proton (ΔΣ_p) and that of the neutron (ΔΣ_n) is evaluated by this formula. Neglecting the higher-order isospin corrections, this formula can reduce to Efremov's results in the large N_c limit.

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C. S. Kim, J. H. Lin. 1996-07-20. Axial Anomaly and the Nucleon Spin. https://doi.org/10.1142/s0217732396000941

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