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arXiv · hep-ph/9510237

Axial Vector Couplings of the Nucleon in Chiral Quark Model Incorporating $ U(1)_A$ Anomaly Effects

Xiaoyuan Li·Yi Liao
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Abstract

Renormalization of the axial vector currents due to Goldstone loops is studied in a simple extension of Manohar - Georgi chiral quark model which incorporates $U(1)_A$ anomaly effects. The polarized strage quark sea in the polarized nucleon results from different renormalization of the flavor singlet and octet currents and is in reasonable agreement with the experiment.

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Xiaoyuan Li, Yi Liao. 1995-10-06. Axial Vector Couplings of the Nucleon in Chiral Quark Model Incorporating $ U(1)_A$ Anomaly Effects. https://doi.org/10.1016/0370-2693(96)00406-6

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