# TOPOLOGICAL CHARGE SCREENING AND THE 'PROTON SPIN' BEYOND THE CHIRAL LIMIT

@article{Narison1999TOPOLOGICALCS, title={TOPOLOGICAL CHARGE SCREENING AND THE 'PROTON SPIN' BEYOND THE CHIRAL LIMIT}, author={S. Narison and G. Shore and G. Veneziano}, journal={Nuclear Physics}, year={1999}, volume={546}, pages={235-278} }

Abstract The theory of the ‘proton spin’ effect proposed in our earlier papers is extended to include the chiral SU (3) symmetry breaking and flavour mixing induced by non-vanishing quark masses in QCD. The theoretical basis is the derivation of exact, unified Goldberger-Treiman (GT) relations valid beyond the chiral limit. The observed suppression in the flavour singlet axial charge a 0 ( Q 2 ) is explained by an anomalously small value for the slope of the singlet current correlation function… Expand

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