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Proton spin dynamics and axial singlet charge
Published in
Volume: 268
Issue: 1
Pages: 112 - 115
We consider the nucleonic matrix element of the divergence of the gauge invariant flavour singlet axial current and show by a careful analysis that isospin-dependent terms persist in it. We also relate the axial singlet charge to the sum of the quark spin contributions and F D ratio and point out that in order to be consistent with the EMC data a small value is not ruled out. © 1991.
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