Proton Spin Based On Chiral Dynamics
H. J. Weber
Abstract
Chiral spin fraction models agree with the proton spin data only when the chiral quark-Goldstone boson couplings are pure spinflip. For axial-vector coupling from soft-pion physics this is true for massless quarks but not for constituent quarks. Axial-vector quark-Goldstone boson couplings with constituent quarks are found to be inconsistent with the proton spin data.
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