Evidence for mass dependent effects in the spin structure of baryons

Details Evidence for mass dependent effects in the spin structure of baryons Evidence for mass dependent effects in the spin structure of baryons

1995-12-21

arxiv.org/abs/hep-ph/9512394v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, REVTeX, 1 figure

Scientific paper

We analyze the axial-vector form factors of the nucleon hyperon system in a model with mass dependent quark spin polarizations. This mass dependence is deduced from an earlier analysis\cite{jlhs,jlhs2} of magnetic moment data, and implies that the spin contributions from the quarks to a baryon decrease with the mass of the baryon. When applied to the axial-vector form factors, these mass dependent spin polarizations bring the various sum-rules from the model in better agreement with experimental data. Our analysis leads to a reduced value for the total spin polarization of the proton.

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