Evidence for mass dependent effects in the spin structure of baryons
نویسنده
چکیده
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 [1,2] 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. PACS numbers: 12.39.Jh, 13.88+e, 14.20.Jn Typeset using REVTEX E-mail: [email protected] E-mail: [email protected]
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