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Axial-vector form factors of the baryon octet and chiral symmetry

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arxiv 2105.06755 v2 pith:2V2XAMDK submitted 2021-05-14 hep-ph hep-lat

Ulrich Sauerwein , Matthias F.M. Lutz , Rob G.E. Timmermans This is my paper · ORCID
classification hep-phhep-lat
keywords baryonoctetaxial-vectorchiralfactorsformapproachcomparison
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We consider the axial-vector form factors of the baryon octet in flavor-SU(3) chiral perturbation theory. The baryon octet and decuplet and the pseudoscalar-meson octet are included as explicit degrees of freedom. We explore the use of on-shell meson and baryon masses in the one-loop contributions to the axial-vector form factors and focus on a consistent treatment in terms of chiral power counting. The convergence properties of such an approach are scrutinized. We discuss the potential for comparison to upcoming QCD lattice data.

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  1. Nucleon relativistic weak-neutral axial-vector four-current distributions

    hep-ph 2024-11 conditional novelty 5.0 of 10

    The 3D axial charge density of a spin-1/2 hadron is parity-odd and controlled by the induced pseudotensor form factor G_T^Z, while the second-class current drops out of the mean-square axial and spin radii.

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