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

2021/05/31 by Ulrich Sauerwein, Matthias F. M. Lutz, R. G. E. Timmermans +1
Physics and Astronomy · #Baryon #Chiral perturbation theory #High-Energy Particle Collisions Research #Lattice QCD #Meson #Octet #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Pseudoscalar meson #Pseudovector #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Vector meson #hep-lat #hep-ph

paper · pdf · doi:10.1103/physrevd.105.054005

57 pages, 4 figures, in the revised manuscript we extended the presentation considering now all relevant counterterms

arxiv created 2022/01/07 · openalex publication_date 2022/03/07 · arxiv updated 2022/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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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