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hep-ph2026
The axial-vector nucleon form factor in the meson dominance picture: the role triangle singularities from a dispersive view
Enrique Ruiz Arriola, Pablo Sanchez-Puertas
The nucleon axial form factor is analyzed in terms of a dispersion relation comprising chiral perturbation theory (ChPT) and perturbative QCD (pQCD) in the low- and high-momentum r…
hep-ph2026
Hadronic form factors in QCD and the incompleteness problem in the time-like region
Enrique Ruiz Arriola, Pablo Sanchez-Puertas, Wojciech Broniowski
Hadronic form factors fulfill dispersion relations and superconvergence sum rules for their spectral density as genuine imprints of QCD. We show several instances where these condi…