Meson dominance of hadron form factors and large-Nc phenomenology

Understand

We discuss the pion and nucleon form factors and generalized form factors within the large-Nc approach in the space-like region.

• We estimate their theoretical uncertainties through the use of the half-width rule, amounting to taking the half-width of the resonances as the deviation of their mass parameters.
• The approach embodies the meson dominance of form factors and the high-energy constraints from perturbative QCD.
• We compare the results with the available experimental data and lattice simulations.