Figure 1

Axial form factor of the nucleon from LCSRs compared to the experimental data. Parameters of the nucleon DAs correspond to the sets ABO1 and ABO2 in Table I of Ref. [12] for the solid and dashed curves, respectively. Borel parameter $M^2=1.5{\mathrm{GeV}}^2$ for ABO1 and $M^2=2{\mathrm{GeV}}^2$ for ABO2. The dipole and $z$ parametrizations of the neutrino scattering data are shown by the narrow (green) and broad (orange) shaded regions, respectively. The data points are from the pion electroproduction experiments in Refs. [4, 17]. For more details, see text.