Axial form-factor and induced pseudoscalar form-factor of the nucleons

In this article, we calculate the axial and the induced pseudoscalar formfactors GA(t = −Q ) and GP (t = −Q ) of the nucleons in the framework of the light-cone QCD sum-rules approach up to twist-6 three valence quark light-cone distribution amplitudes, and observe that the form-factors GA(t = −Q) and GP (t = −Q ) at intermediate and large momentum transfers with Q > 2GeV 2 have significant contributions from the end-point (soft) terms. The numerical values for the axial form-factor GA(t = −Q ) are compatible with the experimental data and theoretical calculations, for example, the chiral quark models and lattice QCD. The numerical values for the induced pseudoscalar form-factor GP (t = −Q ) are compatible with the calculation from the Bethe-Salpeter equation.