2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/47215The neutral pion electroproduction on the proton is considered in the framework phenomenological model based on the PCAC, current algebra with hard pions and chiral symmetry breaking interaction. The s- wave differential cross-section of the electroproduction of neutral pions off protons near the threshold is predicted as function photon momentum transfer squared $k^2$ . The s- wave multipoles $ReE_{0+}$ and $ReL_{0+}$ as function of the energy of the $π^0p$- system are given for the small $k^2$ and $% k^2=0.1(GeV/c)^2$. The results are compered with the experiment. It is shown the significant role of the explicit chiral symmetry breaking.28 pages, 5 Postscript figures, LatexHigh Energy Physics - Phenomenologytext