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We study relationship between the physical quantities that characterizepion-nucleon and nucleon-nucleon interaction on the basis of the fact thatnuclear forces in the nucleon-nucleon system at low energies are mainlydetermined by the one-pion exchange mechanism. By making use of the recommendedproton-proton low-energy scattering parameters, we obtain the following valuefor the charged pion-nucleon coupling constant g$_{\pi ^{\pm }}^{2}/4\pi=14.55(13)$. Calculated value of this quantity is in excellent agreement withthe experimental result g$_{\pi ^{\pm }}^{2}/4\pi =14.52(26)$ of the UppsalaNeutron Research Group. At the same time, the obtained value of the chargedpion-nucleon coupling constant differs markedly from the value of the neutralpion-nucleon coupling constant g$_{\pi ^{0}}^{2}/4\pi =13.55(13)$. Thus, ourresults show considerable charge splitting of the pion-nucleon couplingconstant.

Study of the Pion-Nucleon Coupling Constant Charge Dependence on the Basis of the Low-Energy Data on Nucleon-Nucleon Interaction