DETERMINATION OF THE COUPLING CONSTANT OF PION-NUCLEON INTERACTION BY DIFFERENTIAL CROSS SECTION FOR ELASTIC (np)-SCATTERING AT 90, 380-400, 630 MEV

The determination of experimental data on (np) scattering at 90, 380 to 400, and 630 Mev was carried out in order to determine the coupling constant of pionnucleon interaction, the existence of two poles in the real part of the (np)- scattering amplitude being taken into account. It is shown that within experimental errors the employed data do not contradict the value f/sup 2/= 0.08. (auth)