Test of the Bonn nucleon-nucleon potential in nucleon-antinucleon scattering

Results obtained in an investigation of the G-parity transformed Bonn NN-potential which is merged with a previously developed quark-gluon annihilation potential are discussed. Comparison with data for elastic and charge exchange reactions at the same energy allows for studying complementary sets of helicity amplitudes which are dominated by specific meson exchanges. Assumptions about meson-nucleon form factors can now be tested that way. On the other hand forward structures in differential cross sections are sensitive to both the annihilation strength and range. The analysis of precise proton-antiproton → proton-antiproton and nucleon-antinucleon data from K.E.K. and L.E.A.R. allows for constraints on the quark core rise of the nucleon; the Bonn potential (which is given in momentum space) when combined with the quark-gluon annihilation potential seems to be much less sensitive to variations of the quark core radius than other models (which are given in r-space). (author). 14 figs., 26 refs