Bonn nucleon-nucleon meson exchange model with a relativistic quark-gluon annihilation potential

The full Bonn potential, combined with a relativistic quark-gluon annihilation potential, is compared with recent N bar N polarization data from LEAR and with measured differential cross sections (elastic and charge exchange) below plab=800 MeV/c. It is demonstrated within this approach that a careful analysis of p bar p→p bar p(EL) and p bar p→n bar n(CEX), at the same energy, in terms of the five independent helicity amplitudes can be used to selectively test specific boson exchange contributions to N bar N scattering. The charge-exchange differential cross section in forward direction is particularly sensitive to the one-pion-exchange potential in this model. This feature could be used to see if recent attempts to fit NN data with a much softer πNN form factor can be made compatible with N bar N data