A model for the nucleon-antinucleon interaction is presented which is based
on meson-baryon dynamics. The elastic part is the G-parity transform of the
Bonn NN potential. Annihilation into two mesons is described in terms of
microscopic baryon-exchange processes including all possible combinations of
π,η,ρ,ω,a0,f0,a1,f1,a2,f2,K,K∗. The remaining
annihilation part is taken into account by a phenomenological energy- and state
independent optical potential of Gaussian form. The model enables a
simultaneous description of nucleon-antinucleon scattering and annihilation
phenomena with fair quality.Comment: revised version, REVTEX, 9 pages, 10 figures available from this URL
ftp://ikp113.ikp.kfa-juelich.de/pub/kph140/nucl-th.9411014.u