Abstract
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 is accounted for by microscopic baryon-exchange processes with two-meson intermediate states involving \ensuremath{\pi}, \ensuremath{\rho}, \ensuremath{\sigma}, \ensuremath{\omega}, \ensuremath{\delta}, K, and ${\mathit{K}}^{\mathrm{*}}$. Results for cross sections and polarization data are compared with a phenomenological treatment of annihilation based on a simple, state- and energy-independent optical potential.
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