High-energy photoproduction of ${\pi }^{+}{\pi }^{-}{\pi }^0$, $K^{+}{K}^{-}$, and $p\overline{p}$ states

We report measurements from elastic photoproduction of $\omega \text{'}\mathrm{s}$ on hydrogen for photon energies between 60 and 225 GeV, elastic $\phi$ photoproduction on hydrogen between 35 and 165 GeV and on deuterium between 45 and 85 GeV, elastic photoproduction on deuterium of an enhancement at 1.72 GeV/${\mathit{c}}^2$ decaying into $K^{+}{K}^{-}$, and elastic and inelastic photoproduction on deuterium of $p\overline{p}$ pairs.