Measurement ofω-Meson Photoproduction on Protons from 46 to 180 GeV

Elastic $\omega$-meson photoproduction on protons has been measured from 46 to 180 GeV. The cross section is approximately constant with photon energy and averages 1.10 ± 0.08 μb. The $t$ dependence of the differential cross section is consistent with $A$ $\exp \mathrm{}\left(\mathrm{bt}\right)\mathrm{}$, where $b=8.4\mathrm{}\pm 0.7$ Ge${\mathrm{V}}^{-2\mathrm{}}$. The photon-omega coupling constant, obtained from a normalization of hadron elastic-scattering cross sections to the photoproduction data of this experiment (with use of vector-meson dominance and an additive quark model), is $\frac{{{\gamma }_{\omega }}^2}{4\pi }=5.4\mathrm{}\pm 0.4$.