Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.200-1.250 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.250-1.300 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.300-1.350 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.350-1.400 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.400-1.450 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.450-1.500 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.500-1.550 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.550-1.600 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.600-1.650 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.650-1.700 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.700-1.800 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.800-1.900 GeV.

Differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.900-2.000 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.125-1.150 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.150-1.175 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.175-1.20 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.200-1.250 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.250-1.300 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.300-1.350 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.350-1.400 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.400-1.450 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.450-1.500 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.500-1.550 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.550-1.600 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.600-1.650 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.650-1.700 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.700-1.800 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.800-1.900 GeV.

Inclusive differential cross-sections of $\omega$ mesons produced off the free proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.900-2.000 GeV.

Total cross-section as a function of the incident photon energy for $\omega$ mesons produced off the free proton obtained from exclusive and inclusive analysis$.

Slope parameter and horizontal level from the fits to the differential cross-sections $d\sigma/dt$ for $\omega$ mesons produced off the free proton.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.158-1.208 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.208-1.233 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.233-1.258 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.258-1.308 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.308-1.358 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.358-1.408 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.408-1.508 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.508-1.608 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.608-1.708 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.708-1.808 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.808-1.908 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound proton versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.908-2.008 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.158-1.208 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.208-1.233 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.233-1.258 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.258-1.308 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.308-1.358 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.358-1.408 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.408-1.508 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.508-1.608 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.608-1.708 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.708-1.808 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.808-1.908 GeV.

Differential cross-sections of $\omega$ mesons produced off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.908-2.008 GeV.

Slope parameter and horizontal level from the fits to the differential cross-sections $d\sigma/dt$ for $\omega$ mesons produced off the bound proton.

Slope parameter and horizontal level from the fits to the differential cross-sections $d\sigma/dt$ for $\omega$ mesons produced off the bound neutron.

Inclusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.158-1.208 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.208-1.233 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.233-1.258 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.258-1.308 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.308-1.358 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.358-1.408 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.408-1.508 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.508-1.608 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.608-1.708 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.708-1.808 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.808-1.908 GeV.

Inlusive differential cross-sections of $\omega$ mesons produced off deuterium versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.908-2.008 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.158-1.208 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.208-1.233 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.233-1.258 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.258-1.308 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.308-1.358 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.358-1.408 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.408-1.508 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.508-1.608 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.608-1.708 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.708-1.808 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.808-1.908 GeV.

Sum of the exclusive differential cross-sections of $\omega$ mesons produced off the bound proton and off the bound neutron versus $\cos(\theta^\omega_{\mathrm{c.m.}})$ and versus the momentum transfer to the nucleon, $t$, for incident photon energy $E_\gamma$ = 1.908-2.008 GeV.

Total cross-section as a function of the incident photon energy for $\omega$ mesons produced off the bound proton $\sigma_p^{\mathrm{bound}}$, off the bound neutron $\sigma_n^{\mathrm{bound}}$, the sum of the two exclusive cross-sections $\sigma_p^{\mathrm{bound}}+\sigma_n^{\mathrm{bound}}$, the quasi-free inclusive cross-section $\sigma_{\mathrm{incl}}$ and the cross-section off the neutron calculated by $\sigma_{\mathrm{incl}}-\sigma_p^{\mathrm{bound}}$.

CENTRAL COLLISIONS, PRELIMINARY DATA.