The production of the ω0 meson in the reaction π+d → psub(s)pω0 at 4GeV/c

The reaction π+n→ω0p has been studied at 4 GeV/c giving a total cross section of 313 +- 26 μb. The sample of about 3500 ω0 events produced in the forward direction has been used to determine the differential cross section and the spin density matrix elements. The effective trajectory for unnatural parity exchange has been determined by a comparison of rho00dsigma/dt at different energies. A comparison of rho00dsigma/dt has been made with the similar data for rho0 production in this experiment allowing π-B exchange degeneracy and rho-ω interference to be investigated. These methods result in an unnatural trajectory consistent with that expected for the B-meson. A further study of rho-ω interference has been made by comparing the reactions π+n→ω0p and π-p→ω0n at similar energies. The results on ω and rho production are combined with data on K*0 and antiK*0 production at 4 GeV/c and an SU(3) sum rule relating the production of these four mesons is shown to be satisfied. (Auth.)