Heavy meson production in (p)over-barXe annihilations

The DIANA collaboration has studied the yields of eta and omega mesons in low-energy (p) over bar Xe annihilations in reactions with and without strange-particle production. The yields of eta and omega mesons in antiproton annihilations at rest and in flight were obtained. From these data, the eta N and omega N cross sections in the meson momentum interval from 200 to 700 MeV/c were determined. The eta N cross section is (17 +/- 10) mb and does not change significantly in this momentum interval, while the cross section of omega N interaction is (60 +/- 30) mb and increases with decreasing omega momentum.