2-STEP MECHANISM OF MESON PRODUCTION IN PD-]HE-3-X REACTION

It is shown that the two-step model of the reaction pd --> He-3 X (X = eta, eta', omega, phi), involving the subprocesses pp --> d pi(+) and pi(+)n --> Xp allows to explain the form of energy dependence of expe rimental cross sections above the thresholds under assumption that the singlet part of the pp --> d pi(+) amplitude dominates in collinear k inematics. The spin-spin asymmetry for the reaction (d) over right arr ow (p) over right arrow -->(3) HeX has been found to be similar to -1 in the forward-backward approximation.