Some aspects of a0-f0 mixing effects in the reaction pn→da00
with perpendicular polarized proton beam are discussed. An angular--asymmetry
parameter A is defined to study those effects. It is shown that, for energies
close to the production threshold, the angular--asymmetry parameter A(θ,ϕ) is proportional to the a0-f0 mixing amplitude for arbitrary polar and
azimuthal angles θ and ϕ of the outgoing a0 meson. This
statement is also valid for arbitrary energies, but then only at polar angles
θ=00 and θ=900. The mass dependence of the differential cross
section dσ/dmπ0η in the reaction pn→dπ0η in the
presence of \mix mixing is also discussed.Comment: 17 pages, 3 Figure