Abstract
Incoherent pi(+)-photoproduction on the deuteron is investigated for photon energies near threshold with particular focus on beam-target double spin asymmetries. The analysis is based on a gamma d -> pi(+)nn reaction model in which realistic elementary amplitudes for gamma N -> pi N, NN -> NN and pi N -> pi N are incorporated. Numerical results on all possible beam-target double spin asymmetries of the differential and total cross-sections in the photon energy region near threshold are presented. Effects of NN and pi N final state interactions are investigated and their roles are found to be important.