Single-spin asymmetries of d(γ,π)NN in the first resonance region Original Research Article

Incoherent photoproduction of pions on the deuteron in the first resonance region is investigated with special emphasis on single-spin asymmetries. For the elementary pion production operator an effective Lagrangian model which includes the standard pseudovector Born terms and a resonance contribution from the Δ(1232)-excitation is used. Single-spin asymmetries, both for charged and neutral pion photoproduction on the deuteron, are analyzed and calculated in the first resonance region. The linear photon asymmetry Σ, vector target asymmetry T11 and tensor target asymmetries T20, T21, and T22 for the reaction d(γ,π)NN with polarized photon beam and/or oriented deuteron target are predicted for forthcoming experiments.