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Within spectator model we study the reaction ${\gamma}d \to K^-{\Theta}^+p\to K^-K^+np$ in the threshold energy region. We present the predictions forthe exclusive and inclusive antikaon angular distributions in the laboratorysystem for this reaction calculated for two possible parity states of the${\Theta}^+$ resonance at 1.5 and 1.75 GeV beam energies with and withoutimposing the relevant kinematical cuts on those parts of the sampled phasespace where contribution from the main background sources associated with the${\phi}(1020)$, ${\Lambda}(1520)$ production as well as with the$K^-p$--rescattering in the final state, is expected to be dominant. We showthat under chosen kinematics these distributions are sensitive to the${\Theta}^+$ parity and, therefore, can be used as a filter for thedetermination of its parity.Comment: 18 pages, 8 figures; will be published in Phys.Atom.Nucl_4_200

Antikaon angular distributions in the reaction γd → K −Θ+ p → K − K + np near the threshold and the parity of the Θ+ Pentaquark