Two measurements of target and beam spin asymmetries for the reaction eprarrepgamma were performed with CLAS at Jefferson Laboratory. Polarized 5.7 GeV electrons were impinging on a longitudinally polarized ammonia and liquid hydrogen target respectively. These measurements are sensitive to generalized parton distributions. Sizable sin phi azimuthal angular dependences were observed in both experiments, indicating the dominance of leading twist terms and the possibility of extracting combinations of generalized parton distributions on the nucleon. [All rights reserved Elsevier].
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