Measurement of Deeply Virtual Compton Scattering at HERMES

The measurement of azimuthal cross section asymmetries from deeply virtual Compton scattering on the proton and deuteron at HERMES is discussed. In particular results on the longitudinal target spin asymmetry as a function of the azimuthal angle and the Mandelstam t are given. The t‐dependence of the asymmetry is compared with calculations based on generalized parton distribution models.