Deconvolution problem of deeply virtual Compton scattering

Generalized parton distributions are instrumental to study both the three-dimensional structure and energy-momentum tensor of nucleon, motivate numerous experimental programs involving hard exclusive measurements. Based on a next-to-leading order analysis careful evolution effects, we exhibit nontrivial generalized with arbitrarily small imprints deeply virtual Compton scattering observables. This means that in practice reconstruction from measurements, known as deconvolution problem, does not possess unique solution for this channel. In paper discuss consequences extraction data advocate multichannel analysis.