Beam-charge azimuthal asymmetry and deeply virtual Compton scattering
Beam-charge azimuthal asymmetry and deeply virtual Compton scattering
The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or …