Abstract
The nuclear-mass dependence of azimuthal cross-section asymmetries with respect to charge and longitudinal polarization of the lepton beam is studied for hard exclusive electroproduction of real photons. The observed beam-charge and beam-helicity asymmetries are attributed to the interference between the Bethe-Heitler and the deeply virtual Compton scattering processes. For various nuclei, the asymmetries are extracted for both coherent and incoherent-enriched regions, which involve different (combinations of) generalized parton distributions. For both regions, the asymmetries are compared to those for a free proton, and no nuclear-mass dependence is found.
| Original language | English |
|---|---|
| Article number | 035202 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 81 |
| Issue number | 3 |
| DOIs | |
| State | Published - 5 Mar 2010 |
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