Abstract
Azimuthal asymmetries in exclusive electroproduction of a real photon from an unpolarized deuterium target are measured with respect to beam helicity and charge. They appear in the distribution of these photons in the azimuthal angle φ{symbol} around the virtual-photon direction, relative to the lepton scattering plane. The extracted asymmetries are attributed to either the deeply virtual Compton scattering process or its interference with the Bethe-Heitler process. They are compared with earlier results on the proton target. In the measured kinematic region, the beam-charge asymmetry amplitudes and the leading amplitudes of the beam-helicity asymmetries on an unpolarized deuteron target are compatible with the results from unpolarized protons.
Original language | English (US) |
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Pages (from-to) | 1-27 |
Number of pages | 27 |
Journal | Nuclear Physics B |
Volume | 829 |
Issue number | 1-2 |
DOIs | |
State | Published - Apr 11 2010 |
Externally published | Yes |
Keywords
- DIS
- DVCS
- Deuteron
- GPD
- HERMES experiment
- Unpolarized deuterium target
ASJC Scopus subject areas
- Nuclear and High Energy Physics