Session D7 - Hadron Physics.
ORAL session, Saturday afternoon, May 01
Governor's Square 16, Adam's Mark Hotel
Preliminary results will be presented for the target spin asymmetry in exclusive Deeply Virtual Compton Scattering (DVCS). The asymmetry is the results of interference between the DVCS and the Bethe-Heitler amplitudes. The data were taken with the CLAS detector in Jefferson Lab's Hall B.A 5.7 GeV electron beam was directed onto an NH3 target, which was dynamically polarized parallel to the beam direction. The target polarization was on average 70%, and was frequently reversed for control of systematics. Data were also taken with C-12 targets. These data were used to subtract the unpolarized nitrogen background in the NH3 target sample. After background subtraction, the total event sample contained approximately 3000 single photon events in the hadronic mass range W = 1.8 - 3.0 GeV, and for photon virtualities from Q^2 = 1.5 to 4.5 GeV^2.