ATTENTION: JOUR INHABITUEL
A rich set of azimuthal asymmetries related to beam charge, beam helicity and target
spin have been extracted at HERMES in DVCS off unpolarized, longitudinally or transversely
polarized proton, unpolarized or longitudinally polarized deuteron, and nuclear targets.
For the last two years of data taking in 2006 and 2007, a recoil detector was integrated
into HERMES, which allowed for the detection of the recoiling proton and consequently for
the separation of “pure” DVCS events from those with resonant production. The latter
events remained part of the signal in earlier data sets.
University of Illinois at Urbana-Champaign