Accessing Generalized Parton Distributions in Exclusive Photoproduction   of a $\gamma \rho$ Pair with a Large Invariant Mass
  We propose and study the photoproduction of a $\gamma\,\rho$ pair with a large invariant mass and a small transverse momentum of the final nucleon, as a way to access generalized parton distributions. In the kinematics of JLab 12-GeV, we demonstrate the feasibility of this measurement. 
R. Boussarie, B. Pire, L.Szymanowski, S. Wallon
hep-ph hep-ex nucl-ex nucl-th