Deeply Virtual Compton Scattering on the Proton

ORAL

Abstract

DVCS on the proton was measured at Jefferson Lab with CLAS at Hall B with a polarized 5.88 GeV electron beam on an unpolarized hydrogen target. A preliminary measurement of unpolarized and polarized cross sections was made over wide kinematics, from $1\ \textrm{GeV}^{2} < Q^{2} < 5\ \textrm{GeV}^{2}$, $0.1 < x_{B} < 0.6$ and $0.1\ \textrm{GeV}^{2} < -t < 2\ \textrm{GeV}^{2}$. In the handbag model, this reaction is sensitive to the GPD $H$. The Compton form factor $\mathcal{H}_{\textrm{Im}}$, which is proportional to $H$, was extracted. In addition, we have made a comparison of measured cross sections with predictions from several different handbag based models. This measurement allows for further constraints to be placed on the various models, especially on $H$. Preliminary results for the extraction of the GPD $H$ will be presented and discussed.

Authors

  • Nicholas Hirlinger Saylor

    Rensselaer Polytechnic Institute, IPN Orsay