Generalized Parton Distributions through universal moment parameterization: gluons at non-zero skewness

We present a further step toward a global extraction of gluon generalized parton distributions (GPDs). In our previous work we performed the first global analysis of quark GPDs by including lattice quantum chromodynamics (QCD) calculations, global fitted forward parton distribution functions (PDFs), form factors (FFs), and Deeply Virtual Compton Scattering (DVCS) measurements from JLab and Hadron-Electron Ring Accelerator (HERA) to constrain two quark flavors with leading order QCD evolution. There, the inclusion of DVCS did not probe gluon structure at leading order, as the gluon GPDs only enter through evolution. Here, we include HERA measurements of Deeply Virtual Meson Production (DVMP) in order to study gluon GPDs at non-zero skewness using the same moment parameterization ansatz and obtaining results consistent with the previous global fit including lattice QCD calculations and experimental measurements. We concentrate our study on the production of J/Ψ mesons in order to limit quark contributions and thus allow for greater constraints on the gluon GPDs at non-zero skewness.