CNF Seminar: M. Gabriel Santiago

Speaker: M. Gabriel Santiago (CNF)

Title: Generalized Parton Distributions Through Universal Moment Parameterization: The Gluonic Sector with Deeply Virtual J/ψ Production

Abstract: 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. In this talk we discuss the inclusion of HERA measurements of Deeply Virtual Meson Production (DVMP) in order to study gluon GPDs at non-zero skewness using the same conformal moment parameterization ansatz. 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.

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