Quark and Gluon Correlations from Generalized Parton Distributions

Generalized Parton Distributions (GPDs) provide clear insights into the various static averaged density distributions of quarks and gluons inside a nucleon. On the other hand, obtaining information about the fluctuations of these density distributions from GPDs is not as straightforward. But these fluctuations are closely related to correlations among the constituent quarks and gluons. As a measure of these correlations, we calculated overlap integrals of Fourier transformed quark and gluon GPDs at various momentum fraction x. We used parametric analytic forms of GPDs within a spectator model framework, constrained using deeply virtual Compton scattering and lattice QCD data.