Generalized parton distributions of the nucleon in the Nambu-Jona-Lasinio model based on the Faddeev approach

We study the generalized parton distributions, including the helicity-fiip ones, using the Nambu-Jona-Lasinio (NJL) model based on a relativistic Faddeev approach with static approximation. Sum rules relating the generalized parton distributions to nucleon electromagnetic form factors are satisfied. Moreover, quark-antiquark contributions in the region -xi < x