The generalized parton distributions of the nucleon in the NJL model based on the Faddeev approach ∗
نویسنده
چکیده
We study the generalized parton distributions, including the helicity-flip ones, using Nambu-Jona-Lasinio 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 −ξ < x < ξ are non-vanishing. Our results are qualitatively similar to those calculated with Radyushkin’s double distribution ansatz using forward parton distribution functions calculated in the NJL model as inputs. ∗Correspondence to: H. Mineo, E-mail: [email protected]
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