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The generalized parton distributions of the nucleon in the NJL model based on the Faddeev approach

H. Mineo·Shin Nan Yang·Chi-Yee Cheung·W. Bentz
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Abstract

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.

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H. Mineo, Shin Nan Yang, Chi-Yee Cheung, W. Bentz. 2005-02-02. The generalized parton distributions of the nucleon in the NJL model based on the Faddeev approach. https://doi.org/10.1016/j.nuclphysbps.2004.12.042

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