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Nucleon quark distributions in a covariant quark-diquark model

I. C. Cloet·W. Bentz·A. W. Thomas
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Abstract

Spin-dependent and spin-independent quark light-cone momentum distributions and structure functions are calculated for the nucleon. We utilize a modified Nambu-Jona-Lasinio model in which confinement is simulated by eliminating unphysical thresholds for nucleon decay into quarks. The nucleon bound state is obtained by solving the Faddeev equation in the quark-diquark approximation, where both scalar and axial-vector diquark channels are included. We find excellent agreement between our model results and empirical data.

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I. C. Cloet, W. Bentz, A. W. Thomas. 2005-04-26. Nucleon quark distributions in a covariant quark-diquark model. https://doi.org/10.1016/j.physletb.2005.06.065

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