Nucleon quark distributions in a covariant quark-diquark model

Details Nucleon quark distributions in a covariant quark-diquark model Nucleon quark distributions in a covariant quark-diquark model

2005-04-26

arxiv.org/abs/hep-ph/0504229v1

Phys.Lett.B621:246-252,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 7 figures

Scientific paper

10.1016/j.physletb.2005.06.065

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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