Quark-parton model with pair correlation

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Abstract
A relativistic quark-parton model is used to study the deep-inelastic lepton-hadron scattering phenomena. It is assumed that there is some correlation among the valence quarks, at least near the threshold of the deep-inelastic region. The assumption has been motivated by the observed threshold behavior of the structure functions of the nucleon. The inclusion of the pair correlation leads to an improved agreement between the quark-parton results and the experimental data. The question of the validity of the model has also been studied.