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arXiv · 1206.5594

Origins of parton correlations in nucleon and multi-parton collisions

B. Blok·Yu. Dokshitzer·L. Frankfurt·M. Strikman
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Abstract

We demonstrate that perturbative QCD leads to positive 3D parton--parton correlations inside nucleon explaining a factor two enhancement of the cross section of multi-parton interactions observed at Tevatron at $x_i\ge 0.01$ as compared to the predictions of the independent parton approximation. We also find that though perturbative correlations decrease with $x$ decreasing, the nonperturbative mechanism kicks in and should generate correlation which, at $x$ below $10^{-3}$, is comparable in magnitude with the perturbative one for $x\sim 0.01$.

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B. Blok, Yu. Dokshitzer, L. Frankfurt, M. Strikman. 2012-06-25. Origins of parton correlations in nucleon and multi-parton collisions. https://arxiv.org/abs/1206.5594

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