Origins of parton correlations in nucleon and multi-parton collisions
Autor: | Blok, B., Dokshitzer, Yu., Frankfurt, L., Strikman, M. |
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Rok vydání: | 2012 |
Předmět: | |
Druh dokumentu: | Working Paper |
Popis: | 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 $x\sim 0.01$. Comment: 4 pages, 5 figures |
Databáze: | arXiv |
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