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arXiv · 2310.16432

Evolution of colour correlated double parton distributions: a quantitative study

Markus Diehl·Florian Fabry·Peter Ploessl
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Abstract

Double parton distributions satisfy the same evolution equations as ordinary single-parton densities, provided that the colours of the two partons are uncorrelated. The situation is different for colour correlated parton pairs, where evolution to higher scales results in a suppression by Sudakov double logarithms. We perform a detailed study of evolution for colour correlated double parton distributions, both analytically and numerically, at lowest order and beyond. When the two observed partons originate from the perturbative splitting of a single one, the Sudakov suppression of colour correlations at the cross section level is not as strong as one might expect.

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Markus Diehl, Florian Fabry, Peter Ploessl. 2023-10-25. Evolution of colour correlated double parton distributions: a quantitative study. https://arxiv.org/abs/2310.16432

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