A quantitative study of two-loop splitting in double parton distributions
High Energy Physics - Phenomenology
2026-02-23 v1
Abstract
Double parton distributions at small distances between the two partons are dominated by a mechanism in which the two observed partons originate from the splitting of a single parton. This contribution can be computed in terms of single-parton distributions and perturbative splitting kernels. We demonstrate that two-loop corrections to these kernels can have a substantial quantitative impact and considerably improve the stability of predictions for double parton scattering. We also consider the impact of heavy quark masses in the two-loop splitting kernels in an approximate manner.
Cite
@article{arxiv.2602.18233,
title = {A quantitative study of two-loop splitting in double parton distributions},
author = {Markus Diehl and Peter Ploessl},
journal= {arXiv preprint arXiv:2602.18233},
year = {2026}
}
Comments
54 pages, 28 figures