Two-loop evolution kernels for colour dependent double parton distributions
High Energy Physics - Phenomenology
2023-05-24 v3
Abstract
A key ingredient in the description of double parton distributions is their scale dependence. If the colour of each individual parton is summed over, the distributions evolve with the same DGLAP kernels as ordinary parton distributions. This is no longer true if the two partons are colour correlated. We compute the relevant kernels for this case at next-to-leading order in the strong coupling, for unpolarised or longitudinally polarised partons and for transversely polarised quarks.
Cite
@article{arxiv.2212.11843,
title = {Two-loop evolution kernels for colour dependent double parton distributions},
author = {Markus Diehl and Florian Fabry and Alexey Vladimirov},
journal= {arXiv preprint arXiv:2212.11843},
year = {2023}
}
Comments
41 pages, 2 figures. v2: corrections (highest order of poles, polarised valence kernels), added discussion of kinematic limits. v3: added clarifications, fixed typos