Tree-level soft emission for two pairs of quarks
High Energy Physics - Phenomenology
2024-11-26 v2 High Energy Physics - Theory
Abstract
We compute the tree-level current for the emission of two soft quark-antiquark pairs in a hard scattering. We also compute the square of this current and discuss the resulting color correlations, featuring dipole correlations and three-parton correlations. This object is essential for analyzing the infrared singularities at next-to-next-to-next-to-next-to-leading-order (N4LO) predictions in perturbative QCD.
Keywords
Cite
@article{arxiv.2411.08795,
title = {Tree-level soft emission for two pairs of quarks},
author = {Xinguang Chen and Zhengwen Liu},
journal= {arXiv preprint arXiv:2411.08795},
year = {2024}
}
Comments
A computer-readable ancillary file. v2: typos fixed, references added