Soft-gluon coupling and the TMD parton branching Sudakov form factor
High Energy Physics - Phenomenology
2025-09-15 v2
Abstract
The evolution of transverse momentum dependent (TMD) distributions in Quantum Chromodynamics (QCD) can be formulated in a parton branching (PB) framework. We show that next-to-next-to-leading-logarithm (NNLL) accuracy can be achieved in this framework by using the concept of soft-gluon physical coupling. We present results for the TMD distributions and for the Collins-Soper kernel controlling rapidity evolution. The results pave the way for PB predictions at NNLL level for physical observables at the Large Hadron Collider (LHC) and future colliders.
Cite
@article{arxiv.2412.21116,
title = {Soft-gluon coupling and the TMD parton branching Sudakov form factor},
author = {A. Bermudez Martinez and F. Hautmann and L. Keersmaekers and A. Lelek and M. Mendizabal Morentin and S. Taheri Monfared and A. M. van Kampen},
journal= {arXiv preprint arXiv:2412.21116},
year = {2025}
}
Comments
7 pages, 2 figures. v2: comments and references added; results unchanged; matches published version