Triple-collinear splittings with massive particles
High Energy Physics - Phenomenology
2023-12-29 v3
Abstract
We analyze in detail the most singular behaviour of processes involving triple-collinear splittings with massive particles in the quasi-collinear limit, and present compact expressions for the splitting amplitudes and the corresponding splitting kernels at the squared-amplitude level. Our expressions fully agree with well-known triple-collinear splittings in the massless limit, which are used as a guide to achieve the final expressions. These results are important to quantify dominant mass effects in many observables, and constitute an essential ingredient of current high-precision computational frameworks for collider phenomenology.
Cite
@article{arxiv.2310.05803,
title = {Triple-collinear splittings with massive particles},
author = {Prasanna K. Dhani and Germán Rodrigo and German F. R. Sborlini},
journal= {arXiv preprint arXiv:2310.05803},
year = {2023}
}
Comments
20 pages; journal version, results are provided in a Mathematica file