{\tt ggxy}: a flexible library to compute gluon-induced cross sections
Abstract
We present the library {\tt ggxy}, written in {\tt C++}, which can be used to compute partonic and hadronic cross sections for gluon-induced processes with at least one closed heavy quark loop. It is based on analytic ingredients which avoids, to a large extent, expensive numerical integration. This results in significantly shorter run-times than other similar tools. Modifying input parameters, changing the renormalization scheme and varying renormalization and factorization scales is straightforward. In Version~1 of {\tt ggxy} we implement all routines which are needed to compute partonic and hadronic cross sections for Higgs boson pair production up to next-to-leading order in QCD. We provide flexible interfaces and allow the user to interact with the built-in amplitudes at various levels.
Cite
@article{arxiv.2506.04323,
title = {{\tt ggxy}: a flexible library to compute gluon-induced cross sections},
author = {Joshua Davies and Kay Schönwald and Matthias Steinhauser and Daniel Stremmer},
journal= {arXiv preprint arXiv:2506.04323},
year = {2025}
}
Comments
28 pages, v2: ggxy is now available within the POWHEG-BOX V2 framework