Efficient phase-space generation for hadron collider event simulation

• DOI: 10.48550/arxiv.2302.10449
• Publication Date: 2023-01-01
• Authors: Enrico Bothmann; J. T. Childers; Walter T. Giele; Florian Herren; Stefan Hoeche; Joshua Isaacsson; Max Knobbe; Rui Wang
• Keywords: Diagrammatic reasoning; Factorial; Code (set theory)

We present a simple yet efficient algorithm for phase-space integration at hadron colliders. Individual mappings consist of single t-channel combined with any number s-channel decays, and are constructed using diagrammatic information. The factorial growth in the channels is tamed by providing an option to limit topologies. provide publicly available, parallelized code C++ test its performance typical LHC scenarios.