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arxiv: 2302.10449 · v2 · pith:W2V723GLnew · submitted 2023-02-21 · ✦ hep-ph · hep-ex

Efficient phase-space generation for hadron collider event simulation

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

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