Bothmann, Enrico;
Buckley, Andy;
Christidi, Ilektra A;
Gutschow, Christian;
Hoche, Stefan;
Knobbe, Max;
Martin, Tim;
(2022)
Accelerating LHC event generation with simplified pilot runs and fast PDFs.
The European Physical Journal C
, 82
, Article 1128. 10.1140/epjc/s10052-022-11087-1.
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Abstract
Poor computing efficiency of precision event generators for LHC physics has become a bottleneck for Monte-Carlo event simulation campaigns. We provide solutions to this problem by focusing on two major components of general-purpose event generators: The PDF evaluator and the matrix-element generator. For a typical production setup in the ATLAS experiment, we show that the two can consume about 80% of the total runtime. Using NLO simulations of pp→ ℓ+ℓ-+ jets and pp→ tt¯ + jets as an example, we demonstrate that the computing footprint of Lhapdf and Sherpa can be reduced by factors of order 10, while maintaining the formal accuracy of the event sample. The improved codes are made publicly available.
| Type: | Article |
|---|---|
| Title: | Accelerating LHC event generation with simplified pilot runs and fast PDFs |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-022-11087-1 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-022-11087-1 |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, MONTE-CARLO TOOLS, STANDARD INTERFACE, MODEL, SCATTERING |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10178107 |
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