ALARIC parton shower for hadron colliders

Höche, Stefan; Krauss, Frank; Reichelt, Daniel

doi:10.1103/PhysRevD.111.094032

ALARIC parton shower for hadron colliders

Journal Article · Thu May 22 00:00:00 EDT 2025 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.111.094032· OSTI ID:2568213

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Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Durham Univ. (United Kingdom). Institute for Particle Physics Phenomenology

We introduce the parton shower for simulating quantum chromodynamics (QCD) radiation at hadron colliders and present numerical results from an implementation in the event generator . provides a consistent framework to quantify certain systematic uncertainties which cannot be eliminated by comparing the parton shower with analytic resummation. In particular, it allows us to study recoil effects away from the soft and collinear limits without the need to change the evolution variable or the splitting functions. We assess the performance of in Drell-Yan lepton pair and QCD jet production, and present the first multijet merging for the new algorithm.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: FermiForward Discovery Group, LLC; Science and Technology Facilities Council; USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: 89243024CSC000002; AC02-07CH11359

OSTI ID:: 2568213

Alternate ID(s):: OSTI ID: 2349021

Report Number(s):: FERMILAB-PUB--24-0178-T; IPPP/24/20; MCNET-24-07; arXiv:2404.14360; oai:inspirehep.net:2779511

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 9 Vol. 111; ISSN 2470-0029; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Event generators for high-energy physics experiments Campbell, J. M.; Diefenthaler, M.; Hobbs, T. J. SciPost Physics, Vol. 16, Issue 5 https://doi.org/10.21468/SciPostPhys.16.5.130	journal	May 2024
Event generation with Sherpa 2.2 Bothmann, Enrico; Singh Chahal, Gurpreet; Höche, Stefan SciPost Physics, Vol. 7, Issue 3 https://doi.org/10.21468/SciPostPhys.7.3.034	journal	January 2019
A comprehensive guide to the physics and usage of PYTHIA 8.3 Bierlich, Christian; Chakraborty, Smita; Desai, Nishita SciPost Physics Codebases https://doi.org/10.21468/SciPostPhysCodeb.8	journal	November 2022

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