{
  "abstract": "High-multiplicity events remain a bottleneck for LHC simulations due to their computational cost. We present a ML-surrogate approach to accelerate matrix element reweighting from leading-color (LC) to full-color (FC) accuracy, building on recent advancements in LC event generation. Comparing a variety of modern network architectures for representative QCD processes, we achieve speed-up of around a factor two over the current LC-to-FC baseline. We also show how transformers learn and exploit underlying symmetries, to improve generalization. Given the gained trust in trained networks and developments in learned uncertainties, the LC-to-FC approach will eventually benefit further from not needing a final classic unweighting step.",
  "abstract_shown": true,
  "affiliations": [
    "Heidelberg University",
    "Lund University",
    "Eötvös Loránd University",
    "Uppsala University",
    "INFN Sezione di Milano",
    "University of Milan"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Javier Mariño Villadamigo",
      "orcid": "0009-0002-9991-0372"
    },
    {
      "affs": [
        1
      ],
      "name": "Rikkert Frederix",
      "orcid": "0000-0002-7157-0778"
    },
    {
      "affs": [
        0
      ],
      "name": "Tilman Plehn",
      "orcid": "0000-0001-5660-7790"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Timea Vitos",
      "orcid": "0000-0001-7880-5851"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "Ramon Winterhalder",
      "orcid": "0000-0002-9902-578X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f3knjt4q9f2r5.bib",
  "cited_by": 19,
  "doi": "10.21468/scipostphys.21.1.001",
  "fulltext_url": null,
  "id": "f3knjt4q9f2r5",
  "issns": [
    "2542-4653"
  ],
  "landing_url": "https://doi.org/10.21468/scipostphys.21.1.001",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W4416064127",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-01",
  "publisher": "SciPost.org",
  "ris": "https://research.draconitic.com/paper/f3knjt4q9f2r5.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T13:20:45Z",
      "native_id": "W4416064127",
      "source": "openalex",
      "url": "https://doi.org/10.21468/scipostphys.21.1.001"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "FASTColor – Full-color amplitude surrogate toolkit for QCD",
  "title_text": "FASTColor – Full-color amplitude surrogate toolkit for QCD",
  "type": "peer-reviewed",
  "updated_at": "2026-11-07T13:20:45Z",
  "url": "https://research.draconitic.com/paper/f3knjt4q9f2r5",
  "venue": "SciPost Physics",
  "versions": []
}