{
  "abstract": "A bstract : We study the impact of light GeV-scale heavy neutral leptons (HNLs) on Big Bang nucleosynthesis (BBN) in the neutrino-extended Standard Model Effective Field Theory ( ν SMEFT). We show that, based on very general considerations, BBN constraints complement laboratory searches at colliders, beam dumps, and neutrinoless double beta decay, by providing an upper bound on the cut-off scale of the effective field theory for HNL masses above ~ 100 MeV. We identify target regions for future laboratory probes of the ν SMEFT parameter space, bounded from above and below, and illustrate them in representative scenarios, including EFT benchmarks based on operator subsets with universal Wilson coefficients.",
  "abstract_shown": true,
  "affiliations": [
    "University of Amsterdam",
    "Nikhef, Theory Group",
    "Bethe Center for Theoretical Physics & Physikalisches Institut der Universität Bonn",
    "University of Zagreb"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Pieter Braat",
      "orcid": "0000-0001-5022-7818"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jordy de Vries",
      "orcid": "0000-0001-5037-5108"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jelle Groot",
      "orcid": "0009-0006-5634-4875"
    },
    {
      "affs": [
        2
      ],
      "name": "Julian Y. Günther",
      "orcid": "0000-0003-3233-4753"
    },
    {
      "affs": [
        0,
        1,
        3
      ],
      "name": "Juraj Klarić",
      "orcid": "0000-0001-9468-5351"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2pfp87e5669tx.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)103",
  "fulltext_url": null,
  "id": "2pfp87e5669tx",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)103",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7129051678",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)103.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/2pfp87e5669tx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)103",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)103"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "Big Bang nucleosynthesis and the neutrino-extended Standard Model Effective Field Theory",
  "title_text": "Big Bang nucleosynthesis and the neutrino-extended Standard Model Effective Field Theory",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/2pfp87e5669tx",
  "venue": "Journal of High Energy Physics",
  "versions": []
}