{
  "abstract": "The first evidence of electroweak (EW) production of pairs of Z bosons in association with two jets (jj) in the final state ZZjj $\\to$ $\\ell\\ellνν$jj, where $\\ell$ = e, $μ$, is reported by the CMS experiment. The analysis is based on a data sample of proton-proton (pp) collisions at $\\sqrt{s}$ = 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. Events are selected by requiring exactly two leptons of same flavor and opposite charge, large missing transverse momentum, and two jets with a large rapidity separation and large invariant mass. The EW production cross section in a fiducial volume is $σ_{\\mathrm{EW}}$(pp $\\to$ ZZjj $\\to$ $\\ell\\ellνν$jj) = 0.37 $^{+0.14}_{-0.12}$ (stat) $^{+0.06}_{-0.06}$ (syst) fb, in agreement with the standard model prediction of 0.39 $\\pm$ 0.06 fb. The observed (expected) significance of the signal is 3.1 (2.8) standard deviations. Limits on anomalous quartic gauge couplings are derived in terms of dimension-8 effective field theory operators. A combination with the previously reported result from the ZZ decay channel with four charged leptons yields an observed (expected) significance of 5.0 (4.5) standard deviations for the EW production of Z boson pairs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Lett. 137 (2026) 181801",
  "arxiv": "2606.20558",
  "author_total": 1,
  "authors": [
    {
      "name": "CMS Collaboration"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2ymnpj2z78gk1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.20558",
  "fulltext_url": null,
  "id": "2ymnpj2z78gk1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.20558",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ex"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.20558",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2ymnpj2z78gk1.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T18:21:30Z",
      "native_id": "2606.20558",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.20558"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Observation of electroweak production of pairs of Z bosons in proton-proton collisions at 13 TeV",
  "title_text": "Observation of electroweak production of pairs of Z bosons in proton-proton collisions at 13 TeV",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:33Z",
  "url": "https://research.draconitic.com/paper/2ymnpj2z78gk1",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/jydv-n2js",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}