{
  "abstract": "We study Standard Model Effective Field Theory (SMEFT) extensions in portal-mediated scattering processes from the perspective of quantum entanglement. Quantum information metrics maintain phase-sensitive spin and momentum correlations, whereas conventional collider and direct detection observables mainly depend on unpolarized cross-sections and event rates, which often suppress dimension-six interference terms or average over internal degrees of freedom. We assess linear and Von Neumann entropy fluctuations induced by higher-dimensional operator insertions by building final-state density matrices using helicity amplitudes. By avoiding conventional kinematic degeneracies, our formulation shows that entanglement measures capture interference contributions linearly in $1/Λ^2$, offering improved sensitivity to new physics scales. A theoretical framework for SMEFT Wilson coefficients is established by this information-theoretic method, creating new opportunities for accurate tests of fundamental interactions in high-energy and astroparticle physics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.09751",
  "author_total": 2,
  "authors": [
    {
      "name": "Shilpa Jangid"
    },
    {
      "name": "Hiroshi Okada"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/45gvcy12etdnc.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.09751",
  "fulltext_url": null,
  "id": "45gvcy12etdnc",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.09751",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7220971952",
  "pdf_url": "https://arxiv.org/pdf/2610.09751",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/45gvcy12etdnc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:37Z",
      "native_id": "2610.09751",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.09751"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "SMEFT Constraints via Quantum Entanglement in Portal-Mediated Scattering",
  "title_text": "SMEFT Constraints via Quantum Entanglement in Portal-Mediated Scattering",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:37Z",
  "url": "https://research.draconitic.com/paper/45gvcy12etdnc",
  "venue": "arXiv",
  "versions": []
}