{
  "abstract": "Searches for permanent electric dipole moments (EDMs) probe new sources of CP violation beyond the Standard Model. The atomic EDM of $^{171}\\text{Yb}$, which is sensitive to its nuclear Schiff moment, is a promising candidate, but previous measurements were limited by noise and systematic effects induced by the optical dipole trap (ODT) that holds the atoms. Here we report a substantially improved search enabled by a dual-ODT configuration with orthogonal polarizations, and spin measurements for precise alignment of static and optical fields. By suppressing the key parity-mixing systematic effect and vector light-shift noise, we achieve a limit of $|d(^{171}\\mathrm{Yb})| < 7.5 \\times 10^{-28}\\ e\\cdot\\text{cm}$ (95\\% C.L.), which represents a 20-fold improvement over the previous work. We also present the first calculation of the nuclear structure factors of the Schiff moment of $^{171}\\text{Yb}$. The experimental and theoretical advances combine to tighten constraints on CP-violating pion-nucleon couplings in a global analysis. Moreover, this work demonstrates a pathway toward future measurements in $^{225}\\text{Ra}$, where nuclear deformation offers exceptional sensitivity to physics beyond the Standard Model.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.22739",
  "author_total": 7,
  "authors": [
    {
      "name": "S. -Z. Wang"
    },
    {
      "name": "S. -B. Wang"
    },
    {
      "name": "E. F. Zhou"
    },
    {
      "name": "Z. -J. Tao"
    },
    {
      "name": "J. -M. Yao"
    },
    {
      "name": "T. Xia"
    },
    {
      "name": "Z. -T. Lu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fy3hfadh6dhz4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.22739",
  "fulltext_url": null,
  "id": "fy3hfadh6dhz4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.22739",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.atom-ph"
    ],
    [
      "openalex",
      "3107|Atomic and Subatomic Physics Research"
    ]
  ],
  "openalex": "W7222968690",
  "pdf_url": "https://arxiv.org/pdf/2610.22739",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fy3hfadh6dhz4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:32Z",
      "native_id": "2610.22739",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.22739"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    }
  ],
  "title": "An improved limit on $^{171}\\text{Yb}$ electric dipole moment",
  "title_text": "An improved limit on ^171Yb electric dipole moment",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:28Z",
  "url": "https://research.draconitic.com/paper/fy3hfadh6dhz4",
  "venue": "arXiv",
  "versions": []
}