{
  "abstract": "The hierarchy of fermion masses and mixings lacks a self-consistent theoretical explanation at the dynamical or symmetry level, and the origin of CP violation remains unclear. These two issues have long been major challenges in particle physics. In this paper, we investigate the quark sector of a four-Higgs-doublet model with an exact D5 symmetry. Within the framework of explicit CP violation, we consider the most general real vacuum, and perform a numerical fit of the quark mass spectrum and the CKM matrix using a Differential Evolution. We demonstrate that the model achieves an excellent overall goodness of fit with χ2 = 6.97, and the Jarlskog invariant JCP = 3.144 × 10−5 agrees with the experimental value within 0.19σ. This indicates that the new source of CP violation provided by the model is consistent to generate the observed CP violation in the quark sector. Moreover, the hierarchies inherent in the vacuum expectation values and the quark Yukawa couplings naturally explain the observed hierarchy of the quark masses and mixing parameters.",
  "abstract_shown": true,
  "affiliations": [
    "Sun Yat-sen University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Dong-Ping Fu",
      "orcid": "0009-0001-8089-1135"
    },
    {
      "affs": [
        0
      ],
      "name": "Michihisa Takeuchi",
      "orcid": "0000-0002-2565-7610"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5y4j4vrwgqy4h.bib",
  "cited_by": 0,
  "doi": "10.1007/jhep10(2026)248",
  "fulltext_url": null,
  "id": "5y4j4vrwgqy4h",
  "issns": [
    "1029-8479"
  ],
  "landing_url": "https://link.springer.com/article/10.1007/JHEP10(2026)248",
  "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": [
    [
      "feed-journal",
      "physics/high-energy"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7162430826",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/JHEP10(2026)248.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/5y4j4vrwgqy4h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.1007/jhep10(2026)248",
      "source": "feed-springer",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)248"
    },
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "10.1007/jhep10(2026)248",
      "source": "crossref",
      "url": "https://link.springer.com/article/10.1007/JHEP10(2026)248"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Particle physics theoretical and experimental studies",
      "subfield": "high-energy"
    }
  ],
  "title": "A D5 model of quarks with explicit CP violation",
  "title_text": "A D5 model of quarks with explicit CP violation",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/5y4j4vrwgqy4h",
  "venue": "Journal of High Energy Physics",
  "versions": [
    {
      "doi": "10.48550/arxiv.2605.25300",
      "pid": "f6v915hnf6eg3",
      "relation": "preprint",
      "title": "A D_5 Model of Quarks with Explicit CP Violation",
      "venue": "arXiv"
    }
  ]
}