{
  "abstract": "We update an $SU(3)_F$ analysis of $D\\to PP$ decays ($P\\equiv π, K$) in which the dominant $SU(3)_F$-breaking effects are modeled through final-state interactions. The new fit improves the description relative to the previous parameter set, although significant global tension remains, mainly in charged-$D$ modes. Within the adopted rescattering model, the direct CP asymmetries in $D^0\\toπ^+π^-$, $K^+K^-$, $π^0π^0$, and $K_S^0 K_S^0$ depend on two additional reduced amplitudes. Using the $D^0\\toπ^+π^-$ and $D^0\\to K^+K^-$ asymmetries as inputs, we derive conditional predictions for the two neutral modes. The OZI-motivated benchmark $Δ_4=0$ is mildly disfavored by the charged-mode asymmetries and leads to substantially smaller asymmetries in the neutral modes, which can be tested with more precise $K_S^0K_S^0$ and $π^0π^0$ measurements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.04014",
  "author_total": 2,
  "authors": [
    {
      "name": "Franco Buccella"
    },
    {
      "name": "Pietro Santorelli"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3gg66dekfknjx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.04014",
  "fulltext_url": null,
  "id": "3gg66dekfknjx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.04014",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2611.04014",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3gg66dekfknjx.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:25Z",
      "native_id": "2611.04014",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.04014"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Branching Fractions and CP-Violating Asymmetries in D => PP Decays",
  "title_text": "Branching Fractions and CP-Violating Asymmetries in D => PP Decays",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/3gg66dekfknjx",
  "venue": "arXiv",
  "versions": []
}