{
  "abstract": "We investigate the diphoton excesses near $152~\\mathrm{GeV}$ accompanied by missing transverse momentum (MET) in the Type-I two-Higgs-doublet model extended by a complex scalar singlet, whose imaginary component serves as a pseudo-Nambu-Goldstone dark matter (DM) candidate $χ$. The signal arises from the cascade process $gg\\to h_3\\to h_2h_2\\toγγχχ$, where $h_2$ is the scalar resonance near $152~\\mathrm{GeV}$ and $h_3$ is a heavier CP-even scalar. After imposing the theoretical and experimental constraints, we identify parameter regions that accommodate at least one of the Low-MET and High-MET excesses within $1σ$ and simultaneously reproduce the observed DM relic density within an assumed $10\\%$ theoretical uncertainty. A subset of these samples supports first-order electroweak phase transitions with substantial supercooling. For a three-year observation, selected samples yield gravitational-wave signals with signal-to-noise ratios (SNRs) above $10$ at LISA, TianQin, DECIGO, and BBO. A representative benchmark that accommodates both excesses within their respective $1σ$ intervals and satisfies the relic-density requirement yields a three-year BBO SNR of approximately $173$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.39057",
  "author_total": 5,
  "authors": [
    {
      "name": "Yabo Dong"
    },
    {
      "name": "Jun Fan"
    },
    {
      "name": "Kun Wang"
    },
    {
      "name": "Haijun Yang"
    },
    {
      "name": "Jingya Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/esp8kf8ed952d.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.39057",
  "fulltext_url": null,
  "id": "esp8kf8ed952d",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.39057",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.39057",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/esp8kf8ed952d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:23Z",
      "native_id": "2610.39057",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.39057"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Linking a 152 GeV diphoton excess to dark matter and gravitational waves in the singlet-extended 2HDM",
  "title_text": "Linking a 152 GeV diphoton excess to dark matter and gravitational waves in the singlet-extended 2HDM",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:45Z",
  "url": "https://research.draconitic.com/paper/esp8kf8ed952d",
  "venue": "arXiv",
  "versions": []
}