{
  "abstract": "We investigate the potential of Higgs cascade decays to probe neutralino dark matter below the neutrino floor in the semi-constrained Next-to-Minimal Supersymmetric Standard Model with nonuniversal gaugino masses. We focus on lightest-neutralino masses of 65 to 100 GeV and study the process $pp\\to H_2\\to A_1A_1\\toγγ+\\tildeχ_1^0\\tildeχ_1^0$, where $H_1$ is the observed SM-like Higgs boson, $H_2$ is a heavier CP-even state, and $A_1$ is the lightest CP-odd state. The selected parameter region lies near the $A_1$ resonance, with $m_{A_1}>2m_{\\tildeχ_1^0}$, allowing both resonantly enhanced neutralino annihilation and invisible $A_1$ decays. After imposing theoretical and experimental constraints, we find surviving samples with cascade signal cross sections of approximately 0.16 fb at $\\sqrt{s}=14~\\mathrm{TeV}$ even when their relic-density-rescaled spin-independent scattering cross sections lie below the neutrino floor. A Monte Carlo analysis of a representative benchmark point yields an expected statistical significance of approximately $6.1σ$ at the high-luminosity LHC with an integrated luminosity of $3000~\\mathrm{fb}^{-1}$, neglecting systematic uncertainties. These results highlight the potential of the diphoton plus missing transverse momentum channel as a complementary probe of neutralino dark matter.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.26545",
  "author_total": 4,
  "authors": [
    {
      "name": "Yabo Dong"
    },
    {
      "name": "Kun Wang"
    },
    {
      "name": "Haijun Yang"
    },
    {
      "name": "Jingya Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9f94d32cmyya0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.26545",
  "fulltext_url": null,
  "id": "9f94d32cmyya0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.26545",
  "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": "W7214077246",
  "pdf_url": "https://arxiv.org/pdf/2609.26545",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9f94d32cmyya0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.26545",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.26545"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Probing dark matter below the neutrino floor through NMSSM Higgs cascade decays at the HL-LHC",
  "title_text": "Probing dark matter below the neutrino floor through NMSSM Higgs cascade decays at the HL-LHC",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/9f94d32cmyya0",
  "venue": "arXiv",
  "versions": []
}