{
  "abstract": "We study the signal topologies of Higgs-pair production in the semi-constrained NMSSM at large lambda and low tan(beta) at the HL-LHC (sqrt(s) = 13.6 TeV, L = 3000 fb^-1), using four benchmark points drawn from a parameter scan in which the LHC Higgs-sector constraints were not applied. The benchmarks cover exotic h1h1 -> 4a1 -> 8b (BP1, BP3), boosted h1h1 -> 4a1 -> 8tau (BP2) and SM-like (BP4) final states. Signals are simulated with MadGraph5_aMC@NLO, Pythia 8.316 and Delphes 3, with 10^5 events per benchmark. Background yields are taken from published analyses and serve only as illustrative estimates. In this revised version (v2) we add an a posteriori check with NMSSMTools. All four benchmark points are flagged: BP1-BP3 have BR(h1 -> a1a1) > 99%, in conflict with the limits on undetected Higgs decays and with CMS searches for h -> aa -> 4tau and 4b, and BP4 deviates from the measured b- and tau-couplings by more than 2 sigma. The benchmarks therefore do not represent experimentally allowed parameter points, the signal yields apply to the stated branching fractions only, and the earlier statement of 5 sigma sensitivity is withdrawn. The signal rate scales as BR(h -> aa)^2, so a branching fraction compatible with current limits would reduce the yields by one to two orders of magnitude. The detector-level characterisation of the topologies remains of methodological interest. For BP2 (m_a1 = 8.2 GeV), 82.4% of same-a1 tau pairs satisfy Delta R(tau,tau) < 0.4 owing to the boost gamma ~ 7.5, which motivates dedicated boosted-a1 tagging.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.11040",
  "author_total": 1,
  "authors": [
    {
      "name": "Marwa Telba"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/02w9m1pm1p6ya.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.11040",
  "fulltext_url": null,
  "id": "02w9m1pm1p6ya",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.11040",
  "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": "W7202417018",
  "pdf_url": "https://arxiv.org/pdf/2608.11040",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/02w9m1pm1p6ya.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2608.11040",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.11040"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Multi-Channel Di-Higgs Production in the scNMSSM: From Exotic 8b to Boosted 8tau Signatures at the HL-LHC",
  "title_text": "Multi-Channel Di-Higgs Production in the scNMSSM: From Exotic 8b to Boosted 8tau Signatures at the HL-LHC",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/02w9m1pm1p6ya",
  "venue": "arXiv",
  "versions": []
}