{
  "abstract": "A background-constrained silicon-telescope methodology has been developed to investigate recently observed internal electron-positron pair creation in low-energy deuteron-deuteron fusion. The decay of the near-threshold $0^+$ resonance in $^4$He produced in DD fusion results in an $e^-e^+$ pair sharing a total energy of 22.84 MeV. These high-energy leptons traverse thin silicon detectors and deposit only part of their kinetic energy. The resulting partial-absorption peak structure overlaps with the natural-radiation background of cosmic-ray secondaries and terrestrial gamma rays. The silicon detector telescope used in the present experiments is characterised against this background through a component-by-component model that combines a GEANT4 cosmic-ray simulation, a large-volume NaI(Tl)-constrained terrestrial-gamma propagation, and a beam-correlated neutron response. Long-duration measurements in multiple orientations and shielding configurations are used to quantify the run-to-run variability of the background and to translate it into an explicit systematic envelope on the extracted signal. The framework is then applied to the beam-on singles spectrum and the two-dimensional coincidence response, yielding a quantitative branching-ratio measurement under background-limited conditions. The methodology is directly transferable to other weak-channel searches in surface laboratories where continuum-like signals overlap with natural-radiation backgrounds.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28645",
  "author_total": 7,
  "authors": [
    {
      "name": "Gokul Das Haridas"
    },
    {
      "name": "K. Czerski"
    },
    {
      "name": "S. Thulichery"
    },
    {
      "name": "R. Dubey"
    },
    {
      "name": "M. Valat"
    },
    {
      "name": "N. Targosz-Ślęczka"
    },
    {
      "name": "A. Kowalska"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1nmkhh2x52q1m.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28645",
  "fulltext_url": null,
  "id": "1nmkhh2x52q1m",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28645",
  "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",
      "nucl-ex"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "3106|Nuclear physics research studies"
    ]
  ],
  "openalex": "W7223224401",
  "pdf_url": "https://arxiv.org/pdf/2610.28645",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1nmkhh2x52q1m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:18Z",
      "native_id": "2610.28645",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28645"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-ex",
      "subfield": "nuclear"
    }
  ],
  "title": "Background-Limited Silicon Telescope Methodology for Weak Internal Pair Creation Transition in Low-Energy Deuteron-Deuteron Reactions",
  "title_text": "Background-Limited Silicon Telescope Methodology for Weak Internal Pair Creation Transition in Low-Energy Deuteron-Deuteron Reactions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:18Z",
  "url": "https://research.draconitic.com/paper/1nmkhh2x52q1m",
  "venue": "arXiv",
  "versions": []
}