{
  "abstract": "A mixed leptogenesis source and its low-energy neutrino portal depend on the same heavy-particle amplitudes. We determine how this common origin restricts matching cancellations and the scalar population produced during reheating. For two Majorana mass levels, each containing a degenerate pair, the inclusive lepton-number-violating invariant fixes an allowed norm domain for the mixed dimension-five coefficient at specified threshold strengths. An aligned flavour texture makes the conventional source vanish as a matrix and gives equal coupling norms for the two massive neutrinos. A continuous family preserves the neutrino-mass fit while relating the source to unequal light coupling strengths. The matched couplings give benchmark vacuum lifetimes of $1.62\\times10^{12}\\,\\mathrm{s}$ and $2.80\\times10^{11}\\,\\mathrm{s}$, while reheating normalized to the baryon abundance determines the primary spectrum. In the massless Born approximation with dilute outgoing states, bath-produced scalars carry $4.81\\times10^{-5}$ of the primary scalar energy but contribute $11.1$ times its variance. The positive production functional converts the matching constraint into a conditional variance bound. We derive the scalar-mass dependence of stimulated emission and the Hartree moment equation, keeping the scalar mass and quartic as renormalized matching inputs. These results link the leptogenesis source to light-neutrino decay and the finite-density quantities entering subsequent coupled transport.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.14708",
  "author_total": 1,
  "authors": [
    {
      "name": "Yingnan Xu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/6qt1wrg6td5g1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.14708",
  "fulltext_url": null,
  "id": "6qt1wrg6td5g1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.14708",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7221783924",
  "pdf_url": "https://arxiv.org/pdf/2610.14708",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-10",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/6qt1wrg6td5g1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.14708",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.14708"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Mixed leptogenesis sources and low-energy neutrino portals",
  "title_text": "Mixed leptogenesis sources and low-energy neutrino portals",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/6qt1wrg6td5g1",
  "venue": "arXiv",
  "versions": []
}