{
  "abstract": "Primordial black holes (PBHs) can generate the Baryon Asymmetry of the Universe (BAU) through asymmetric capture of baryon-charge-carrying particles, but previous realizations of this mechanism typically yield an asymmetry well below the observed value because the relevant CP-violating scattering asymmetry is loop suppressed. We show that this limitation can be overcome through resonant CP violation in a mixed system of two nearly degenerate unstable fermions, $Y_{1,2}$, whose mass splitting is comparable to their decay widths. Rare production of the coherent $Y_1$--$Y_2$ state, followed by CP-asymmetric return and loss decays, generates an $\\mathcal{O}(0.1)$ difference in integrated decay probabilities while preserving the global baryon charge at the Lagrangian level. Embedding this resonant source in the PBH-capture transport system yields the observed baryon asymmetry. We first reproduce the mechanism in a zero-temperature, sudden-evaporation treatment, which gives $η_B^{T=0}\\simeq2.37\\times10^{-10}\\simeq2.72 η_B^{\\rm obs}$. We find that after including thermal corrections and continuous PBH evaporation and entropy production, the resulting BAU becomes $η_B = 8.72\\times 10^{-11}$ in agreement with the observed value. An interesting finding of the model is that even if PBH absorption remains active, we would still have BAU $η_{B}^{\\text{no evap}} \\sim 9.1 \\times 10^{-12} \\sim 0.105 η_B^{\\rm obs}$. We further investigate gravitational-wave signatures associated with the primordial fluctuations responsible for PBH formation. The corresponding scalar-induced gravitational-wave spectra peak at $f \\sim 0.16\\text{--}0.17~\\mathrm{MHz}$, with $h^2Ω_{\\rm GW}^{\\rm peak} \\sim (3\\text{--}7)\\times 10^{-8}$. Under idealized sensitivity assumptions, U-DECIGO can achieve signal-to-noise ratios above 10 for the benchmark spectra.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.33031",
  "author_total": 2,
  "authors": [
    {
      "name": "Fayez Abu-Ajamieh"
    },
    {
      "name": "Xiaoyan Huo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/66v55jdwnghr8.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.33031",
  "fulltext_url": null,
  "id": "66v55jdwnghr8",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.33031",
  "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": "W7215000162",
  "pdf_url": "https://arxiv.org/pdf/2609.33031",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-30",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/66v55jdwnghr8.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:48Z",
      "native_id": "2609.33031",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.33031"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Resonantly-Enhanced Baryogenesis through Asymmetric Capture by Primordial Black Holes",
  "title_text": "Resonantly-Enhanced Baryogenesis through Asymmetric Capture by Primordial Black Holes",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:36Z",
  "url": "https://research.draconitic.com/paper/66v55jdwnghr8",
  "venue": "arXiv",
  "versions": []
}