{
  "abstract": "Different stages of cosmic evolution impose different requirements on the dark matter annihilation cross section. Sommerfeld enhancement provides a possible way to accommodate them. However, in the point-like dark matter scenario, satisfying these requirements with either $s$-wave or $p$-wave Sommerfeld enhancement can strongly constrain the dark matter and mediator masses and their coupling. A finite dark matter size introduces an additional parameter and may relax these constraints. Motivated by this possibility, in this work we study the $p$-wave Sommerfeld resonances of finite-size dark matter (like proton or neutron) without specifying its internal structure. We find that the $p$-wave contribution can exceed the $s$-wave contribution. Nevertheless, the finite-size $p$-wave resonances are weaker than those in the point-like case. Despite this suppression, their velocity dependence remains similar to that of point-like dark matter. We then extend our analysis to nugget dark matter composed of a small number of constituents. In this case, the $p$-wave Sommerfeld enhancement exhibits behavior similar to that of point-like dark matter.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.11166",
  "author_total": 3,
  "authors": [
    {
      "name": "Wu-Long Xu"
    },
    {
      "name": "Jin Min Yang"
    },
    {
      "name": "Rui Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d9zzszm51qneb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.11166",
  "fulltext_url": null,
  "id": "d9zzszm51qneb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.11166",
  "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",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3106|Dark Matter and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7221179454",
  "pdf_url": "https://arxiv.org/pdf/2610.11166",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/d9zzszm51qneb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.11166",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.11166"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Analysis of p-Wave Sommerfeld Resonance Behavior in Finite-Size Dark Matter",
  "title_text": "Analysis of p-Wave Sommerfeld Resonance Behavior in Finite-Size Dark Matter",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/d9zzszm51qneb",
  "venue": "arXiv",
  "versions": []
}