{
  "abstract": "Higgsino dark matter remains one of the most convincing dark matter candidates. It can exist in a ``quasi-Dirac\" regime, when the splitting between two Majorana components is on the order of $O(\\rm few~\\,MeV)$ or less. Owing to the strong gravitational pull of the Sun, the DM particles accelerate to up to $\\sim 1400$\\,km/sec in the solar core, which allows for inelastic scattering on heavy elements and very effective capture onto solar-bound trajectories. We evaluate the expected flux of the neutrinos from the expected $χχ\\to W^+W^-,ZZ$ annihilation for the cosmologically preferred mass, $m_χ\\simeq 1.08$\\,TeV while keeping the mass splitting $δ$ as a free parameter. Confronting it with the non-observation of high-energy neutrinos from the Sun by the IceCube experiment, we obtain a robust limit, $δ>566$\\,keV. These limits exclude the interpretation of the recent LZ event in terms of endothermic inelastic scattering of Higgsino dark matter on xenon nuclei.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.02775",
  "author_total": 2,
  "authors": [
    {
      "name": "Maxim Pospelov"
    },
    {
      "name": "Harikrishnan Ramani"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fkchyb2kmk0dg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.02775",
  "fulltext_url": null,
  "id": "fkchyb2kmk0dg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.02775",
  "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.CO"
    ],
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Dark Matter and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7207867208",
  "pdf_url": "https://arxiv.org/pdf/2609.02775",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fkchyb2kmk0dg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2609.02775",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.02775"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Strong Constraints on Higgsino Dark Matter from Solar Capture",
  "title_text": "Strong Constraints on Higgsino Dark Matter from Solar Capture",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/fkchyb2kmk0dg",
  "venue": "arXiv",
  "versions": []
}