{
  "abstract": "We investigate the cosmological moduli problem (CMP) in the context of supersymmetric models where discrete R-symmetries are used to suppress the mu term, and where mu is regenerated via Kim--Nilles superpotential operators. In such theories, a global U(1)_{PQ} emerges as an accidental, approximate symmetry which solves the strong CP problem. R-parity is also generated as accidental but approximate, where RPV operators gain a (f_a/m_P)^n suppression. When n=1, the thermally-produced LSPs may decay before BBN in the early universe, leaving axion-only dark matter of the SUSY DFSZ type. Meanwhile, the dominant cosmological constraint on light stringy moduli previously came from the modulus-induced WIMP overproduction problem. WIMP overproduction is now ameliorated by the RPV WIMP decays, but the moduli-induced BBN bound may be exacerbated by convolving long-lived modulus decay with long-lived RPV WIMP decay: long-lived particle (LLP) cascade decays. In this context, moduli as light as m_ϕ~ 130 TeV may be allowed which can reconcile naturalness with the presence of stringy moduli in the early universe.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.04412",
  "author_total": 3,
  "authors": [
    {
      "name": "Howard Baer"
    },
    {
      "name": "Vernon Barger"
    },
    {
      "name": "Robert Wiley Deal"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0z8yc2qqvmqwd.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.04412",
  "fulltext_url": null,
  "id": "0z8yc2qqvmqwd",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.04412",
  "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": "W7211907313",
  "pdf_url": "https://arxiv.org/pdf/2609.04412",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0z8yc2qqvmqwd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:14Z",
      "native_id": "2609.04412",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.04412"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Cosmological moduli problem ameliorated by decaying WIMPs",
  "title_text": "Cosmological moduli problem ameliorated by decaying WIMPs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:14Z",
  "url": "https://research.draconitic.com/paper/0z8yc2qqvmqwd",
  "venue": "arXiv",
  "versions": []
}