{
  "abstract": "We present the chiral Nelson-Barr relaxion model, an extension of the Nelson-Barr relaxion framework with a gauged chiral $\\mathrm{U}(1)$ symmetry. It includes vector-like quarks to cancel gauge anomalies and a scalar whose vacuum expectation value generates their masses. The chiral symmetry forbids the leading operators responsible for the Nelson-Barr and clockwork quality problems. Right-handed neutrinos generate light-neutrino masses through the type-I seesaw mechanism and permit thermal leptogenesis. For the particular coupling considered, relaxion phenomenology gives $f_{\\mathrm{max}}^{\\mathrm{pheno}}\\sim 4\\times 10^{11}\\ \\mathrm{GeV}$, about eight times the corresponding phenomenological ceiling in the original model. The model can accommodate thermal leptogenesis if its right-handed-neutrino masses and reheating history satisfy the required temperature bounds.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.30773",
  "author_total": 2,
  "authors": [
    {
      "name": "Cristien Arzate"
    },
    {
      "name": "Joshua Iascau"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3syc0smsdacg9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.30773",
  "fulltext_url": null,
  "id": "3syc0smsdacg9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.30773",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Particle physics theoretical and experimental studies"
    ]
  ],
  "openalex": "W7223321629",
  "pdf_url": "https://arxiv.org/pdf/2610.30773",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3syc0smsdacg9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.30773",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.30773"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "A Chiral Nelson-Barr Relaxion",
  "title_text": "A Chiral Nelson-Barr Relaxion",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/3syc0smsdacg9",
  "venue": "arXiv",
  "versions": []
}