{
  "abstract": "We study chains of vector-like fermions that generate the Yukawa hierarchies as products of small mixings, with the Higgs coupled at a single link. Minimal Flavour Protection allows these flavour messengers to live at the TeV scale, while Higgs naturalness offers a reason to place them there: in cosmological solutions based on Higgs criticality, their large multiplicity lowers the critical point of the Higgs potential to the TeV scale. Crucially, the same Higgs interactions induce tree-level shifts in the $Z$ and $W$ couplings of light fermions. Existing LEP and SLD measurements already bound $M_F/|y_F|\\gtrsim 3$ TeV, while a future Tera-$Z$ factory such as FCC-ee could probe up to $100$ TeV. It would test the parameter space most relevant to Higgs naturalness, reaching scenarios with Higgs-mass tuning at the level of $10^{-4}$ or worse in minimal realisations. Longer chains partially alleviate this tuning but do not eliminate it, making a Tera-$Z$ factory a decisive test of the framework.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05464",
  "author_total": 3,
  "authors": [
    {
      "name": "Admir Greljo"
    },
    {
      "name": "Xavier Ponce Díaz"
    },
    {
      "name": "Lia Schöneweiß"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/agd9gyc8se2e9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05464",
  "fulltext_url": null,
  "id": "agd9gyc8se2e9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05464",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05464",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/agd9gyc8se2e9.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05464",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05464"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Flavour Chains at the TeV Edge",
  "title_text": "Flavour Chains at the TeV Edge",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:18Z",
  "url": "https://research.draconitic.com/paper/agd9gyc8se2e9",
  "venue": "arXiv",
  "versions": []
}