{
  "abstract": "We investigate the potential of surface detector arrays to identify ultra-high-energy neutrinos using vertical air showers with zenith angle $θ\\leq 60^\\circ$, a region largely unexplored in current searches. The method exploits the enhanced electromagnetic component at ground level arising from energetic leptons produced in neutrino interactions. Using detailed air-shower and detector simulations, we show that observables sensitive to the electromagnetic and muonic content provide genuine discrimination between neutrino-induced and hadron-induced showers. This is demonstrated both with idealized shower quantities and with realistic detector-level signals based on water-Cherenkov and scintillator detectors. The corresponding neutrino identification efficiency is used to derive the effective mass and, primarily, the effective area of the array under background-rejection requirements appropriate to targeted multi-messenger searches. Although not competitive with inclined-shower searches under the stringent background rejection factors required for diffuse-flux analyses, this approach establishes the feasibility of a vertical detection channel, extending the field of view of surface arrays and providing a complementary tool for multi-messenger observations of transient sources.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.21495",
  "author_total": 5,
  "authors": [
    {
      "name": "Jaime Alvarez-Muñiz"
    },
    {
      "name": "Ruben Conceição"
    },
    {
      "name": "Pedro J. Costa"
    },
    {
      "name": "David Dias"
    },
    {
      "name": "Mário Pimenta"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/43040njhm1c5p.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.21495",
  "fulltext_url": null,
  "id": "43040njhm1c5p",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.21495",
  "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",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3106|Astrophysics and Cosmic Phenomena"
    ]
  ],
  "openalex": "W7222691408",
  "pdf_url": "https://arxiv.org/pdf/2610.21495",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/43040njhm1c5p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.21495",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.21495"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Identification of ultra-high-energy neutrinos in vertical air showers with surface detectors",
  "title_text": "Identification of ultra-high-energy neutrinos in vertical air showers with surface detectors",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/43040njhm1c5p",
  "venue": "arXiv",
  "versions": []
}