{
  "abstract": "We report an indication of $\\barν_e$ from the diffuse supernova neutrino background (DSNB) based on a spectral fit analysis of a 5003.0-day dataset in Super-Kamiokande. Key improvements over previous searches include enhanced rejection of atmospheric $ν$ backgrounds, updated evaluations of systematic uncertainties, and a refined spectral fitting method. Using a representative DSNB model, the best-fit flux was determined to be $3.6^{+1.6}_{-1.5}~\\mathrm{cm^{-2}\\,s^{-1}}$ for $E_ν>13.3$~MeV, corresponding to a $2.6σ$ tension with a null hypothesis ($99.5\\%$ C.L., one-sided). Similar significances were obtained with signal models of varying spectral shapes.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.35619",
  "author_total": 251,
  "authors": [
    {
      "name": "Kamiokande Collaboration"
    },
    {
      "name": "K. Abe"
    },
    {
      "name": "Y. Asaoka"
    },
    {
      "name": "M. Harada"
    },
    {
      "name": "Y. Hayato"
    },
    {
      "name": "K. Hiraide"
    },
    {
      "name": "T. H. Hung"
    },
    {
      "name": "K. Ieki"
    },
    {
      "name": "M. Ikeda"
    },
    {
      "name": "J. Kameda"
    },
    {
      "name": "Y. Kataoka"
    },
    {
      "name": "S. Mine"
    },
    {
      "name": "M. Miura"
    },
    {
      "name": "S. Moriyama"
    },
    {
      "name": "K. Nakagiri"
    },
    {
      "name": "M. Nakahata"
    },
    {
      "name": "S. Nakayama"
    },
    {
      "name": "Y. Noguchi"
    },
    {
      "name": "G. Pronost"
    },
    {
      "name": "K. Sato"
    },
    {
      "name": "H. Sekiya"
    },
    {
      "name": "R. Shinoda"
    },
    {
      "name": "M. Shiozawa"
    },
    {
      "name": "Y. Suzuki"
    },
    {
      "name": "A. Takeda"
    },
    {
      "name": "Y. Takemoto"
    },
    {
      "name": "H. Tanaka"
    },
    {
      "name": "S. Chen"
    },
    {
      "name": "Y. Itow"
    },
    {
      "name": "T. Kajita"
    },
    {
      "name": "R. Nishijima"
    },
    {
      "name": "K. Okumura"
    },
    {
      "name": "T. Tashiro"
    },
    {
      "name": "T. Tomiya"
    },
    {
      "name": "X. Wang"
    },
    {
      "name": "F. J. de Garay Arcones"
    },
    {
      "name": "P. Fernandez"
    },
    {
      "name": "L. Labarga"
    },
    {
      "name": "D. Samudio"
    },
    {
      "name": "C. Yanagisawa"
    },
    {
      "name": "B. Jargowsky"
    },
    {
      "name": "E. Kearns"
    },
    {
      "name": "J. Mirabito"
    },
    {
      "name": "L. Wan"
    },
    {
      "name": "T. Wester"
    },
    {
      "name": "B. W. Pointon"
    },
    {
      "name": "J. Bian"
    },
    {
      "name": "B. Cortez"
    },
    {
      "name": "N. J. Griskevich"
    },
    {
      "name": "Y. Jiang"
    },
    {
      "name": "M. B. Smy"
    },
    {
      "name": "H. W. Sobel"
    },
    {
      "name": "V. Takhistov"
    },
    {
      "name": "J. Hill"
    },
    {
      "name": "B. D. Xu"
    },
    {
      "name": "D. Jung"
    },
    {
      "name": "D. H. Moon"
    },
    {
      "name": "R. G. Park"
    },
    {
      "name": "B. S. Yang"
    },
    {
      "name": "K. Scholberg"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fkkjccxcm2h1r.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.35619",
  "fulltext_url": null,
  "id": "fkkjccxcm2h1r",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.35619",
  "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.HE"
    ],
    [
      "arxiv",
      "hep-ex"
    ],
    [
      "openalex",
      "3106|Neutrino Physics Research"
    ]
  ],
  "openalex": "W7223914300",
  "pdf_url": "https://arxiv.org/pdf/2610.35619",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fkkjccxcm2h1r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.35619",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.35619"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Indication of Electron Antineutrinos from the Diffuse Supernova Neutrino Background",
  "title_text": "Indication of Electron Antineutrinos from the Diffuse Supernova Neutrino Background",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/fkkjccxcm2h1r",
  "venue": "arXiv",
  "versions": []
}