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Peer-reviewedCC BY 4.0SciPost

Dark matter interpretation of the Super-Kamiokande antineutrino excess and predictions for JUNO

  • Alessandro Granelli1
  • Silvia Pascoli2,3
  • Salvador Rosauro-Alcaraz4,5
5 affiliations
  1. 1Institute for Corpuscular Physics
  2. 2INFN Bologna
  3. 3University of Bologna
  4. 4Laboratoire de Physique de Clermont Auvergne
  5. 5University of Clermont Auvergne
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Abstract

Super-Kamiokande has reported a small excess of electron antineutrino events in the 20 MeV energy range, in the search for the diffuse supernova neutrino background. We interpret this signal as a possible indication of dark matter that annihilates dominantly into neutrinos, pointing to a thermal dark matter candidate with s s -wave annihilation and with mass in the tens of MeV range. This mass scale naturally fits into rich dark sector extensions of the Standard Model. Neutrino experiments, including JUNO, will be able to test this hypothesis in the coming years.

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Cite

BibTeXRIS
BibTeX
@article{granelli2026dark,
  title = {{Dark matter interpretation of the Super-Kamiokande antineutrino excess and predictions for JUNO}},
  author = {Alessandro Granelli and Silvia Pascoli and Salvador Rosauro-Alcaraz},
  journal = {SciPost},
  year = {2026},
  month = oct,
  doi = {10.21468/scipostphys.21.4.106},
  url = {http://scipost.org/SciPostPhys.21.4.106},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Dark matter interpretation of the Super-Kamiokande antineutrino excess and predictions for JUNO
AU  - Alessandro Granelli
AU  - Silvia Pascoli
AU  - Salvador Rosauro-Alcaraz
PY  - 2026
DA  - 2026/10/27
JO  - SciPost
DO  - 10.21468/scipostphys.21.4.106
UR  - http://scipost.org/SciPostPhys.21.4.106
AB  - Super-Kamiokande has reported a small excess of electron antineutrino events in the 20 MeV energy range, in the search for the diffuse supernova neutrino background. We interpret this signal as a possible indication of dark matter that annihilates dominantly into neutrinos, pointing to a thermal dark matter candidate with s s -wave annihilation and with mass in the tens of MeV range. This mass scale naturally fits into rich dark sector extensions of the Standard Model. Neutrino experiments, including JUNO, will be able to test this hypothesis in the coming years.
SN  - 2542-4653
ER  -