Breakthrough Tracker record
Direct observation of coherent elastic antineutrino–nucleus scattering
CONUS+ inferred 395 ± 106 reactor-antineutrino signal events, consistent with the Standard Model expectation of 347 ± 59. The reported significance was 3.7σ.
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- Stable ID
reactor-antineutrino-cevns-2025- Revision
reactor-antineutrino-cevns-2025.v1- Field
- Physics · Neutrino and nuclear physics
- Evidence
- Tier 1 · Peer reviewed: Yes
- Record state
- Current · Peer-reviewed observation with statistical-strength caveat
- Last checked
AI role
No AI assistance was disclosed in the paper or linked reporting.
Record details
- Problem or result
- Detecting coherent elastic neutrino–nucleus scattering with low-energy reactor antineutrinos
- Authors
- N. Ackermann, H. Bonet, A. Bonhomme, C. Buck and the CONUS Collaboration
- Institutions
- Max Planck Institute for Nuclear Physics and the Brokdorf and Leibstadt nuclear plants
- Result date
- Preprint April 1, 2025; published July 30, 2025
Why it matters
Reactor CEνNS enables compact neutrino detectors and a clean low-energy test of the Standard Model.
Limits
CEνNS was first observed by COHERENT in 2017 with higher-energy accelerator neutrinos; the novelty is the reactor-antineutrino signal in the fully coherent regime. Its 3.7σ strength is below the conventional 5σ particle-physics discovery threshold.
Sources
- Primary: CONUS+ paper in Nature
- Independent: Max Planck Institute technical explanation
Correction and revision history
- Initial entry.
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