What is recorded here?
Using heavy water, the SNO Collaboration separated charged-current, neutral-current and elastic-scattering contributions from solar boron-8 neutrinos. Assuming the standard boron-8 spectrum, it inferred a non-electron active-neutrino flux of 3.41 × 10⁶ cm⁻² s⁻¹, reported as 5.3σ above zero, providing strong evidence for flavor transformation.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The result uses 306.4 live days from the pure heavy-water phase, a 5 MeV reconstructed electron-energy threshold, Monte Carlo response models and measured radioactive backgrounds. The 5.3σ result assumes the standard boron-8 spectral shape; the spectrum-unconstrained neutral-current flux has a larger uncertainty. The neutral-current signal measures total active flavors, without separately resolving muon and tau neutrinos. Adding Super-Kamiokande data changes the reported significance and is not the standalone SNO result.
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People and systems
Credit belongs to the cited collaborations. The individual author list is incomplete; no sole discoverer or individual effort share is inferred. The recorded author list is incomplete.
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English catalogue narrative
SNO neutral-current evidence for solar neutrino flavor transformation
Using heavy water, the SNO Collaboration separated charged-current, neutral-current and elastic-scattering contributions from solar boron-8 neutrinos. Assuming the standard boron-8 spectrum, it inferred a non-electron active-neutrino flux of 3.41 × 10⁶ cm⁻² s⁻¹, reported as 5.3σ above zero, providing strong evidence for flavor transformation.
Scientific scope
The result uses 306.4 live days from the pure heavy-water phase, a 5 MeV reconstructed electron-energy threshold, Monte Carlo response models and measured radioactive backgrounds. The 5.3σ result assumes the standard boron-8 spectral shape; the spectrum-unconstrained neutral-current flux has a larger uncertainty. The neutral-current signal measures total active flavors, without separately resolving muon and tau neutrinos. Adding Super-Kamiokande data changes the reported significance and is not the standalone SNO result.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Credit belongs to the cited collaborations. The individual author list is incomplete; no sole discoverer or individual effort share is inferred.