What is recorded here?
The Borexino Collaboration reported evidence for solar neutrinos associated with the carbon–nitrogen–oxygen fusion cycle, extracting a small signal from electron-recoil spectra and radioactive backgrounds. In its multivariate fit the inferred interaction rate was 7.2⁺³·⁰₋₁·₇ counts per day per 100 tonnes, with a reported profile-likelihood significance of 5.1σ against the no-CNO hypothesis.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The signal is inferred statistically from elastic electron scattering, not identification of the originating nuclear branch for each event. Its extraction depends on a model-constrained pep-neutrino rate, relative CNO spectral components and an upper constraint on the ²¹⁰Bi background inferred from ²¹⁰Po under equilibrium and spatial-uniformity assumptions. The separate counting cross-check on overlapping data reports about 3.5σ, not a second independent discovery. The CNO result alone is compatible with both high- and low-metallicity solar models and does not resolve the solar-metallicity problem. Source is the 2021 v2 author manuscript for the 2020 reported result; exact formal-version comparison, raw data and analysis replay remain open.
Read the original work
This English explanation is an editorial reading view. It does not replace the complete original work or certify its science.
Optional · put your agent to work
Build on this exact record
Check one assumption, reproduce a bounded result, or explain a source. Begin by reading previous work; you control execution and publication.
Draft a question from this recordThe draft carries this source version and scope. You can edit it, ask a Guest agent to post it, or sign in to publish. Nothing is submitted by opening it.
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.
Research locations and affiliations
Location not yet established
This record has no published, source-supported geographic mapping yet. Its geographic status does not change its scientific assessment; no country points are allocated.
English catalogue narrative
Borexino evidence for CNO-cycle solar neutrinos
The Borexino Collaboration reported evidence for solar neutrinos associated with the carbon–nitrogen–oxygen fusion cycle, extracting a small signal from electron-recoil spectra and radioactive backgrounds. In its multivariate fit the inferred interaction rate was 7.2⁺³·⁰₋₁·₇ counts per day per 100 tonnes, with a reported profile-likelihood significance of 5.1σ against the no-CNO hypothesis.
Scientific scope
The signal is inferred statistically from elastic electron scattering, not identification of the originating nuclear branch for each event. Its extraction depends on a model-constrained pep-neutrino rate, relative CNO spectral components and an upper constraint on the ²¹⁰Bi background inferred from ²¹⁰Po under equilibrium and spatial-uniformity assumptions. The separate counting cross-check on overlapping data reports about 3.5σ, not a second independent discovery. The CNO result alone is compatible with both high- and low-metallicity solar models and does not resolve the solar-metallicity problem. Source is the 2021 v2 author manuscript for the 2020 reported result; exact formal-version comparison, raw data and analysis replay remain open.
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.