Directionality measurement of CNO neutrinos with Borexino detector
Research output: Contribution to journal › Conference article › Contributed › peer-review
Contributors
- Chair of Nuclear Physics
- University of Milan
- Princeton University
- University of Genoa
- Lomonosov Moscow State University
- Institute for Celestial Mechanics and Computation of Ephemerides
- Gran Sasso Science Institute
- Johannes Gutenberg University Mainz
- Jagiellonian University in Kraków
- National Academy of Sciences of Ukraine
- Royal Holloway University of London
- Institute for Nuclear Research
- RWTH Aachen University
- Moscow Engineering Physics Institute
- Technical University of Munich
- University of Perugia
- TUD Dresden University of Technology
Abstract
In the following, the first measurement of CNO solar neutrinos obtained by Borexino by exploiting the directional information retained by solar neutrino is summarized [1]. The Correlated Integrated Directionality (CID) method makes use of the sub-dominant Cherenkov light emitted by the Borexino liquid scintillator to correlate between the first few detected photons in each event and the known position of the Sun for each event and, therefore, to discriminate between the signal and the radioactive background on a statistical basis. By applying this technique to the complete 2007-2021 Borexino dataset, the hypothesis of no CNO neutrinos is rejected with >5σ posterior probability, without making use of any information on the background levels in the scintillator.
Details
Original language | English |
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Article number | 158 |
Journal | Proceedings of Science |
Volume | 441 |
Publication status | Published - 22 Mar 2024 |
Peer-reviewed | Yes |
Conference
Title | 18th International Conference on Topics in Astroparticle and Underground Physics |
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Abbreviated title | TAUP 2023 |
Conference number | 18 |
Duration | 28 August - 1 September 2023 |
Website | |
Location | Universität Wien |
City | Wien |
Country | Austria |