Journal article
Measurement of the 8B solar neutrino flux in SNO+ with very low backgrounds
- Abstract:
- A measurement of the 8B solar neutrino flux has been made using a 69.2 kt-day dataset acquired with the SNO+ detector during its water commissioning phase. At energies above 6 MeV the dataset is an extremely pure sample of solar neutrino elastic scattering events, owing primarily to the detector’s deep location, allowing an accurate measurement with relatively little exposure. In that energy region the best fit background rate is 0.25+0.09−0.07 events/kt−day, significantly lower than the measured solar neutrino event rate in that energy range, which is 1.03+0.13−0.12 events/kt−day. Also using data below this threshold, down to 5 MeV, fits of the solar neutrino event direction yielded an observed flux of 2.53+0.31−0.28(stat)+0.13−0.10(syst)×106 cm−2 s−1, assuming no neutrino oscillations. This rate is consistent with matter enhanced neutrino oscillations and measurements from other experiments.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 297.3KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.99.012012
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 99
- Issue:
- 1
- Pages:
- 012012
- Publication date:
- 2019-01-28
- Acceptance date:
- 2018-12-17
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Pubs id:
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pubs:952273
- UUID:
-
uuid:629d0fd3-5606-4d10-acf4-5b1001f7ae55
- Local pid:
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pubs:952273
- Source identifiers:
-
952273
- Deposit date:
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2019-01-31
Terms of use
- Copyright holder:
- Anderson et al
- Copyright date:
- 2019
- Notes:
- Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3
- Licence:
- CC Attribution (CC BY)
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