Final published version, 302 KB, PDF document
Available under license: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Licence: CC BY: Creative Commons Attribution 4.0 International License
Research output: Contribution to Journal/Magazine › Journal article › peer-review
| Article number | 012012 |
|---|---|
| <mark>Journal publication date</mark> | 28/01/2019 |
| <mark>Journal</mark> | Physical Review D |
| Issue number | 1 |
| Volume | 99 |
| Number of pages | 7 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
A measurement of the B-8 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 tit background rate is 0.25(-0.07)(+0.09) events/kt-day, significantly lower than the measured solar neutrino event rate in that energy range, which is 1.03(-0.12)(+0.13) events/kt-day. Also using data below this threshold, don to 5 MeV, fits of the solar neutrino event direction yielded an observed flux of 2.51(-0.28)(+0.31)(stat)(-0.10)(+0.13)(syst) x 10(6) cm(-2) s(-1), assuming no neutrino oscillations. This rate is consistent with matter enhanced neutrino oscillations and measurements from other experiments.