Measurement of the B 8 solar neutrino flux using the full SNO+ water phase dataset

A. Allega; M. R. Anderson; S. Andringa; M. Askins; D. M. Asner; D. J. Auty; A. Bacon; F. Barão; N. Barros; SNO+ Collaboration

doi:10.1103/PhysRevD.110.122003

Measurement of the B 8 solar neutrino flux using the full SNO+ water phase dataset

A. Allega
, M. R. Anderson
, S. Andringa
, M. Askins
, D. M. Asner
, D. J. Auty
, A. Bacon
, F. Barão
, N. Barros
, SNO+ Collaboration

Queen's University Belfast
LIP—Laboratório de Instrumentaçáo e Física Experimental de Partículas
Lawrence Berkeley National Laboratory
Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973-500, USA
University of Alberta
University of Pennsylvania
Universidade de Lisboa
Universidade de Coimbra
Laurentian University
University of Oxford
The University of Chicago
King’s College London
University of Liverpool
SNOLAB
Boston University
University of Sussex
University of California
Shandong University

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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Abstract

The SNO+ detector operated initially as a water Cherenkov detector. The implementation of a sealed cover gas system midway through water data taking resulted in a significant reduction in the activity of Rn222 daughters in the detector and allowed the lowest background to the solar electron scattering signal above 5 MeV achieved to date. This paper reports an updated SNO+ water phase B8 solar neutrino analysis with a total livetime of 282.4 days and an analysis threshold of 3.5 MeV. The B8 solar neutrino flux is found to be (2.32-0.17+0.18(stat)-0.05+0.07(syst))×106 cm-2 s-1 assuming no neutrino oscillations, or (5.36-0.39+0.41(stat)-0.16+0.17(syst))×106 cm-2 s-1 assuming standard neutrino oscillation parameters, in good agreement with both previous measurements and standard solar model calculations. The electron recoil spectrum is presented above 3.5 MeV.

Original language	English
Article number	122003
Number of pages	9
Journal	Physical Review D
Volume	110
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.110.122003
Publication status	Published - 16 Dec 2024

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@article{d0b1c621c9804d3ea064e3c293b4ee8b,

title = "Measurement of the B 8 solar neutrino flux using the full SNO+ water phase dataset",

abstract = "The SNO+ detector operated initially as a water Cherenkov detector. The implementation of a sealed cover gas system midway through water data taking resulted in a significant reduction in the activity of Rn222 daughters in the detector and allowed the lowest background to the solar electron scattering signal above 5 MeV achieved to date. This paper reports an updated SNO+ water phase B8 solar neutrino analysis with a total livetime of 282.4 days and an analysis threshold of 3.5 MeV. The B8 solar neutrino flux is found to be (2.32-0.17+0.18(stat)-0.05+0.07(syst))×106 cm-2 s-1 assuming no neutrino oscillations, or (5.36-0.39+0.41(stat)-0.16+0.17(syst))×106 cm-2 s-1 assuming standard neutrino oscillation parameters, in good agreement with both previous measurements and standard solar model calculations. The electron recoil spectrum is presented above 3.5 MeV.",

author = "A. Allega and M. R. Anderson and S. Andringa and M. Askins and D. M. Asner and D. J. Auty and A. Bacon and F. Bar{\~a}o and N. Barros and \{SNO+ Collaboration\} and R. Bayes and E. W. Beier and A. Bialek and S. D. Biller and E. Blucher and E. Caden and E. J. Callaghan and M. Chen and S. Cheng and B. Cleveland and D. Cookman and J. Corning and M. A. Cox and R. Dehghani and J. Deloye and M. M. Depatie and \{Di Lodovico\}, F. and K. H. Dixon and R. Ford and C. Grant and S. Hall and J. Hu and S. M. A. Hussain and J. R. Klein and R. D. Martin and D. Morris and L. J. Nolan and J. Page and J. Paton and S. J. M. Peeters and L. Pickard and J. Rose and J. Tseng and M. Ward and J. R. Wilson and J. R. Wilson and A. Wright and S. Yang and Z. Ye and S. Yu and Y. Zhang",

note = "Publisher Copyright: {\textcopyright} 2024 authors. Published by the American Physical Society.",

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month = dec,

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doi = "10.1103/PhysRevD.110.122003",

language = "English",

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T1 - Measurement of the B 8 solar neutrino flux using the full SNO+ water phase dataset

AU - Allega, A.

AU - Anderson, M. R.

AU - Andringa, S.

AU - Askins, M.

AU - Asner, D. M.

AU - Auty, D. J.

AU - Bacon, A.

AU - Barão, F.

AU - Barros, N.

AU - SNO+ Collaboration

AU - Bayes, R.

AU - Beier, E. W.

AU - Bialek, A.

AU - Biller, S. D.

AU - Blucher, E.

AU - Caden, E.

AU - Callaghan, E. J.

AU - Chen, M.

AU - Cheng, S.

AU - Cleveland, B.

AU - Cookman, D.

AU - Corning, J.

AU - Cox, M. A.

AU - Dehghani, R.

AU - Deloye, J.

AU - Depatie, M. M.

AU - Di Lodovico, F.

AU - Dixon, K. H.

AU - Ford, R.

AU - Grant, C.

AU - Hall, S.

AU - Hu, J.

AU - Hussain, S. M. A.

AU - Klein, J. R.

AU - Martin, R. D.

AU - Morris, D.

AU - Nolan, L. J.

AU - Page, J.

AU - Paton, J.

AU - Peeters, S. J. M.

AU - Pickard, L.

AU - Rose, J.

AU - Tseng, J.

AU - Ward, M.

AU - Wilson, J. R.

AU - Wright, A.

AU - Yang, S.

AU - Ye, Z.

AU - Yu, S.

AU - Zhang, Y.

PY - 2024/12/16

Y1 - 2024/12/16

N2 - The SNO+ detector operated initially as a water Cherenkov detector. The implementation of a sealed cover gas system midway through water data taking resulted in a significant reduction in the activity of Rn222 daughters in the detector and allowed the lowest background to the solar electron scattering signal above 5 MeV achieved to date. This paper reports an updated SNO+ water phase B8 solar neutrino analysis with a total livetime of 282.4 days and an analysis threshold of 3.5 MeV. The B8 solar neutrino flux is found to be (2.32-0.17+0.18(stat)-0.05+0.07(syst))×106 cm-2 s-1 assuming no neutrino oscillations, or (5.36-0.39+0.41(stat)-0.16+0.17(syst))×106 cm-2 s-1 assuming standard neutrino oscillation parameters, in good agreement with both previous measurements and standard solar model calculations. The electron recoil spectrum is presented above 3.5 MeV.

AB - The SNO+ detector operated initially as a water Cherenkov detector. The implementation of a sealed cover gas system midway through water data taking resulted in a significant reduction in the activity of Rn222 daughters in the detector and allowed the lowest background to the solar electron scattering signal above 5 MeV achieved to date. This paper reports an updated SNO+ water phase B8 solar neutrino analysis with a total livetime of 282.4 days and an analysis threshold of 3.5 MeV. The B8 solar neutrino flux is found to be (2.32-0.17+0.18(stat)-0.05+0.07(syst))×106 cm-2 s-1 assuming no neutrino oscillations, or (5.36-0.39+0.41(stat)-0.16+0.17(syst))×106 cm-2 s-1 assuming standard neutrino oscillation parameters, in good agreement with both previous measurements and standard solar model calculations. The electron recoil spectrum is presented above 3.5 MeV.

UR - https://www.scopus.com/pages/publications/85212927712

U2 - 10.1103/PhysRevD.110.122003

DO - 10.1103/PhysRevD.110.122003

M3 - Article

SN - 2470-0029

VL - 110

JO - Physical Review D

JF - Physical Review D

IS - 12

M1 - 122003

ER -

Measurement of the B 8 solar neutrino flux using the full SNO+ water phase dataset

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