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

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Allega, A, Anderson, MR, Andringa, S, Askins, M, Asner, DM, Auty, DJ, Bacon, A, Barao, F, Barros, N, Bayes, R et al (show 100 more authors) , Beier, EW, Bialek, A, Biller, SD, Blucher, E, Caden, E, Callaghan, EJ, Chen, M, Cheng, S, Cleveland, B, Cookman, D, Corning, J, Cox, MA, Dehghani, R, Deloye, J, Depatie, MM, Di Lodovico, F, Dima, C, Dittmer, J, Dixon, KH, Esmaeilian, MS, Falk, E, Fatemighomi, N, Ford, R, Gaur, A, Gonzalez-Reina, OI, Gooding, D, Grant, C, Grove, J, Hall, S, Hallin, AL, Hallman, D, Heintzelman, WJ, Helmer, RL, Hewitt, C, Hreljac, B, Hu, J, Huang, P, Hunt-Stokes, R, Hussain, SMA, Inacio, AS, Jillings, CJ, Kaluzienski, S, Kaptanoglu, T, Kladnik, J, Klein, JR, Kormos, LL, Krar, B, Kraus, C, Krauss, CB, Kroupova, T, Lake, C, Lebanowski, L, Lefebvre, C, Lozza, V, Luo, M, Maio, A, Manecki, S, Maneira, J, Martin, RD, McCauley, N ORCID: 0000-0002-5982-5125, McDonald, AB, Milton, G, Morris, D, Mubasher, M, Naugle, S, Nolan, LJ, O'Keeffe, HM, Gann, GD Orebi, Page, J, Paleshi, K, Parker, W, Paton, J, Peeters, SJM, Pickard, L, Quenallata, B, Ravi, P, Reichold, A, Riccetto, S, Rose, J ORCID: 0000-0002-3388-8136, Rosero, R, Semenec, I, Simms, J, Skensved, P, Smiley, M, Svoboda, R, Tam, B, Tseng, J, Vazquez-Jauregui, E, Virtue, CJ, Ward, M, Wilson, JR, Wilson, JD, Wright, A, Yang, S, Yeh, M, Ye, Z, Yu, S, Zhang, Y, Zuber, K and Zummo, A (2024) Measurement of the ⁸B solar neutrino flux using the full SNO plus water phase dataset PHYSICAL REVIEW D, 110 (12). 122003-. ISSN 2470-0010, 2470-0029

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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.

Item Type:	Article
Uncontrolled Keywords:	5107 Particle and High Energy Physics, 4902 Mathematical Physics, 49 Mathematical Sciences, 51 Physical Sciences, 5101 Astronomical Sciences
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	06 Jan 2025 09:54
Last Modified:	23 May 2026 09:38
DOI:	10.1103/PhysRevD.110.122003
Open Access URL:	https://journals.aps.org/prd/abstract/10.1103/Phys...
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3189512
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