Initial measurement of reactor antineutrino oscillation at SNO+

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Allega, A, Anderson, MR, Andringa, S, Askins, M, Auty, DJ, Bacon, A, Baker, J, Barão, F, Barros, N, Bayes, R et al (show 109 more authors) , Beier, EW, Bezerra, TS, 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, González-Reina, OI, Gooding, D, Grant, C, Grove, J, Hall, S, Hallin, AL, Hallman, D, Heintzelman, WJ, Helmer, RL, Hewitt, C, Howard, V, Hreljac, B, Hu, J, Huang, P, Hunt-Stokes, R, Hussain, SMA, Inácio, AS, Jillings, CJ, Kaluzienski, S, Kaptanoglu, T, Khan, H, Kladnik, J, Klein, JR, Kormos, LL, Krar, B, Kraus, C, Krauss, CB, Kroupová, 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, Mills, C, Milton, G, Colina, A Molina, Morris, D, Morton-Blake, I, Mubasher, M, Naugle, S, Nolan, LJ, O’Keeffe, HM, Orebi Gann, GD, 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, Smith, J, Svoboda, R, Tam, B, Tseng, J, Vázquez-Jáuregui, E, Veinot, JGC, Virtue, CJ, Ward, M, Weigand, JJ, Wilson, JR, Wilson, JD, Wright, A, Yang, S, Yeh, M, Ye, Z, Yu, S, Zhang, Y, Zuber, K and Zummo, A (2025) Initial measurement of reactor antineutrino oscillation at SNO+ The European Physical Journal C, 85 (1). 17-. ISSN 1434-6044, 1434-6052

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Abstract

AbstractThe SNO$$+$$$+$ collaboration reports its first spectral analysis of long-baseline reactor antineutrino oscillation using 114 tonne-years of data. Fitting the neutrino oscillation probability to the observed energy spectrum yields constraints on the neutrino mass-squared difference $$\Delta m^2_{21}$$$\Delta m_{21}^2$. In the ranges allowed by previous measurements, the best-fit $$\Delta m^2_{21}$$$\Delta m_{21}^2$ is ($$8.85^{+1.10}_{-1.33}$$$8.{85}_{-1.33}^{+1.10}$) $$\times $$$\times$$$10^{-5}$$${10}^{-5}$$$\hbox {eV}^2$$${\text{eV}}^2$. This measurement is continuing in the next phases of SNO+ and is expected to surpass the present global precision on $$\Delta m^2_{21}$$$\Delta m_{21}^2$ with about three years of data.

Item Type:	Article
Uncontrolled Keywords:	5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	03 Feb 2025 09:44
Last Modified:	23 May 2026 09:42
DOI:	10.1140/epjc/s10052-024-13687-5
Open Access URL:	https://link.springer.com/article/10.1140/epjc/s10...
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3190077
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