Event-by-event direction reconstruction of solar neutrinos in a high light-yield liquid scintillator

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Allega, A, Anderson, MR, Andringa, S, Antunes, J, Askins, M, Auty, DJ, Bacon, A, Baker, J, Barros, N, Barao, F et al (show 109 more authors) , Bayes, R, 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, Dittmer, J, Dixon, KH, Falk, E, Fatemighomi, N, Ford, R, Gaur, A, Gonzalez-Reina, OI, Gooding, D, Grant, C, Grove, J, Hall, S, Hallin, AL, Heintzelman, WJ, Helmer, RL, Hewitt, C, Hreljac, B, Howard, V, Hu, J, Hunt-Stokes, R, Hussain, SMA, Inacio, AS, Jillings, CJ, Kaluzienski, S, Kaptanoglu, T, Khaghani, P, Khan, H, Klein, JR, Kormos, LL, Krar, B, Kraus, C, Krauss, CB, Kroupova, T, Lake, C, Lebanowski, L, Lee, J, Lefebvre, C, Lin, YH, 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, Morton-Blake, I, Mubasher, M, Colina, A Molina, Morris, D, Naugle, S, Nolan, LJ, O'Keeffe, HM, Gann, GD Orebi, Page, J, Paleshi, K, Parker, W, Paton, J, Peeters, SJM, Pickard, L, Ravi, P, Reichold, A, Riccetto, S, Rigan, M, Rose, J ORCID: 0000-0002-3388-8136, Rosero, R, Rumleskie, J, Semenec, I, Skensved, P, Smiley, M, Smith, J, Svoboda, R, Tam, B, Tseng, J, Valder, S, Vazquez-Jauregui, E, Virtue, CJ, Wang, J, Ward, M, Wilson, JR, Wilson, JD, Wright, A, Yanez, JP, Yang, S, Yeh, M, Ye, Z, Yu, S, Zhang, Y, Zuber, K and Zummo, A (2024) Event-by-event direction reconstruction of solar neutrinos in a high light-yield liquid scintillator PHYSICAL REVIEW D, 109 (7). 072002-. ISSN 2470-0010, 2470-0029

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Abstract

The direction of individual B8 solar neutrinos has been reconstructed using the SNO+ liquid scintillator detector. Prompt, directional Cherenkov light was separated from the slower, isotropic scintillation light using time information, and a maximum likelihood method was used to reconstruct the direction of individual scattered electrons. A clear directional signal was observed, correlated with the solar angle. The observation was aided by a period of low primary fluor concentration that resulted in a slower scintillator decay time. This is the first time that event-by-event direction reconstruction in high light-yield liquid scintillator has been demonstrated in a large-scale detector.

Item Type:	Article
Uncontrolled Keywords:	5106 Nuclear and Plasma Physics, 51 Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	12 Aug 2024 14:39
Last Modified:	23 May 2026 08:40
DOI:	10.1103/PhysRevD.109.072002
Open Access URL:	https://doi.org/10.1103/PhysRevD.109.072002
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3183582
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