Event-by-Event Direction Reconstruction of Solar Neutrinos in a High Light-Yield Liquid Scintillator
Creators: name: Allega, A.
name: Anderson, M. R.
name: Andringa, S.
name: Antunes, J.
name: Askins, M.
name: Auty, D. J.
name: Bacon, A.
name: Baker, J.
name: Barros, N.
name: Barão, F.
name: Bayes, R.
name: Beier, E. W.
name: Bezerra, T. S.
name: Bialek, A.
name: Biller, S. D.
name: Blucher, E.
name: Caden, E.
name: Callaghan, E. J.
name: Chen, M.
name: Cheng, S.
name: Cleveland, B.
name: Cookman, D.
name: Corning, J.
name: Cox, M. A.
name: Dehghani, R.
name: Deloye, J.
name: Depatie, M. M.
name: Di Lodovico, F.
name: Dittmer, J.
name: Dixon, K. H.
name: Falk, E.
name: Fatemighomi, N.
name: Ford, R.
name: Gaur, A.
name: Ganzálaz-Reina, O. I.
name: Gooding, D.
name: Grant, C.
name: Grove, J.
name: Hall, S.
name: Hallin, A. L.
name: Heintzelman, W. J.
name: Helmer, R. L.
name: Hewitt, C.
name: Hreljac, B.
name: Howard, V.
name: Hu, J.
name: Hunt-Stokes, R.
name: Hussain, S. M. A.
name: Inácio, A. S.
name: Jillings, C. J.
name: Kaluzienski, S.
name: Kaptanoglu, T.
name: Khaghani, P.
name: Khan, H.
name: Klein, J. R.
name: Kormos, L. L.
name: Krar, B.
name: Kraus, C.
name: Krauss, C. B.
name: Kroupová, T.
name: Lake, C.
name: Lebanowski, L.
name: Lee, J.
name: Lefebvra, C.
name: Lin, Y. H.
name: Lozza, V.
name: Luo, M.
name: Maio, A.
name: Manecki, S.
name: Maneira, J.
name: Martin, R. D.
name: McCauley, N.
name: McDonald, A. B.
name: Mills, C.
name: Milton, G.
name: Morton-Blake, I.
name: Mubasher, M.
name: Colina, A. Molina
name: Morris, D.
name: Naugle, S.
name: Nolan, L. J.
name: O'Keeffe, H. M.
name: Gann, G. D. Orebi
name: Page, J.
name: Paleshi, K.
name: Parker, W.
name: Paton, J.
name: Peeters, S. J. M.
name: Pickard, L.
name: Ravi, P.
name: Reichold, A.
name: Riccetto, S.
name: Rigan, M.
name: Rose, J.
name: Rosero, R.
name: Rumleskie, J.
name: Semenec, I.
name: Skensvard, P.
name: Smiley, M.
name: Smith, J.
name: Svoboda, R.
name: Tam, B.
name: Tseng, J.
name: Valder, S.
name: Vázquez-Jáuregui, E.
name: Virtue, C. J.
name: Wang, J.
name: Ward, M.
name: Wilson, J. R.
name: Wilson, J. D.
name: Wright, A.
name: Yanez, J. P.
name: Yang, S.
name: Yeh, M.
name: Ye, Z.
name: Yu, S.
name: Zhang, Y.
name: Zuber, K.
name: Zummo, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The direction of individual $^8$B 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.
description: 6 pages, 6 figures. Accepted manuscript by PRD