Arthur B. McDonald Created 2026-10-18 Updated 2026-11-05
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Arthur B. McDonald led work at the Sudbury Neutrino Observatory, which distinguished a change of neutrino flavor from a low total solar neutrino flux. Reactions on deuterium provided different flavor sensitivities: the charged-current channel selected electron neutrinos, while the neutral-current channel measured all active neutrino flavors. Their comparison revealed a non-electron component while the total flux agreed with solar expectations. The detector thereby tested the solar neutrino problem without requiring all missing electron-flavor events to mean missing solar production.[ref]
A physicist working in experimental particle astrophysics.[ref]
Figure 1.
Portrait of Arthur B. McDonald
. Holger Motzkau, 2015, Wikipedia/Wikimedia Commons; photograph at the Royal Swedish Academy of Sciences press conference, 7 December 2015. Creative Commons Attribution-Share Alike 3.0 Unported., via Wikimedia Commons. Source.
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