The SuperNEMO Demonstrator measures double beta decay modes, revealing insights into neutrino behavior and characteristics.
The SuperNEMO Demonstrator is a unique instrument for studying various modes of double beta decay. Its distinctiveness lies in the use of a tracking detector, which enables significant background suppression not only in the region of interest (ROI) for neutrinoless double beta decay (0νββ), but also within the continuum of two-neutrino double beta decay. The detector provides access to single-electron energies as well as to the angular correlation between the two electrons emitted in the decay. SuperNEMO aims to achieve a competitive background index of 2×10⁻⁴ counts·keV⁻¹·kg⁻¹·yr⁻¹ in the 0νββ ROI, corresponding to a background-free sensitivity for an exposure of 17.5 kg·yr. This article briefly discusses several chosen decay modes accessible to the SuperNEMO Demonstrator.
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M. Macko (2026) studied this question.
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