Search for Double Beta Plus Decays with NuDoubt++

26 Aug 2025, 16:20
20m
North Hall #1

North Hall #1

Oral Neutrino Physics and Astrophysics Neutrino Physics and Astrophysics

Speaker

Stefan Schoppmann (JGU Mainz)

Description

Double beta plus decay is a rare nuclear disintegration process. Difficulties in its measurement arise from suppressed decay probabilities, experimentally challenging decay signatures and low natural abundances of suitable candidate nuclei. In this presentation, we propose NuDoubt++, a new detector concept to overcome these challenges. It is based on the first-time combination of hybrid and opaque scintillation detector technology paired with novel light read-out techniques. This approach is particularly suitable detecting positron (beta plus) signatures. We expect to discover two-neutrino double beta plus decay modes within 1 tonne-week exposure and are able to probe neutrinoless double beta plus decays at several orders of magnitude improved significance compared to current experimental limits.

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