Speaker
Description
The search for the detection of neutrinoless double-beta (0νββ) decay is one of the main experimental challenges in particle and nuclear physics. Its measurement has the potential to demonstrate that neutrinos are their own antiparticles, reveal matter-antimatter asymmetry, and provide insights into absolute neutrino mass. Despite extensive experimental efforts using various isotopes, 0νββ decay remains unobserved, with significant uncertainty in the theoretical Nuclear Matrix Elements (NME) that are essential for interpreting potential signals. In this presentation, I will outline a promising experimental approach to address this challenge by leveraging electromagnetic transitions—specifically, double-magnetic dipole (gamma-gamma-M1M1) decays from double isobaric analog states (DIAS). ). In order to effectively detect these transitions, we propose to employ LaBr3 detectors. Indeed, their excellent time resolution is crucial to discriminate the gamma-gamma decays from competing processes. This innovative method offers a pathway to constrain NMEs, advancing our understanding of 0νββ decay mechanisms and its implications for fundamental physics [1,2]
- B. Romeo et al., Phys. Lett. B 827, 136965 (2022).
- B. Romeo et al., Phys. Lett. B 860, 139186 (2025).
