The observation of neutrinoless double-beta decay (0νββ) would confirm the Majorana nature of neutrinos, violate lepton number conservation, and offer deep insights into the origin of neutrino mass and the matter-antimatter asymmetry of the universe. The LEGEND (Large Enriched Germanium Experiment for Neutrinoless ββ Decay) program builds upon the success of its predecessors, the MAJORANA...
SNO+ is an operational multi-purpose neutrino detector located 2km underground at SNOLAB in Sudbury, Ontario, Canada. 780 tonnes of linear alkylbenzene-based liquid scintillator are observed by ~9300 photomultiplier tubes (PMTs) mounted outside the spherical scintillator volume. SNO+ has a broad physics program which will include a search for the neutrinoless double beta decay of...
We developed machine learning methods for background rejection in the 0νββ decay search of the KamLAND-Zen experiment. Using CNN-based KamNet and Transformer-based ViViT for particle identification from PMT hit maps, we compared the rejection efficiency of both models. The results showed equivalent performance with high correlation (0.85-0.95) in output scores. Performance improvement through...
"The observation of neutrinoless double-beta decay (0νββ) would demonstrate that the
Neutrino is Majorana in nature (its own antiparticle),establish the violation of lepton number conservation, and provide insight into the absolute neutrino mass scale. The NEXT experiment (Neutrino Experiment with a Xenon TPC) is searching for 0νββ decay in high-pressure xenon gas at the Laboratorio...
