Advancing the Search for Neutrinoless Double-Beta Decay with LEGEND
by
48/2-224 - Madrone
SLAC
The observation of neutrinoless double-beta decay (0νββ) would confirm the Majorana nature of neutrinos, violate lepton number conservation, and provide profound insight 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 on the legacy of the MAJORANA DEMONSTRATOR and GERDA, combining their technologies to achieve world-leading sensitivity with enriched High-Purity Germanium (HPGe) detectors. LEGEND-200, currently in operation at LNGS, has recently delivered first results with strong background suppression using a combination of pulse shape discrimination (PSD) and an active liquid argon veto system. The experiment has reached a new half-life lower limit and serves as a testbed for upcoming technologies planned for LEGEND-1000, the next phase of the program. In this seminar, I will present the current status and performance of LEGEND-200, highlighting detector design and calibration methods. I will also outline the experimental roadmap toward LEGEND-1000, a tonne-scale experiment targeting a discovery sensitivity beyond 10²⁸ years.
https://stanford.zoom.us/j/98973156241?pwd=cEU5RFdlVXoyc0JTeTlDMkozKzQ5UT09