Neutrinoless double-beta decay search with LEGEND-200*

The Large Enriched Germanium Experiment for Neutrinoless double-beta Decay (LEGEND) project will search for the lepton-number-violating neutrinoless double-beta (0νββ) decay of ⁷⁶Ge. This discovery would have far-reaching implications in cosmology and particle physics, such as establishing the Majorana nature of the neutrino and constraining the neutrino mass scale in the picture of light-neutrino exchange. Using High Purity Germanium (HPGe) detectors enriched in the isotope ⁷⁶Ge and directly immersed into liquid argon (LAr), LEGEND exploits the combination of superior energy resolution of germanium detectors and scintillating properties of LAr crucial for background reduction. The first phase, LEGEND-200, comprises 200 kg of ⁷⁶Ge-enriched detectors and is presently under construction at LNGS in Italy. It will serve as a testbed for technology improvements and as an intermediate step to the tonne-scale LEGEND-1000 project. LEGEND-200 aims to reach a half-life sensitivity of 10²⁷ years, an improvement of one order of magnitude on the latest limits, with a factor of 2.5 background index reduction. This talk presents the physics reach of LEGEND-200, new technologies deployed, and reports on the status of the ongoing commissioning.