# EPS-HEP2021 conference

26-30 July 2021
Zoom
Europe/Berlin timezone

## The Large Enriched Germanium Experiment for Neutrinoless Double-Beta Decay

28 Jul 2021, 17:00
15m
Zoom

#### Zoom

Parallel session talk Neutrino Physics

### Speaker

Michael Willers (Technische Universität München)

### Description

The observation of neutrinoless double-beta ($0\nu\beta\beta$) decay would unequivocally demonstrate that lepton number conservation is violated and that neutrinos are Majorana particles. Such a discovery would have profound consequences for particle physics and cosmology.

The Large Enriched Germanium Experiment for Neutrinoless $\beta\beta$ Decay (LEGEND) collaboration has been formed to pursue a ton-scale $^{76}$Ge-based $0\nu\beta\beta$ decay experimental program with discovery potential at a half-life beyond $10^{28}$ years. LEGEND is building on the success of the predecessor experiments GERDA and Majorana Demonstrator which have achieved both the best energy resolution and lowest background in the field.

The first 200-kg phase (LEGEND-200) is currently under construction at the Gran Sasso underground laboratory (Laboratori Nazionale del Gran Sasso, Italy) and will be commissioned later this year. In this contribution I will present the current status of LEGEND-200 as well as the prospects of the proposed ton-scale phase LEGEND-1000.

The material in this contribution is based upon work supported by the U.S. NSF, DOE-NP, NERSCC and through the LANL & LBNL LDRD programs, and the Oak Ridge Leadership Computing Facility; the Russian RFBR, the Canadian NSERC and CFI; the German BMBF, DFG and MPG; the Italian INFN; the Polish NCN and Foundation for Polish Science; and the Swiss SNF; the Sanford Underground Research Facility, and the Laboratori Nazionali del Gran Sasso.

Collaboration / Activity LEGEND Michael Willers mwillers@ph.tum.de

### Primary author

Michael Willers (Technische Universität München)