LEGEND-1000: Discovering 0νββin <sup>76</sup>Ge at the Ton Scale
ORAL
Abstract
The discovery of the lepton-number-violating neutrinoless double-beta decay (0νββ) would determine the Majorana or Dirac nature of neutrinos, indicate the origin of neutrino mass, and provide a path to leptogenesis in the early universe. LEGEND-1000, the proposed the ton-scale phase of the LEGEND program, would search for the 0νββ of 76Ge. LEGEND-1000 builds on the success of GERDA and the MAJORANA DEMONSTRATOR, which have achieved the lowest background levels and the best energy resolution in the region-of-interest in the field, and on the ongoing LEGEND-200 experiment. The LEGEND-1000 experiment's technical design, energy resolution, material selection, and background suppression techniques combine to project a background-free search for 0νββ at a half-life beyond 1028 yrs and a discovery sensitivity that covers the inverted-ordering neutrino mass scale. LEGEND-1000’s technical readiness and discovery potential will be presented.
*This work is supported by the U.S. DOE and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak SRDA; the Swiss SNF; the UK STFC; the Russian RFBR; the Canadian NSERC and CFI; the LNGS, SNOLAB, and SURF facilities.
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Publication: The LEGEND Collaboration et al. LEGEND-1000 Preconceptual Design Report. 2021. arXiv:2107.11462 [physics.ins-det]
Presenters
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Julieta Gruszko
- University of North Carolina at Chapel Hill