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  • Letter
  • Open Access

Testing the inverted neutrino mass ordering with neutrinoless double-β decay

Matteo Agostini1,*, Giovanni Benato2,†, Jason A. Detwiler3,‡, Javier Menéndez4,§, and Francesco Vissani2,5,∥

  • 1Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
  • 2INFN, Laboratori Nazionali del Gran Sasso, 67100 Assergi, L'Aquila, Italy
  • 3Center for Experimental Nuclear Physics and Astrophysics and Department of Physics, University of Washington, Seattle, Washington 98115, USA
  • 4Department of Quantum Physics and Astrophysics and Institute of Cosmos Sciences, University of Barcelona, 08028 Barcelona, Spain
  • 5Gran Sasso Science Institute, 67100 L'Aquila, Italy

  • *matteo.agostini@ucl.ac.uk
  • †giovanni.benato@lngs.infn.it
  • ‡jasondet@uw.edu
  • §menendez@fqa.ub.edu
  • ∥vissani@lngs.infn.it

Phys. Rev. C 104, L042501 – Published 11 October, 2021

DOI: https://doi.org/10.1103/PhysRevC.104.L042501

Abstract

We quantify the extent to which future experiments will test the existence of neutrinoless double-β decay mediated by light neutrinos with inverted-ordered masses. While it remains difficult to compare measurements performed with different isotopes, we find that future searches will fully test the inverted-ordering scenario, as a global, multi-isotope endeavor. They will also test other possible mechanisms driving the decay, including a large uncharted region of the allowed parameter space assuming that neutrino masses follow the normal ordering.

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