Nuclear Matrix Elements for Neutrinoless Double-Beta Decay

Conference · Mon Mar 31 04:00:00 EDT 2025 · PoS

DOI:https://doi.org/10.22323/1.466.0011· OSTI ID:2549327

Grebe, Anthony V. ^[1]

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1. Fermilab

Neutrinoless double-beta decay ($$0\nu\beta\beta$$) is a rare hypothesised process that, if discovered, would establish that the neutrino is Majorana, that is, it is its own antiparticle. Interpretation of experimental results relies on knowledge of nuclear matrix elements, whose large model uncertainty is the limiting factor in comparing measured (bounds on) half-lives to the neutrino mass. Nuclear effective field theory and lattice QCD have the potential to compute these matrix elements with better control over uncertainties, enhancing the discovery potential of next-generation $$0\nu\beta\beta$$ experiments. This work will survey various lattice QCD double-beta decay calculations and discuss their implications.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: 89243024CSC000002
• OSTI ID: 2549327
• Report Number(s): FERMILAB-CONF-25-0106-T; arXiv:2504.00358; oai:inspirehep.net:2906562
• Conference Information: Journal Name: PoS Journal Volume: Lattice2024
• Country of Publication: United States
• Language: English