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Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double-$\beta$ Decay in $^{76}$Ge

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arxiv 2207.07638 v2 pith:MSPAPGXS submitted 2022-07-15 nucl-ex hep-exphysics.ins-det

I.J. Arnquist , F.T. Avignone III , A.S. Barabash , C.J. Barton , P.J. Barton , K.H. Bhimani , E. Blalock , B. Bos
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M. Busch M. Buuck T.S. Caldwell Y-D. Chan C.D. Christofferson P.-H. Chu M.L. Clark C. Cuesta J.A. Detwiler Yu. Efremenko H. Ejiri S.R. Elliott G.K. Giovanetti M.P. Green J. Gruszko I.S. Guinn V.E. Guiseppe C.R. Haufe R. Henning D. Hervas Aguilar E.W. Hoppe A. Hostiuc M.F. Kidd I. Kim R.T. Kouzes T.E. Lannen V A. Li A.M. Lopez J.M. López-Castaño E.L. Martin R.D. Martin R. Massarczyk S.J. Meijer S. Mertens T.K. Oli G. Othman L.S. Paudel W. Pettus A.W.P. Poon D.C. Radford A.L. Reine K. Rielage N.W. Ruof D.C. Schaper D. Tedeschi R.L. Varner S. Vasilyev J.F. Wilkerson C. Wiseman W. Xu C.-H. Yu B.X. Zhu
This is my paper · ORCID
classification nucl-exhep-exphysics.ins-det
keywords betademonstratorarraysdecaydetectorsdouble-enrichedmajorana
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The MAJORANA DEMONSTRATOR searched for neutrinoless double-$\beta$ decay ($0\nu\beta\beta$) of $^{76}$Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-background shield. The arrays operated with up to 40.4 kg of detectors (27.2 kg enriched to $\sim$88\% in $^{76}$Ge). From these measurements, the DEMONSTRATOR has accumulated 64.5 kg yr of enriched active exposure. With a world-leading energy resolution of 2.52 keV FWHM at the 2039 keV $Q_{\beta\beta}$ (0.12\%), we set a half-life limit of $0\nu\beta\beta$ in $^{76}$Ge at $T_{1/2}>8.3\times10^{25}$ yr (90\% C.L.). This provides a range of upper limits on $m_{\beta\beta}$ of $(113-269)$ meV (90\% C.L.), depending on the choice of nuclear matrix elements.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Neutrinoless Double-Beta Decays from Operator Mixing

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Renormalization-group mixing lets heavy-quark dimension-seven operators feed neutrinoless double-beta decay, giving some of the strongest current bounds on these new-physics operators.

  2. Search for Double Beta Decay of $^{136}$Xe to the $0^+_1$ Excited State of $^{136}$Ba with PandaX-4T

    nucl-ex 2025-02 conditional novelty 5.0 of 10

    PandaX-4T finds no double beta decay of 136Xe to the 0+1 excited state of 136Ba and sets a half-life limit of 7.5e22 years at 90% confidence.

  3. Neutrinoless double-beta decay search with the LEGEND experiment

    nucl-ex 2025-01 conditional novelty 4.0 of 10

    A first LEGEND-200 dataset combined with earlier experiments gives a 90% C.L. half-life limit of 1.9x10^26 years for 0nu betabeta decay in 76Ge, pending a better understanding of an unexpected background.

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