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Neutrinoless double-$\beta$ decay and double Gamow-Teller transitions

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arxiv 2403.06455 v1 pith:ZKYFFE2G submitted 2024-03-11 nucl-th

classification nucl-th
keywords betadecaydoublecorrelationdouble-gamow-tellerlinearneutrinoless
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay and the double Gamow-Teller (DGT) transition are investigated with the state-of-the-art Relativistic Configuration-interaction Density functional theory. A strong linear correlation between the nuclear matrix elements (NMEs) of the $0\nu\beta\beta$ decay and the DGT transition is demonstrated. This linear correlation is found to originate from the similarity of the leading-order term of the $0\nu\beta\beta$-decay operator and the DGT-transition one, as revealed by expanding the $0\nu\beta\beta$-decay operator in terms of the spherical harmonics. The present results provide a strong support to constrain the $0\nu\beta\beta$-decay NMEs through the double charge-exchange reactions.

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Cited by 1 Pith paper

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  1. Benchmarking nuclear matrix elements of $0\nu\beta\beta$ decay with high-energy nuclear collisions

    nucl-th 2025-02 conditional novelty 6.0 of 10

    Simulations show that flow observables in ultra-central 150Nd+150Nd collisions have Pearson correlations up to |r|=0.93 with the 0νββ nuclear matrix element, proposing collider data as a benchmark for nuclear theory.

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