Nuclear matrix elements for the 
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 decay of 
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Fang, Dufei; Faessler, Amand

doi:10.1103/physrevc.103.045501

Cited by 7 publications

(1 citation statement)

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“…The branching ratio of the decay to the low-lying excited states of the daughter nucleus also needs to be taken into account. Even though this process is strongly quenched by the phase-space factor in the standard mechanism, it could contribute significantly to the NME in the non-standard mechanism [405].…”

Section: Discussionmentioning

confidence: 99%

Beyond-mean-field approaches for nuclear neutrinoless double beta decay in the standard mechanism

Yao,

Meng,

Niu

et al. 2021

Preprint

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Nuclear weak decays provide important probes to fundamental symmetries in nature. A precise description of these processes in atomic nuclei requires comprehensive knowledge on both the strong and weak interactions in the nuclear medium and on the dynamics of quantum many-body systems. In particular, an observation of the hypothetical double beta decay without emission of neutrinos (0νββ) would unambiguously demonstrate the Majorana nature of neutrinos and the existence of the lepton-number-violation process. It would also provide unique information on the ordering and absolute scale of neutrino masses. The next-generation tonne-scale experiments with sensitivity up to 10 28 years after a few years of running will probably provide a definite answer to these fundamental questions based on our current knowledge on the nuclear matrix element (NME), the precise determination of which is a challenge to nuclear theory. Beyond-mean-field approaches have been frequently adapted for the studies of nuclear structure and decay throughout nuclear chart for several decades. In this review, we summarize the status of beyond-mean-field calculations of the NMEs of 0νββ decay assuming the standard mechanism of an exchange of light Majorana neutrinos. The challenges and future prospects in the extension and application of beyond-mean-field approaches for 0νββ decay are discussed. Contents

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Section: Discussionmentioning

confidence: 99%