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Nuclear transition matrix elements for neutrinoless double-β decay of 76Ge isotope within PHFB approach

    https://doi.org/10.1142/S0218301319500964Cited by:2 (Source: Crossref)

    Employing projected–Hartree–Fock–Bogoliubov (PHFB) model, nuclear transition matrix elements (NTMEs) M(K) for the neutrinoless double-β decay of 76Ge isotope are calculated within mechanisms involving light as well as heavy Majorana neutrinos, and classical Majorons. By considering the spin-tensor decomposition of realistic KUO and empirical JUN45 effective two-body interactions, it is noticed that the effect due to SRC on NTMEs M(0ν) and M(0N) involving the exchange of light and heavy Majorana neutrinos, respectively, is maximally incorporated by the central part of the effective two-body interaction, which varies by a small amount with the inclusion of spin-orbit and tensor components. Presently, the model-dependent uncertainties in the average NTMEs ¯M(0ν) and ¯M(0N) turn out to be about 10% and 37%, respectively.

    PACS: 21.60.Jz, 23.20.-g, 23.40.Hc
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