Analysis of the Intermediate-State Contributions to Neutrinoless Double β− Decays
A comprehensive analysis of the structure of the nuclear matrix elements (NMEs) of neutrinoless double beta-minus (0νβ-β-) decays to the 0+ ground and first excited states is performed in terms of the contributing multipole states in the intermediate nuclei of 0νβ-β- transitions. We concentrate on t...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2016/4714829 |
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| Summary: | A comprehensive analysis of the structure of the nuclear matrix elements (NMEs) of neutrinoless double beta-minus (0νβ-β-) decays to the 0+ ground and first excited states is performed in terms of the contributing multipole states in the intermediate nuclei of 0νβ-β- transitions. We concentrate on the transitions mediated by the light (l-NMEs) Majorana neutrinos. As nuclear model we use the proton-neutron quasiparticle random-phase approximation (pnQRPA) with a realistic two-nucleon interaction based on the Bonn one-boson-exchange G matrix. In the computations we include the appropriate short-range correlations, nucleon form factors, and higher-order nucleonic weak currents and restore the isospin symmetry by the isoscalar-isovector decomposition of the particle-particle proton-neutron interaction parameter gpp. |
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| ISSN: | 1687-7357 1687-7365 |