2010/01/31 by A. Escuderos, Alberto Escuderos, Amand Faessler +3 · 34 citations
Physics and Astronomy · #Angular momentum #Atomic physics #Boson #Double beta decay #Interacting boson model #Neutrino #Neutrino Physics Research #Neutron #Nuclear physics #Nuclear physics research studies #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Quasiparticle #Random phase approximation #Superconductivity #nucl-th
paper · pdf · doi:10.1088/0954-3899/37/12/125108
published in Journal of Physics G Nuclear and Particle Physics 37(12), 125108 (IOP Publishing) · 14 pages, 8 figures, extensively revised to discuss the effect of different seniorities, 1 figure and 2 tables added
arxiv created 2010/06/07 · openalex publication_date 2010/11/12 · arxiv updated 2010/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The methods used till now to calculate the neutrinoless double beta decay matrix elements are: the Quasiparticle Random Phase Approximation (QRPA), the Shell Model (SM), the angular momentum projected Hartee-Fock-Bogoliubov approach (HFB) and the Interacting Boson Model (IBM). The different approaches are compared specifically concerning the the angular momenta and parities of the neutron pairs, which are changed into two protons by the 0νββ decay. The QRPA and SM involve about the same angular momentum and parity neutron pairs, while the HFB is restricted to 0+, 2+, 4+, ..., and IBM to 0+ and 2+ nucleon pairs. The differences in the seniority contributions for the QRPA and the SM are discussed.