Relatore
Giovanni De Gregorio
(Istituto Nazionale di Fisica Nucleare)
Descrizione
The necessity of calculating reliable nuclear matrix elements for neutrinoless double $\beta$ decay has further stimulated the research on the mechanisms responsible for the renormalization of the $\beta$-decay operator. We tackle this point using the many-body perturbation theory to derive effective Hamiltonian and operators for nuclear shell model calculations. Here, I will present recent results obtained for medium-mass nuclei, discussing the effect of the renormalization for both allowed and forbidden $\beta$-decay transitions.
Autore principale
Giovanni De Gregorio
(Istituto Nazionale di Fisica Nucleare)
