Neutrinoless Double-Beta Decay and Realistic Shell Model

Abstract

We report on the calculation of the neutrinoless double-beta decay nuclear matrix element for 76Ge within the framework of the realistic shell model. The effective shell-model Hamiltonian and the two-body transition operator describing the decay are derived by way of many-body perturbation theory. Particular attention is focused on the role played by the so-called Pauli blocking effect in the derivation of the effective operator.

Comments: Contribution to the proceedings of the IV International Conference on Nuclear Structure and Dynamics NSD2019 (Venice, Italy, 13-17 May 2019) To be published in a volume of EPJ Web of Conferences