Towards a parameter-free calculation of the nuclear matrix element for the neutrinoless double-beta decay
by
DrCoraggio Luigi(INFN-NA)
→
Europe/Rome
0M03 (Dip. di Fisica di Napoli)
0M03
Dip. di Fisica di Napoli
Description
I will report about the calculation of Gamow-Teller and double-beta decay
properties for nuclei around 132Sn within the framework of the realistic
shell model.
The effective shell-model hamiltonian and Gamow-Teller transition
operator are derived by way of many-body perturbation theory, without
resorting to empirical effective quenching factors for the g_A coupling
constant.
The results are then compared with the available experimental data, in
order to establish the reliability of our approach.
This is a mandatory step, before we apply the same methodology, in
forthcoming studies, to the calculation of the neutrinoless
double-beta decay nuclear matrix element for nuclei that are
currently considered among the best candidates for the detection of this
process in experiments, such as CUORE, currently running at INFN National
Laboratory at Gran Sasso.