Speaker
Dr
Luigi Coraggio
(INFN-NA)
Description
We report on the calculation of double-beta decay properties for nuclei around 132Sn within the framework of the realistic shell model. The effective shell-model Hamiltonian and transition operators are derived by way of many-body perturbation theory [1,2], without resorting to empirical effective quenching factors for the transition operators. We present the results for Gamow-Teller and two-teutrino double-beta decays, comparing them with the available experimental data [3]. This is crucial in order to establish the reliability of our approach to tackle the challenging neutrinoless double-beta decay problem.
[1] L. Coraggio, A. Covello, A. Gargano, N. Itaco, and T. T. S. Kuo, Ann. Phys. 327, 2125 (2012).
[2] K. Suzuki and R. Okamoto, Prog. Theor. Phys. 93, 905 (1995).
[3] L. Coraggio, L. De Angelis, T. Fukui, A. Gargano, N. Itaco, Phys. Rev. C 95, 064324 (2017).
Primary author
Dr
Luigi Coraggio
(INFN-NA)
Co-authors
Angelina Gargano
(NA)
Dr
Luca De Angelis
(INFN-NA)
Nunzio Itaco
(NA)
Tokuro Fukui
(NA)
