Speaker
Mrs
jessica ilaria bellone
(INFN - LNS (for the NUMEN collaboration))
Description
Neutrinoless double beta decay ($0\nu\beta\beta$) represents one of the key cases to probe Physics beyond the Standard Model. From the half – life of nuclei which may undergo double beta decay it
would be possible to extract the neutrino effective mass, if the nuclear matrix elements involved in the process are known with sufficient accuracy. To access information on the latter quantities, it has been proposed to exploit the analogies between double beta decay processes and double charge exchange (DCEX) nuclear reactions, looking in particular at the conditions where the corresponding cross section can be factorized into nuclear reaction and nuclear structure terms. DCEX reactions can be treated as a convolution of two correlated or uncorrelated single charge exchange (SCEX) processes, resembling $0\nu\beta\beta$ and $2\nu\beta\beta$, respectively. Thus it is important to model first SCEX processes, to get a deeper insight into the possibility to factorize the corresponding cross section, so one can gain a better understanding on DCEX cross section factorization.
In this contribution, we will mainly discuss DCEX reactions in terms of the convolution of two uncorrelated SCEX processes, which allows one to extract information on $2\nu\beta\beta$ nuclear matrix elements,
possibly making a comparison to the results obtained from $2\nu\beta\beta$ events. These theoretical investigations are performed in close synergy with the experimental activity running at INFN-LNS within the NUMEN project.
Primary author
Mrs
jessica ilaria bellone
(INFN - LNS (for the NUMEN collaboration))
Co-authors
Prof.
horst lenske
(Institut für Theoretische Physik, Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany (for the NUMEN collaboration))
Dr
maria colonna
(INFN - LNS (for the NUMEN collaboration))
