Περίληψη:
The NUMEN project aims at accessing experimentally driven information on
Nuclear Matrix Elements (NME) involved in the half-life of the
neutrinoless double beta decay (0v beta beta). In this view measurements
of Heavy Ion (HI) induced Double Charge Exchange (DCE) reaction cross
sections are performed with high-accuracy. In particular, the
(O-18,(18)Nc) and ((20)Nc, O-20) reactions are used as tools for
beta(+)beta(+) and beta(-)beta(-) decays, respectively. In the
experiments, performed at INFN - Laboratory Nazionali del Sud (LNS) in
Catania, the beams are accelerated by the Superconducting Cyclotron (CS)
and the reaction ejectiles are detected the MAGNEX magnetic
spectrometer. The measured cross sections are challengingly low (a few
nb), being the total reaction cross section much larger (a few b), thus
a high sensitivity and a large rejection capability are demanded to the
experimental set-up. This limits the present exploration to few selected
isotopes of interest in the context of typically low-yield experimental
runs. A major upgrade of the LNS facility is under way in order to
increase the experimental dataset of more than two orders of magnitude,
still preserving the high sensitivity of the present set-up. When
accomplished this effort will make the INFN-LNS as the state-of-the-art
research infrastructure for the systematic study of all the cases of
interest for 0v beta beta. In this view, frontiers technologies are
going to be adopted for the accelerator and the detection systems. In
parallel, advanced theoretical models are being developed in order to
extract the nuclear structure information from the measured cross
sections
Συγγραφείς:
Cappuzzello, F.
Agodi, C.
Acosta, L.
Altana, C. and
Amador-Valenzuela, P.
Auerbach, N.
Barea, J.
Bellone, J. and
Bijker, R.
Bonanno, D.
Borello-Lewin, T.
Boztosun, I and
Branchina, V
Brasolin, S.
Brischetto, G.
Brunasso, O. and
Burrello, S.
Calabrese, S.
Calabretta, L.
Calvo, D. and
Capirossi, V
Carbone, D.
Cavallaro, M.
Charon Garcia, L. E.
and Chavez Lomeli, E. R.
Chen, R.
Ciraldo, I
Colonna, M. and
D'Agostino, G.
Delaunay, F.
Deshmukh, N.
Djapo, H.
De
Geronimo, G.
De Los Rios, K.
Ferraresi, C.
Ferreira, J. L.
and Ferretti, J.
Finocchiaro, P.
Firat, S.
Fisichella, M.
and Foti, A.
Gallo, G.
Garcia-Tecocoatzi, H.
Hacisalihoglu,
A.
Huerta-Hernandez, A.
Kotila, Z. J.
Kucuk, Y.
Iazzi,
F.
Lanzalone, G.
Lay, J. A.
La Fauci, L.
La Via, F. and
Lenske, H.
Linares, R.
Lo Presti, D.
Lubian, J.
Ma, J.
and Marin-Lambarri, D.
Mas Ruiz, J.
Medina, N. H.
Mendes, D.
R.
Mereu, P.
Moralles, M.
Neri, L.
Oliveira, J. R. B.
and Pakou, A.
Pandola, L.
Petrascu, H.
Pietralla, N. and
Pinna, F.
Reito, S.
Ries, P.
Rodrigues, M. R. D.
Russo,
A. D.
Russo, G.
Santopinto, E.
Santos, R. B. B.
Serbina,
L.
Sgouros, O.
da Silveira, M. A. G.
Solakci, S. O. and
Souliotis, G.
Soukeras, V
Spatafora, A.
Torresi, D. and
Tudisco, S.
Vargas Hernandez, H.
Vsevolodovna, R. I. M. and
Wang, J. S.
Werner, V
Yang, Y. Y.
Yildirin, A.
Zagatto,
V. A. B.
