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 (0 nu beta beta), by high-accuracy
measurements of the cross sections of Heavy Ion (HI) induced Double
Charge Exchange (DCE) reactions. Particular attention is given to the
(O-18, Ne-18) and (Ne-20, O-20) reactions as tools for beta+beta+ and
beta-beta-decays, respectively. First evidence about the possibility to
get quantitative information about NME from experiments is found for
both kind of reactions. 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 products are detected
the MAGNEX magnetic spectrometer. The measured cross sections are
challengingly low, limiting 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 foreseen in order to
increase the experimental yield of at least two orders of magnitude,
thus making feasible a systematic study of all the cases of interest.
Frontiers technologies are going to be developed, to this purpose, for
the accelerator and the detection systems. In parallel, advanced
theoretical models will be developed in order to extract the nuclear
structure information from the measured cross sections.
Συγγραφείς:
Cappuzzello, F.
Agodi, C.
Acosta, L.
Auerbach, N. and
Bellone, J.
Bijker, R.
Bonanno, D.
Bongiovanni, D. and
Borello-Lewin, T.
Boztosun, I.
Branchina, V.
Bussa, M. P.
and Calabrese, S.
Calabretta, L.
Calanna, A.
Carbone, D. and
Cavallaro, M.
Calvo, D.
Lomeli, E. R. Chavez
Coban, A. and
Colonna, M.
D'Agostino, G.
Degeronimo, G.
Delaunay, F. and
Deshmukh, N.
de Faria, P. N.
Ferraresi, C.
Ferreira, J. L.
and Fisichella, M.
Foti, A.
Finocchiaro, P.
Gallo, G. and
Garcia, U.
Giraudo, G.
Greco, V.
Hacisalihoglu, A. and
Kotila, J.
Iazzi, F.
Introzzi, R.
Lanzalone, G.
Lavagno,
A.
La Via, F.
Lay, J. A.
Lenske, H.
Linares, R. and
Litrico, G.
Longhitano, F.
Lo Presti, D.
Lubian, J. and
Medina, N.
Mendes, D. R.
Muoio, A.
Oliveira, J. R. B. and
Pakou, A.
Pandola, L.
Petrascu, H.
Pinna, F.
Reito, S.
and Rifuggiato, D.
Rodrigues, M. R. D.
Russo, A. D.
Russo,
G.
Santagati, G.
Santopinto, E.
Sgouros, O.
Solakci, S.
O.
Souliotis, G.
Soukeras, V.
Spatafora, A.
Torresi, D.
and Tudisco, S.
Vsevolodovna, R. I. M.
Wheadon, R. J. and
Yildirin, A.
Zagatto, V.
