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The nuclear matrix elements of 0νββ decay and the NUMEN project at INFN-LNS
- Source :
- EPJ Web of Conferences, Vol 117, p 10003 (2016), EPJ Web of Conferences, Vol 194, p 02001 (2018)
- Publication Year :
- 2018
- Publisher :
- EDP Sciences, 2018.
-
Abstract
- The goal of NUMEN project is to access experimentally driven information on Nuclear Matrix Elements (NME) involved in the neutrinoless double beta decay (0νββ), by high-accuracy measurements of the cross sections of Heavy Ion (HI) induced Double Charge Exchange (DCE) reactions. The knowledge of the nuclear matrix elements is crucial to infer the neutrino average masses from the possible measurement of the half-life of 00νββ decay and to compare experiments on different isotopes. In particular, the (18O, 18Ne) and (20Ne, 20O) reactions are performed as tools for β+β+ and β-β- decays, respectively. The experiments are performed at INFN - Laboratory Nazionali del Sud (LNS) in Catania using the Superconducting Cyclotron (CS) to accelerate the beams and the MAGNEX magnetic spectrometer to detect the reaction products. The measured cross sections are very low, limiting the present exploration to few selected isotopes of interest in the context of typically low-yield experimental runs. In order to make feasible a systematic study of all the candidate nuclei, a major upgrade of the LNS facility is foreseen to increase the experimental yield of about two orders of magnitude. To this purpose, frontier technologies are going to be developed for both the accelerator and the detection systems. In parallel, advanced theoretical models will be developed to extract the nuclear structure information from the measured cross sections.
- Subjects :
- Physics
Semileptonic decay
Spectrometer
010308 nuclear & particles physics
QC1-999
Cyclotron
7. Clean energy
01 natural sciences
Beta decay
law.invention
Nuclear physics
Superconducting cyclotron
law
The NUMEN project
Double beta decay
Beta (plasma physics)
0103 physical sciences
010306 general physics
Charge exchange
Subjects
Details
- ISSN :
- 2100014X
- Volume :
- 194
- Database :
- OpenAIRE
- Journal :
- EPJ Web of Conferences
- Accession number :
- edsair.doi.dedup.....09ccb7dde7bbd1263e67bcfece901e00