Neutrinoless Double Beta Decay

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Cremonesi, Oliviero^1

INFN Sez. Milano Bicocca, Piazza della Scienza 3, Milano

20126, Italy^1

关键词: Coupling constants;    Majorana particles;    Majorana phasis;    Mass hierarchy;    Neutrino oscillations;    Neutrinoless double-beta decays;    Nuclear matrix elements;    Practical method;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/2/022006/pdf
DOI  :  10.1088/1742-6596/718/2/022006

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

After more than 3/4 of century from its proposal, Neutrinoless Double Beta Decay (NLDBD) is still missing observation and continues to represent the only practical method for investigating the Dirac/Majorana nature of neutrinos. In case neutrinos would be Majorana particles, NLDBD would provide unique informations on their properties (absolute mass scale and Majorana phases). Boosted by the discovery of neutrino oscillations, a number of experiments with improved sensitivity have been proposed in the past decade. Some of them have recently started operation and others are ready to start. They will push the experimental sensitivity on the decay halflife beyond 1026year, starting to analyze the region of the inverted mass hierarchy. The status and perspectives of the ongoing experimental effort are reviewed. Uncertainties coming from the calculation othe decay nuclear matrix elements (NME) as well as the recently suggested possibility of a relevant quenching of the axial coupling constant are also discussed.