Nuclear Physics of Non-Standard 0νββ-Decay

被引：0
|
作者：
Kotila, J. [1 ,2 ]
Graf, L. [3 ]
Deppisch, F. F. [4 ,5 ]
Iachello, F. [2 ]
机构：
[1] Univ Jyvaskyla, Finnish Inst Educ Res, POB 35, FI-40014 Jyvaskyla, Finland
[2] Yale Univ, Ctr Theoret Phys, Sloane Phys Lab, New Haven, CT 06520 USA
[3] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany
[4] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
[5] Austrian Acad Sci, Inst Hochenergiephys, Nikolsdorfer Gasse 18, A-1050 Vienna, Austria
来源：
WORKSHOP ON CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS (MEDEX '19) | 2019年 / 2165卷
基金：
芬兰科学院;
关键词：
DOUBLE-BETA-DECAY; SYMMETRY;
D O I：
10.1063/1.5130978
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The observation neutrinoless double beta (0 nu beta beta) decay remains crucial for understanding lepton number violation. In view of the difficulties to observe the mass mechanism of 0 nu beta beta-decay, investigations of other mechanisms are in order. These nonstandard mechanisms can be divided into short-range and long-range mechanisms. Recently, we have started systematic study for all possible short-range and long-range non-standard mechanisms. The aim of this study is twofold: I) to provide explicit formulas for the nuclear matrix elements (NMEs) and phase-space factors (PSFs) from which the decay rate for one or a combination of mechanisms operating at the same time can be calculated; II) to provide numerical values of the NMEs and PSFs obtained by making use of the microscopic interacting boson model (IBM-2) for the NMEs and of exact Dirac wave functions for the PSFs.
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页数：4
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