SUPPRESSION OF MATRIX-ELEMENTS OF THE 2-NU-BETA-BETA DECAY BY THE COMPETITION BETWEEN SPIN-FLIP-LIKE AND NON-SPIN-FLIP-LIKE EXCITATIONS

被引：15

作者：

CIVITARESE, O

SUHONEN, J

FAESSLER, A

机构：

[1] UNIV JYVASKYLA, DEPT PHYS, SF-40351 JYVASKYLA, FINLAND

[2] UNIV TUBINGEN, INST THEORET PHYS, D-72076 TUBINGEN, GERMANY

来源：

NUCLEAR PHYSICS A | 1995年 / 591卷 / 02期

关键词：

D O I：

10.1016/0375-9474(95)00197-9

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The suppression of the nuclear matrix elements describing the two-neutrino nuclear double beta decay mode is studied in the context of a schematic model. The model is able to reproduce the features of extended calculations performed with realistic interactions, It is shown that the dominant mechanism leading to the suppression of the relevant nuclear matrix elements is the destructive interference between ''spin-flip''- and ''non-spin-flip''-like contributions to the transitions. Detailed results are shown for the case of the 2 nu beta beta ground-state-to-ground-state transition Ge-76 --> Se-76.

引用

页码：195 / 208

页数：14

共 20 条

[1]

BOEHM F, 1992, PHYSICS MASSIVE NEUT

[2]

BOHR A, 1969, NUCLEAR STRUCTURE, V1

[3] SUPPRESSION OF THE 2-NEUTRINO DOUBLE BETA-DECAY [J].