PERTURBATIVE TREATMENT OF THE 2-NEUTRINO DOUBLE BETA-DECAY TO EXCITED 2(+) STATES

被引：34

作者：

CIVITARESE, O ^{[1
]}

SUHONEN, J ^{[1
]}

机构：

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

来源：

NUCLEAR PHYSICS A | 1994年 / 578卷 / 1-2期

基金：

芬兰科学院;

关键词：

D O I：

10.1016/0375-9474(94)90969-5

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 two-neutrino double-beta-decay transitions of Ge-76 and Xe-136 to the ground and excited states of the nuclei Se-76 and Ba-136, respectively, are calculated using a separable proton-neutron interaction. The corresponding nuclear matrix elements are computed by using the quasiparticle random-phase approximation (QRPA). In addition, the coupling between quasiparticles and QRPA phonons, both of the charge-conserving and charge-non-conserving type, is included perturbatively in the calculation of double-beta-decay observables. It is found that these corrections do not change, significantly, the order of magnitude of the matrix elements for the two-neutrino double-beta-decay transitions to the first excited quadrupole state of the daughter nuclei.

引用

页码：62 / 76

页数：15

共 21 条

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