SCHEMATIC STUDY OF PERTURBATIVE EFFECTS ON THE 2-NEUTRINO DOUBLE-BETA DECAY TO EXCITED-STATES

被引：11

作者：

CIVITARESE, O ^{[1
]}

SUHONEN, J ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 1994年 / 20卷 / 09期

关键词：

D O I：

10.1088/0954-3899/20/9/013

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：

Matrix elements for the two-neutrino double beta decay of Xe-136 to the ground and excited stales of Ba-136 are calculated using a schematic model. The separable proton-neutron interaction includes, in addition to the particle-hole channel, a particle-particle channel. It is found that this force yields nearly the same results as realistic interactions for leading-order QRPA contributions. Perturbative effects associated with the coupling between quasiparticles and phonons, both of the charge-conserving and charge-non-conserving type, are studied and found to be dominated by the coupling to charge-non-conserving 1(+) proton-neutron phonons.

引用

页码：1441 / 1446

页数：6

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