Shell model analysis of the neutrinoless double-β decay of 48Ca

被引：96

作者：

Horoi, Mihai ^{[1
]}

Stoica, Sabin ^{[2
]}

机构：

[1] Cent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USA

[2] Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, R-077125 Magurele, Romania

来源：

PHYSICAL REVIEW C | 2010年 / 81卷 / 02期

基金：

美国国家科学基金会;

关键词：

RANDOM-PHASE-APPROXIMATION; RENORMALIZED QRPA; MATRIX-ELEMENTS; HALF-LIVES; NUCLEI; TRANSITIONS; SUPPRESSION; BCS;

D O I：

10.1103/PhysRevC.81.024321

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 neutrinoless double-beta (0 nu beta beta) decay process could provide crucial information to determine the absolute scale of neutrino masses, and it is the only one that can establish whether a neutrino is a Dirac or a Majorana particle. A key ingredient for extracting the absolute neutrino masses from 0 nu beta beta decay experiments is a precise knowledge of the nuclear matrix elements (NMEs) describing the half-life of this process. We developed a shell model approach for computing the 0 nu beta beta decay NME, and we used it to analyze the 0 nu beta beta mode of Ca-48. The dependence of the NME on the short-range correlation parameters, on the average energy of the intermediate states, on the finite-size cutoff parameters, and on the effective interaction used for many-body calculations is discussed.

引用

页数：7

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