Proton pair correlations and the neutrinoless double-β decay of 76Ge

被引：14

作者：

Roberts, A. ^{[1
]}

Howard, A. M. ^{[1
]}

Kolata, J. J. ^{[1
]}

Villano, A. N. ^{[2
]}

Becchetti, F. D. ^{[3
]}

DeYoung, P. A. ^{[4
]}

Febbraro, M. ^{[3
]}

Freeman, S. J. ^{[5
]}

Kay, B. P. ^{[6
]}

McAllister, S. A. ^{[5
]}

Mitchell, A. J. ^{[5
]}

Schiffer, J. P. ^{[7
]}

Thomas, J. S. ^{[5
]}

Torres-Isea, R. O. ^{[3
]}

机构：

[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[2] Univ Minnesota, Dept Phys, Minneapolis, MN 55455 USA

[3] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[4] Hope Coll, Dept Phys, Holland, MI 49422 USA

[5] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[6] Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England

[7] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 05期

基金：

美国国家科学基金会; 英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevC.87.051305

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：

Proton pair correlations relevant for the neutrinoless double-beta decay of Ge-76 have been probed via the Ge-74,Ge-76(He-3,n) reactions at 16 MeV. No evidence for pairing vibrations in either nucleus is observed at sensitivity limits of similar to 6% and similar to 19% of the ground-state strength in Se-76 and Se-78, respectively. These results are relevant for the understanding of matrix elements for neutrinoless double-beta decay. The lack of pairing vibrations is consistent with a simple BCS structure for the ground states of Ge-76 and Se-76, assumed in quasiparticle random phase approximation (QRPA) models of the process.

引用

页数：5

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