Valence neutron properties relevant to the neutrinoless double-β decay of 130Te

被引：31

作者：

Kay, B. P. ^{[1
]}

Bloxham, T. ^{[2
,3
]}

McAllister, S. A. ^{[4
]}

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

Deibel, C. M. ^{[5
,6
]}

Freedman, S. J. ^{[2
,3
]}

Freeman, S. J. ^{[4
]}

Han, K. ^{[2
,3
]}

Howard, A. M. ^{[4
]}

Mitchell, A. J. ^{[4
]}

Parker, P. D. ^{[7
]}

Schiffer, J. P. ^{[5
]}

Sharp, D. K. ^{[4
]}

Thomas, J. S. ^{[4
]}

机构：

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

[2] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

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

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

[6] Michigan State Univ, Joint Inst Lab Astrophys, E Lansing, MI 48824 USA

[7] Yale Univ, AW Wright Nucl Struct Lab, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW C | 2013年 / 87卷 / 01期

基金：

英国科学技术设施理事会;

关键词：

ORBITAL OCCUPANCIES; NUCLEAR-STRUCTURE; HOLE STATES;

D O I：

10.1103/PhysRevC.87.011302

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 valence neutron composition of the Te-130 and Xe-130 ground states has been studied with a view to constraining calculations of the nuclear matrix element for the neutrinoless double-beta decay of Te-130. Single-neutron adding and removing reactions on Te-128,Te-130 and Xe-130,Xe-132 have been used to probe the vacancy of the 0g7/2, 1d(5/2), 1d(3/2), 2s(1/2), and 0h(11/2) orbitals. The change in the vacancy of these orbitals, obtained through a self-consistent determination of spectroscopic factors utilizing the Macfarlane-French sum rules, for Te-130 -> Xe-130 is shared only between the d, s(1/2), and h(11/2) orbitals, with the g(7/2) playing no significant role. This is in disagreement with recent calculations within both the quasiparticle random-phase approximation and shell-model frameworks, which show a role for the g(7/2) orbital that should have been observable. The neutron pairing properties of Xe-130 have also been explored through the Xe-132((p, t)) reaction showing no evidence for pairing vibrations.

引用

页数：6

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