Spin-dipole nuclear matrix element for the double beta decay of 76Ge by the (3He, t) charge-exchange reaction

被引：7

作者：

Akimune, H. ^{[1
]}

Ejiri, H. ^{[2
]}

Hattori, F. ^{[1
]}

Agodi, C. ^{[3
]}

Alanssari, M. ^{[4
]}

Cappuzzello, F. ^{[3
,5
]}

Carbone, D. ^{[3
]}

Cavallaro, M. ^{[3
]}

Colo, G. ^{[6
]}

Diel, F. ^{[7
]}

Douma, C. A. ^{[8
]}

Frekers, D. ^{[4
]}

Fujita, H. ^{[9
]}

Fujita, Y. ^{[9
]}

Fujiwara, M. ^{[2
]}

Gey, G. ^{[2
]}

Harakeh, M. N. ^{[8
]}

Hatanaka, K. ^{[2
]}

Heguri, K. ^{[1
]}

Holl, M. ^{[4
]}

Inoue, A. ^{[2
]}

Kalantar-Nayestanaki, N. ^{[8
]}

Niu, Y. F. ^{[10
]}

Puppe, P. ^{[4
]}

Ries, P. C. ^{[11
]}

Tamii, A. ^{[2
]}

Werner, V ^{[11
]}

Zuber, K. ^{[12
]}

机构：

[1] Konan Univ, Higashinada Ku, 8 Chome 9-1 Okamoto, Kobe, Hyogo, Japan

[2] Osaka Univ, RCNP, Ibaraki, Osaka 5670047, Japan

[3] Ist Nazl Fis Nucl, Lab Nazl Sud, Via S Sofia 62, I-95125 Catania, Italy

[4] Univ Munster, Inst Kernphys, D-48341 Munster, Germany

[5] Catania Univ, Dipartimento Fis & Astron Ettore Majorana, Via S Sofia 64, I-95125 Catania, Italy

[6] Univ Milan, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy

[7] Koln Univ, Zulpicher Str 77, D-50937 Cologne, Germany

[8] Univ Groningen, KVI CART, Zernikelaan 25, NL-9747 AA Groningen, Netherlands

[9] Osaka Univ, Dept Phys, Toyonaka, Osaka 560, Japan

[10] Lanzhou Univ, Nucl Sci & Technol, Lanzhou 730000, Peoples R China

[11] Tech Univ Darmstadt, Inst Kernphys, Schlossgartenstr 9, D-64289 Darmstadt, Germany

[12] Tech Univ Dresden, IKTP, D-01069 Dresden, Germany

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2020年 / 47卷 / 05期

关键词：

double beta decay of Ge-76; charge-exchange reaction; spin-dipole matrix element; quenching of axial-vector coupling g(A); ORDINARY MUON-CAPTURE; TRANSITIONS; HINDRANCE; PROBE;

D O I：

10.1088/1361-6471/ab7a87

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：

Nuclear matrix elements (NMEs) for double beta decays (DBDs) are crucial for studying the neutrino mass and other neutrino properties beyond the standard electro-weak model by measuring neutrino-less DBDs. The spin-dipole (SD) J(pi) = 2(-) NME is one of the major components associated with the DBD NME. The SD NME for Ge-76 was derived for the first time by using the (74,76) Ge (He-3, t) at RCNP Osaka. The obtained SD NME for the Ge-76 -> As-76 ground-state transition is divide M EXP-(SD) ivide = 1.5 x 10-3 k 0.2 with respect to the quasi-particle model NME divide MQP-(SD) divide <i. The impact of the reduced (quenched) SD NME on DBD neutrino studies is discussed.

引用

页数：9

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