Double beta decay of 100Mo

被引：25
|
作者：
Ashitkov, VD
Barabash, AS
Belogurov, SG
Carugno, G
Konovalov, SI
Massera, F
Puglierin, G
Saakyan, RR
Stekhanov, VN
Umatov, VI
机构：
[1] Inst Theoret & Expt Phys, Moscow 117259, Russia
[2] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[3] Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy
[4] Ist Nazl Fis Nucl, Serv Bologna, I-40126 Bologna, Italy
[5] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy
来源：
JETP LETTERS | 2001年 / 74卷 / 11期
关键词：
D O I：
10.1134/1.1450283
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two-neutrino double beta decay of Mo-100 with half-life T-1/2 = [7.2 +/- 0.9(stat) +/- 1.8(syst)] x 10(18) yr was detected using a liquid argon ionization chamber. With a C.L. of 68% (90%), the bounds on neutrinoless decay and decay with majoron emission were found to be 8.4(4.9) x 10(21) and 4.1(3.2) x 10(20) yr, respectively. An analysis of all available results provides the average "world" value T-1/2 = (8.0 +/- 0.7) x 10(18) yr for the two-neutrino decay of Mo-100, and the corresponding nuclear matrix element is M-GT = 0.118 +/- 0.005. (C) 2001 MAIK "Nauka/Interperiodica".
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收藏
页码：529 / 531
页数：3
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