Shell model studies of the double beta decays of Ge-76, Se-82, and Xe-136

被引:192
作者
Caurier, E
Nowacki, F
Poves, A
Retamosa, J
机构
[1] UNIV LOUIS PASTEUR STRASBOURG 1, CTR RECH NUCL, F-67037 STRASBOURG 2, FRANCE
[2] UNIV AUTONOMA MADRID, DEPT FIS TEOR CXI, E-28049 MADRID, SPAIN
关键词
D O I
10.1103/PhysRevLett.77.1954
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The double beta decays of Ge-76, Se-82, and Xe-136 are studied in very large shell model spaces. The dimensions of the shell model spaces used in these calculations reach O(10(8)). The two neutrino matrix elements obtained are in good agreement with the available experimental data. Assuming that the mass of the neutrino is smaller than 1 eV, we get the following upper bounds to the half-lives for the neutrinoless decays: T-1/2((0 nu))(Ge) > 1.85 x 10(25) yr, T-1/2((0 nu))(Se) > 2.36 x 10(24) yr, and T-1/2((0 nu)) 1/2 (Xe)> 1.21 x 10(25) yr.
引用
收藏
页码:1954 / 1957
页数:4
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