Shell Model Studies of the Double Beta Decays of {sup 76}Ge, {sup 82}Se, and {sup 136}Xe

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.1954· OSTI ID:383278

Caurier, E; Nowacki, F; Poves, A; Retamosa, J ^[1]

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1. Centre de Recherches Nucleaires/Universite Louis Pasteur, BP20 F-67037, Strasbourg Cedex-2 (France)

The double beta decays of {sup 76}Ge, {sup 82}Se, and {sup 136}Xe are studied in very large shell model spaces. The dimensions of the shell model spaces used in these calculations reach {ital O}(10{sup 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 1eV, we get the following upper bounds to the half-lives for the neutrinoless decays: {ital T}{sub 1/2}{sup (0{nu})}(Ge){gt}1.85{times}10{sup 25}yr, {ital T}{sub 1/2}{sup (0{nu})}(Se){gt}2.36{times}10{sup 24}yr, and {ital T}{sub 1/2}{sup (0{nu})}(Xe){gt}1.21{times}10{sup 25}yr. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 383278
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 77; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DOUBLE BETA DECAY
GERMANIUM 76
HALF-LIFE
MASS
MATRIX ELEMENTS
NEUTRINOS
SELENIUM 82
SHELL MODELS
XENON 136