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

Caurier, E.; Nowacki, F.; Poves, A.; Retamosa, J.

doi:10.1103/PhysRevLett.77.1954

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

Jan, 1996

3 pages

Published in:

Phys.Rev.Lett. 77 (1996) 1954-1957

e-Print:

nucl-th/9601017 [nucl-th]

DOI:

10.1103/PhysRevLett.77.1954

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Abstract:

The lifetimes for the double beta decays of

~{76}

Ge,

~{82}

Se and

~{136}

Xe are calculated using very large shell model spaces. The two neutrino matrix elements obtained are in good agreement with the present experimental data. For

<m_{\nu}><1

eV we predict the following upper bounds to the half-lives for the neutrinoless mode:

T~{(0\nu)}_{1/2}(Ge) > 1.85\,10~{25} yr.

,

T~{(0\nu)}_{1/2}(Se) > 2.36\,10~{24} yr.

and

T~{(0\nu)}_{1/2}(Xe) > 1.21\,10~{25} yr

. These results are the first from a new generation of Shell Model calculations reaching O(10

~{8}

) dimensions.

27.50.+e
21.60.Cs
27.60.+j
23.40.Bw
double-beta decay: (0neutrino)
(0neutrino): double-beta decay
germanium
selenium
xenon
shell model

References(19)

Figures(0)

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