Double-. beta. -decay matrix elements

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Physical Review, C (Nuclear Physics); (USA)

OSTI ID:6040286

Faessler, A; Kaminski, W A; Pantis, G; Vergados, J D ^[1]

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1. Institut fuer Theoretische Physik, Universitaet Tuebingen, D-7400 Tuebingen, Federal Republic of Germany (DE) Theoretical Physics Division, The University of Ioannina, P.O. Box 1186, GR 451 10, Greece Theoretical Physics Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

The validity of the commonly assumed closure approximation has been tested by explicit calculations of the 0{nu} {beta}{beta}-decay matrix elements of {sup 76}Ge{r arrow}{sup 76}Se performed in the context of the quasiparticle random-phase approximation with a realistic model space. The closure approximation seems to work well for those matrix elements not very suppressed. Our results indicate that unlike the 2{nu} decay, the 0{nu} {beta}{beta}-decay matrix elements are not greatly suppressed, but are comparable to those of shell model calculations. They are dominated by multipoles other than 0{sup +} and 1{sup +}.

• OSTI ID: 6040286
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 43:1; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653005* -- Nuclear Theory-- Radioactive Decay
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA-MINUS DECAY
DECAY
DOUBLE BETA DECAY
EVEN-EVEN NUCLEI
GERMANIUM 76
GERMANIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATRIX ELEMENTS
NUCLEAR DECAY
NUCLEI
RANDOM PHASE APPROXIMATION
SELENIUM 76
SELENIUM ISOTOPES
STABLE ISOTOPES