Journal
PHYSICAL REVIEW C
Volume 86, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.86.034335
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Funding
- MINECO (Spain) [FIS2011-23565]
- Consolider-Ingenio Programs CPAN [CSD2007-00042]
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A theoretical approach based on a deformed quasiparticle random phase approximation built on a Skyrme self-consistent mean field is used to describe the recent measurements of the Gamow-Teller GT(-) strength distribution extracted from the charge-exchange reaction Ge-76(He-3, t)As-76 with high energy resolution. The same analysis is made to describe the Gamow-Teller GT(+) strength distribution measured in the Se-76(d, He-2)As-76 reaction. Combining these two branches, the nuclear matrix element for the two-neutrino double-beta decay process is evaluated and compared to experiment. The role of the nuclear deformation on those processes is emphasized and analyzed.
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