Two neutrino double beta decay of Ca-48
1994
4 pages
Published in:
- Phys.Rev.C 49 (1994) 2233-2236
Citations per year
Abstract: (APS)
We have performed quasiparticle random phase approximation (QRPA) calculations for the 2νββ decay matrix element MGT2ν of Ca48 using realistic effective interactions derived from the Paris, Bonn, and Reid potentials. Unlike earlier QRPA calculations where the BCS self-energies were suppressed, we have retained these self-energies together with the use of the single-particle levels provided by a Ca40 core. Different choices for the single-particle levels are employed, and their effects on MGT2ν are compared. A majority of our calculated MGT2ν matrix elements are in good agreement with the experimental bounds of ‖MGT‖2ν<0.05 MeV−1, and exhibit good stability with respect to the variation of the particle-particle interaction strength gpp.- calcium: double-beta decay
- double-beta decay: calcium
- double-beta decay: (2neutrino)
- (2neutrino): double-beta decay
- S-matrix
- random phase approximation
- numerical calculations
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