Abstract
The validity of the commonly assumed closure approximation has been tested by explicit calculations of the 0ν ββ-decay matrix elements of 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 2ν decay, the 0ν ββ-decay matrix elements are not greatly suppressed, but are comparable to those of shell model calculations. They are dominated by multipoles other than and .
- Received 1 May 1990
DOI:https://doi.org/10.1103/PhysRevC.43.R21
©1991 American Physical Society