2-NEUTRINO DOUBLE-BETA DECAY TRANSITION TO A 2(-STATE() EXCITED)

Authors
BOBYK A KAMINSKI WA
Citation
A. Bobyk et Wa. Kaminski, 2-NEUTRINO DOUBLE-BETA DECAY TRANSITION TO A 2(-STATE() EXCITED), Journal of physics. G, Nuclear and particle physics, 21(2), 1995, pp. 229-235
Citations number
26
Categorie Soggetti
Physics, Particles & Fields","Physics, Nuclear
Journal title
Journal of physics. G, Nuclear and particle physics → ACNP
ISSN journal
09543899
Volume
21
Issue
2
Year of publication
1995
Pages
229 - 235
Database
ISI
SICI code
0954-3899(1995)21:2<229:2DDTTA>2.0.ZU;2-N
Abstract
The Gamow-Teller matrix elements of 2 nu beta beta transitions to a 2( 1)(+) final excited state has been calculated within the QRPA formalis m for Ge-76 and Xe-136. The relative stability of the calculation with respect to the particle-particle interaction strength is confirmed; o n the other hand, the results are strongly dependent on the choice of the single-particle energy levels. A plausible explanation of such beh aviour, originating in the interference of the individual contribution s due to the third power of the energy denominator, has been proposed.