A Novel Nuclear Model for Double Beta Decay
| dc.creator | Krmpotić, Franjo | |
| dc.date | 2006-01-03 | |
| dc.date.accessioned | 2026-07-07T10:46:50Z | |
| dc.date.available | 2026-07-07T10:46:50Z | |
| dc.description | The possibility of applying the Quasiparticle Tamm-Dancoff Approximation (QTDA) to describe the nuclear double beta decay is explored. Several serious inconveniences found in the Quasiparticle Random Phase Approximation (QRPA), such as: i) the extreme sensitivity of the $2νββ$ decay amplitudes ${\cal M}_{2ν}$ on the residual interaction in the particle-particle channel, ii) the ambiguity in treating the intermediate states, and iii) the need for performing a second charge-conserving QRPA to describe the $ββ$-decays to the excited final states, are not present in the QTDA. Also, the QTDA allows for explicit evaluation of energy distributions of the double-charge-exchange transition strengths and of their sum rules, and can be straightforwardly applied to single- and double-closed shell nuclei. As an example, the $^{48}$Ca$\go^{48}$Ti decay is discussed within the $1fp$-shell in the particle-hole limit of the QTDA. The general [$(1,1)$-Padé-approximant-like] behavior of the $2νββ$-decay amplitude in the plain QRPA as well as within its different variations is briefly reviewed. | |
| dc.description | 29, 6 figures, paper devoted to honour the memory of Professor Dubravko Tadić | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0601007 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0601007 | |
| dc.identifier | FizikaB14:139-164,2005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183371 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A Novel Nuclear Model for Double Beta Decay | |
| dc.type | text |