${2��}$ Double Beta Decay within the Relativistic QRPA
| Autor: | De Conti, Cl��udio, Krmpoti��, Francisco, Carlson, Brett Vern |
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| Rok vydání: | 2012 |
| Předmět: | |
| DOI: | 10.48550/arxiv.1202.3511 |
| Popis: | We perform a self-consistent relativistic QRPA (RQRPA) calculation of $2��\b\b$-decay based on relativistic BCS (RBCS) mean field theory results for odd-odd intermediate nuclei $^{48}$Sc, $^{76}$As, $^{82}$Br, $^{100}$Tc, $^{128}$I, and $^{130}$I. The RBCS equations that resemble the non-relativistic ones are constructed from a Dirac-Gorkov variational functional. We use the parameter set $NL1$ for the $��$, $��$ and $��$ mesons. The RQRPA equations are solved for the residual $��+��$ interaction by employing the same parameters used in the RBCS for the latter meson, and experimental values for the pion and nucleon. The RQRPA results for the ${2��}\b\b$ matrix elements are similar to those obtained within the QRPA and the shell model. 8 pages, XXXIV edition of the Brazilian Workshop on Nuclear Physics, 5-10 June 2011, Foz de Igua\c{c}u, Paran\'a state, Brasil |
| Databáze: | OpenAIRE |
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