β decay of even-A nuclei within the interacting boson model with input based on nuclear density functional theory
| Autor: | Nomura, K., Rodríguez-Guzmán, R., Robledo Martín, Luis Miguel |
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| Přispěvatelé: | UAM. Departamento de Física Teórica |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Physical Review C Volume 101 Issue 4 Biblos-e Archivo. Repositorio Institucional de la UAM instname |
| ISSN: | 2469-9985 2469-9993 |
| Popis: | We compute the β-decay ft values within the frameworks of the energy density functional (EDF) and the interacting boson model (IBM). Based on the constrained mean-field calculation with the Gogny- D1M EDF, the IBM Hamiltonian for an even-even nucleus and essential ingredients of the interacting boson- fermion-fermion model (IBFFM) for describing the neighboring odd-odd nucleus are determined in a microscopic way. Only the boson-fermion and residual neutron-proton interaction strengths are determined empirically. The Gamow-Teller (GT) and Fermi (F) transition rates needed to compute the β-decay f t values are obtained without any additional parameter or quenching of the gA factor. The observed log f t values for the β+ decays of the even-even Ba into odd-odd Cs nuclei, and of the odd-odd Cs to the even- even Xe nuclei, with mass A ≈ 130 are reasonably well described. The predicted GT and F transition rates represent a sensitive test of the quality of the IBM and IBFFM wave functions. |
| Databáze: | OpenAIRE |
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