Artículo
β-decay rates of 121–131Cs in the microscopic interacting boson-fermion model
Autor/es | Mardones, E.
Barea, J. Alonso Alonso, Clara Eugenia Arias Carrasco, José Miguel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2016 |
Fecha de depósito | 2017-04-03 |
Publicado en |
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Resumen | β
-decay rates of
121–131
Cs have been calculated in the framework of the neutron-proton interacting boson-
fermion model (IBFM-2). For odd-
A
nuclei, the decay operator can be written in a relatively simple form in ... β -decay rates of 121–131 Cs have been calculated in the framework of the neutron-proton interacting boson- fermion model (IBFM-2). For odd- A nuclei, the decay operator can be written in a relatively simple form in terms of the one-nucleon transfer operator. Previous studies of β decay in IBFM-2 were based on a transfer operator obtained by using the number operator approximation (NOA). In this work a new form of the one-nucleon transfer operator, derived microscopically without the NOA approximation, is used. The results from both approaches are compared and show that the deviation from experimental data is reduced without using the NOA approximation. Indications about the renormalization of the Fermi and Gamow-Teller matrix elements are discussed. This is a further step toward a more complete description of low-lying states in medium and heavy nuclei which is necessary to compute reliable matrix elements in studies of current active interest such as double- β decay or neutrino absorption experiments |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España Junta de Andalucía |
Identificador del proyecto | info:eu-repo/grantAgreement/MINECO/FIS2014-53448-C2-1-P
FQM-160 P11-FQM-7632 |
Cita | Mardones, E., Barea, J., Alonso Alonso, C.E. y Arias Carrasco, J.M. (2016). β-decay rates of 121–131Cs in the microscopic interacting boson-fermion model. Physical Review C - Nuclear Physics, 93 (3), 34332-. |
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