Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter
- Autores
- Rocha de Azevedo, M.; Ferreira, R. C.; Barbero, César Alberto
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We improve the results for the β⁻-decay rates obtained within the context of the Gross Theory of Beta Decay (GTBD) by using new values of the parameter σN related to the standard deviation for the Gamow-Teller resonance: we include experimental data when they are available and, if not, we adopt the value of the nearest neighbor previous (that is, with less mass) that has experimental data. We evaluate the β⁻-decay rates using a Gaussian energy distribution function with the axial-vector weak coupling constant |gA| = 1, considering updated experimental mass defects and also an improved approximation for the Fermi function. Our sample consists of 94 nuclei with mass in the range 46 < A < 70, all of them decaying by means of allowed transitions, which are of interest in the pre-supernova phase and have experimental data in terrestrial conditions available in the Letter of Nuclides. We compare our result with those obtained within the same GTBD but using values of σN adjusted in Possidonio (Braz. J. Phys. 48:485, 2018) by minimizing the χ²-function, and also with systematic microscopic calculations. We have shown that the substitution of the adjusted parameters by experimental data in GTBD improves the results for β⁻-decay rates by 6.4%.
Facultad de Ciencias Exactas
Instituto de Física La Plata - Materia
-
Ciencias Exactas
Física
Beta decay
Adjustment parameters
Gross theory of beta decay - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/130713
Ver los metadatos del registro completo
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Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance ParameterRocha de Azevedo, M.Ferreira, R. C.Barbero, César AlbertoCiencias ExactasFísicaBeta decayAdjustment parametersGross theory of beta decayWe improve the results for the β⁻-decay rates obtained within the context of the Gross Theory of Beta Decay (GTBD) by using new values of the parameter σ<sub>N</sub> related to the standard deviation for the Gamow-Teller resonance: we include experimental data when they are available and, if not, we adopt the value of the nearest neighbor previous (that is, with less mass) that has experimental data. We evaluate the β⁻-decay rates using a Gaussian energy distribution function with the axial-vector weak coupling constant |g<sub>A</sub>| = 1, considering updated experimental mass defects and also an improved approximation for the Fermi function. Our sample consists of 94 nuclei with mass in the range 46 < A < 70, all of them decaying by means of allowed transitions, which are of interest in the pre-supernova phase and have experimental data in terrestrial conditions available in the Letter of Nuclides. We compare our result with those obtained within the same GTBD but using values of σ<sub>N</sub> adjusted in Possidonio (<i>Braz. J. Phys.</i> 48:485, 2018) by minimizing the χ²-function, and also with systematic microscopic calculations. We have shown that the substitution of the adjusted parameters by experimental data in GTBD improves the results for β⁻-decay rates by 6.4%.Facultad de Ciencias ExactasInstituto de Física La Plata2020-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf466-470http://sedici.unlp.edu.ar/handle/10915/130713enginfo:eu-repo/semantics/altIdentifier/issn/0103-9733info:eu-repo/semantics/altIdentifier/issn/1678-4448info:eu-repo/semantics/altIdentifier/doi/10.1007/s13538-020-00761-yinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:32:17Zoai:sedici.unlp.edu.ar:10915/130713Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:32:18.047SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| title |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| spellingShingle |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter Rocha de Azevedo, M. Ciencias Exactas Física Beta decay Adjustment parameters Gross theory of beta decay |
| title_short |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| title_full |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| title_fullStr |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| title_full_unstemmed |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| title_sort |
Beta Decay Rates Evaluated Within the Gross Theory Using Experimental Data for the Gamow-Teller Resonance Parameter |
| dc.creator.none.fl_str_mv |
Rocha de Azevedo, M. Ferreira, R. C. Barbero, César Alberto |
| author |
Rocha de Azevedo, M. |
| author_facet |
Rocha de Azevedo, M. Ferreira, R. C. Barbero, César Alberto |
| author_role |
author |
| author2 |
Ferreira, R. C. Barbero, César Alberto |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Beta decay Adjustment parameters Gross theory of beta decay |
| topic |
Ciencias Exactas Física Beta decay Adjustment parameters Gross theory of beta decay |
| dc.description.none.fl_txt_mv |
We improve the results for the β⁻-decay rates obtained within the context of the Gross Theory of Beta Decay (GTBD) by using new values of the parameter σ<sub>N</sub> related to the standard deviation for the Gamow-Teller resonance: we include experimental data when they are available and, if not, we adopt the value of the nearest neighbor previous (that is, with less mass) that has experimental data. We evaluate the β⁻-decay rates using a Gaussian energy distribution function with the axial-vector weak coupling constant |g<sub>A</sub>| = 1, considering updated experimental mass defects and also an improved approximation for the Fermi function. Our sample consists of 94 nuclei with mass in the range 46 < A < 70, all of them decaying by means of allowed transitions, which are of interest in the pre-supernova phase and have experimental data in terrestrial conditions available in the Letter of Nuclides. We compare our result with those obtained within the same GTBD but using values of σ<sub>N</sub> adjusted in Possidonio (<i>Braz. J. Phys.</i> 48:485, 2018) by minimizing the χ²-function, and also with systematic microscopic calculations. We have shown that the substitution of the adjusted parameters by experimental data in GTBD improves the results for β⁻-decay rates by 6.4%. Facultad de Ciencias Exactas Instituto de Física La Plata |
| description |
We improve the results for the β⁻-decay rates obtained within the context of the Gross Theory of Beta Decay (GTBD) by using new values of the parameter σ<sub>N</sub> related to the standard deviation for the Gamow-Teller resonance: we include experimental data when they are available and, if not, we adopt the value of the nearest neighbor previous (that is, with less mass) that has experimental data. We evaluate the β⁻-decay rates using a Gaussian energy distribution function with the axial-vector weak coupling constant |g<sub>A</sub>| = 1, considering updated experimental mass defects and also an improved approximation for the Fermi function. Our sample consists of 94 nuclei with mass in the range 46 < A < 70, all of them decaying by means of allowed transitions, which are of interest in the pre-supernova phase and have experimental data in terrestrial conditions available in the Letter of Nuclides. We compare our result with those obtained within the same GTBD but using values of σ<sub>N</sub> adjusted in Possidonio (<i>Braz. J. Phys.</i> 48:485, 2018) by minimizing the χ²-function, and also with systematic microscopic calculations. We have shown that the substitution of the adjusted parameters by experimental data in GTBD improves the results for β⁻-decay rates by 6.4%. |
| publishDate |
2020 |
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2020-08 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/130713 |
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eng |
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eng |
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