Weak Magnetism in Two Neutrino Double Beta Decay
We have extended the formalism for the two-neutrino double beta decay by including the weak-agnetism term, as well as other second-forbidden corrections. The weak magnetism diminishes the calculated half-lives in ∼ 10%, independently of the nuclear structure. Numerical computations were performed wi...
Guardado en:
Autores principales: | , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
1999
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/123012 |
Aporte de: |
id |
I19-R120-10915-123012 |
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record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Exactas Física Magnetism Neutrino Double beta decay Nuclear structure |
spellingShingle |
Ciencias Exactas Física Magnetism Neutrino Double beta decay Nuclear structure Barbero, César Alberto Krmpotić, Francisco Mariano, Alejandro Edgardo Tadić, Dubravko Weak Magnetism in Two Neutrino Double Beta Decay |
topic_facet |
Ciencias Exactas Física Magnetism Neutrino Double beta decay Nuclear structure |
description |
We have extended the formalism for the two-neutrino double beta decay by including the weak-agnetism term, as well as other second-forbidden corrections. The weak magnetism diminishes the calculated half-lives in ∼ 10%, independently of the nuclear structure. Numerical computations were performed within the pn-QRPA, for <sup>76</sup>Ge, <sup>82</sup>Se, <sup>100</sup>Mo, <sup>128</sup>T e and <sup>130</sup>T e nuclei. No one of the second-forbidden corrections modifies significantly the spectrum shapes. The total reduction in the calculated half lives varies from 6% up to 32%, and strongly depend on the nuclear interaction in the particle-particle S = 1, T = 0 channel. We conclude that the higher order effects in the weak Hamiltonian would hardly be observed in the two-neutrino double beta experiments. |
format |
Articulo Articulo |
author |
Barbero, César Alberto Krmpotić, Francisco Mariano, Alejandro Edgardo Tadić, Dubravko |
author_facet |
Barbero, César Alberto Krmpotić, Francisco Mariano, Alejandro Edgardo Tadić, Dubravko |
author_sort |
Barbero, César Alberto |
title |
Weak Magnetism in Two Neutrino Double Beta Decay |
title_short |
Weak Magnetism in Two Neutrino Double Beta Decay |
title_full |
Weak Magnetism in Two Neutrino Double Beta Decay |
title_fullStr |
Weak Magnetism in Two Neutrino Double Beta Decay |
title_full_unstemmed |
Weak Magnetism in Two Neutrino Double Beta Decay |
title_sort |
weak magnetism in two neutrino double beta decay |
publishDate |
1999 |
url |
http://sedici.unlp.edu.ar/handle/10915/123012 |
work_keys_str_mv |
AT barberocesaralberto weakmagnetismintwoneutrinodoublebetadecay AT krmpoticfrancisco weakmagnetismintwoneutrinodoublebetadecay AT marianoalejandroedgardo weakmagnetismintwoneutrinodoublebetadecay AT tadicdubravko weakmagnetismintwoneutrinodoublebetadecay |
bdutipo_str |
Repositorios |
_version_ |
1764820449612529665 |