Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications

Assuming the universality of weak interactions, we have studied the weak processes such as β-decay and electron capture using the nuclear gross theory of beta decay (GTBD). We evaluate the β± and electron capture decay rates and the neutrino–nucleus cross sections as a function of the energy of the...

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Autores principales: Barbero, César Alberto, Santos, M. Cassiano dos, Samana, A. R.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
β-decay
Electron capture
Neutrino–nucleus cross section
Gross theory of beta decay
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146224
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146224
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
β-decay
Electron capture
Neutrino–nucleus cross section
Gross theory of beta decay
spellingShingle Física
β-decay
Electron capture
Neutrino–nucleus cross section
Gross theory of beta decay
Barbero, César Alberto
Santos, M. Cassiano dos
Samana, A. R.
Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
topic_facet Física
β-decay
Electron capture
Neutrino–nucleus cross section
Gross theory of beta decay
description Assuming the universality of weak interactions, we have studied the weak processes such as β-decay and electron capture using the nuclear gross theory of beta decay (GTBD). We evaluate the β± and electron capture decay rates and the neutrino–nucleus cross sections as a function of the energy of the incident neutrino, for Eν < 250 MeV. The evaluation performed some years ago for the electron neutrino–nucleus reactions in the mass region A < 70 is extended to the heavy one A < 220 for a set of 965 nuclear species of astrophysical interest. The nuclei are separated according to its parity in even–even, even–odd, odd–odd, and odd–even nuclei, both for β±-decay and electron capture. The obtained cross sections are interpolated by means of a fourth-degree polynomial function in Eν. The coefficients in these polynomials are obtained and later fitted as a function of A and Z. The fitting procedure is described in detail paying special attention to the root mean square deviations in the adjustment. These polynomial functions provide a tool for the systematic evaluation of the cross sections needed in astrophysical processes like the r-process during the nucleosynthesis of supernovae.
format Articulo
Articulo
author Barbero, César Alberto
Santos, M. Cassiano dos
Samana, A. R.
author_facet Barbero, César Alberto
Santos, M. Cassiano dos
Samana, A. R.
author_sort Barbero, César Alberto
title Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
title_short Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
title_full Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
title_fullStr Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
title_full_unstemmed Systematic Calculation of Neutrino–Nucleus Cross Section Available for Astrophysical Applications
title_sort systematic calculation of neutrino–nucleus cross section available for astrophysical applications
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/146224
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AT santosmcassianodos systematiccalculationofneutrinonucleuscrosssectionavailableforastrophysicalapplications
AT samanaar systematiccalculationofneutrinonucleuscrosssectionavailableforastrophysicalapplications
bdutipo_str Repositorios
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