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dc.contributor.author
Sáez, María Manuela
dc.contributor.author
Fushimi, Keiko Juliana
dc.contributor.author
Mosquera, Mercedes Elisa
dc.contributor.author
Civitarese, Enrique Osvaldo
dc.date.available
2022-03-03T19:57:39Z
dc.date.issued
2021-04
dc.identifier.citation
Sáez, María Manuela; Fushimi, Keiko Juliana; Mosquera, Mercedes Elisa; Civitarese, Enrique Osvaldo; Limits on active-sterile neutrino mixing parameters using heavy nuclei abundances; World Scientific; International Journal of Modern Physics E - Nuclear Physics; 30; 4; 4-2021; 1-15
dc.identifier.issn
0218-3013
dc.identifier.uri
http://hdl.handle.net/11336/152871
dc.description.abstract
The production of heavy-mass elements due to the rapid neutron-capture mechanism (r-process) is associated with astrophysical scenarios, such as supernovae and neutron-star mergers. In the r-process the capture of neutrons is followed by β-decays until nuclear stability is reached. A key element in the chain of nuclear weak-decays leading to the production of isotopes may be the change of the parameters controlling the neutrino sector, due to the mixing of active and sterile species. In this work, we have addressed this question and calculated β-decay rates for the nuclei involved in the r-process chains as a function of the neutrino mixing parameters. These rates are then used in the calculation of the abundance of the heavy elements produced in core-collapse supernova and in neutron-star mergers, starting from different initial mass-fraction distributions. The analysis shows that the core-collapse supernova environment contributes with approximately 30% of the total heavy nuclei abundance while the neutron-star merger contributes with about 70% of it. Using available experimental data we have performed a statistical analysis to set limits on the active-sterile neutrino mixing angle and found a best-fit value sin22 14 = 0.22, a value comparable with those found in other studies reported in the literature.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
World Scientific
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
NEUTRON-STAR MERGERS
dc.subject
NUCLEAR REACTIONS
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NUCLEO-SYNTHESIS
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STERILE NEUTRINOS
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SUPERNOVAS
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Limits on active-sterile neutrino mixing parameters using heavy nuclei abundances
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-03-02T15:46:58Z
dc.journal.volume
30
dc.journal.number
4
dc.journal.pagination
1-15
dc.journal.pais
Singapur
dc.description.fil
Fil: Sáez, María Manuela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Fushimi, Keiko Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina
dc.description.fil
Fil: Mosquera, Mercedes Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina
dc.description.fil
Fil: Civitarese, Enrique Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina
dc.journal.title
International Journal of Modern Physics E - Nuclear Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.worldscientific.com/doi/abs/10.1142/S0218301321500282
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1142/S0218301321500282
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