Effects of active–sterile neutrino mixing during primordial nucleosynthesis
- Autores
- Civitarese, Enrique Osvaldo; Mosquera, Mercedes Elisa; Sáez, María Manuela
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In the present work, we discuss the effects of the inclusion of sterile–active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass-eigenstates, with mixing angles ϕ1 and ϕ2. We also allow a constant renormalization (represented by a parameter (ζ)) of the sterile neutrino occupation factor. Taking ζ and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of ζ smaller than 0.65 at 3σ level.
Facultad de Ciencias Exactas
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Física
Sterile neutrino
Neutrino mixing
Primordial nucleosysthesis - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/127046
Ver los metadatos del registro completo
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Effects of active–sterile neutrino mixing during primordial nucleosynthesisCivitarese, Enrique OsvaldoMosquera, Mercedes ElisaSáez, María ManuelaFísicaSterile neutrinoNeutrino mixingPrimordial nucleosysthesisIn the present work, we discuss the effects of the inclusion of sterile–active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass-eigenstates, with mixing angles ϕ1 and ϕ2. We also allow a constant renormalization (represented by a parameter (ζ)) of the sterile neutrino occupation factor. Taking ζ and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of ζ smaller than 0.65 at 3σ level.Facultad de Ciencias ExactasFacultad de Ciencias Astronómicas y Geofísicas2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/127046enginfo:eu-repo/semantics/altIdentifier/issn/0218-3013info:eu-repo/semantics/altIdentifier/issn/1793-6608info:eu-repo/semantics/altIdentifier/doi/10.1142/s0218301314500803info: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:UNLP2025-09-29T11:30:38Zoai:sedici.unlp.edu.ar:10915/127046Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:30:39.132SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
title |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
spellingShingle |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis Civitarese, Enrique Osvaldo Física Sterile neutrino Neutrino mixing Primordial nucleosysthesis |
title_short |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
title_full |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
title_fullStr |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
title_full_unstemmed |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
title_sort |
Effects of active–sterile neutrino mixing during primordial nucleosynthesis |
dc.creator.none.fl_str_mv |
Civitarese, Enrique Osvaldo Mosquera, Mercedes Elisa Sáez, María Manuela |
author |
Civitarese, Enrique Osvaldo |
author_facet |
Civitarese, Enrique Osvaldo Mosquera, Mercedes Elisa Sáez, María Manuela |
author_role |
author |
author2 |
Mosquera, Mercedes Elisa Sáez, María Manuela |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Física Sterile neutrino Neutrino mixing Primordial nucleosysthesis |
topic |
Física Sterile neutrino Neutrino mixing Primordial nucleosysthesis |
dc.description.none.fl_txt_mv |
In the present work, we discuss the effects of the inclusion of sterile–active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass-eigenstates, with mixing angles ϕ1 and ϕ2. We also allow a constant renormalization (represented by a parameter (ζ)) of the sterile neutrino occupation factor. Taking ζ and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of ζ smaller than 0.65 at 3σ level. Facultad de Ciencias Exactas Facultad de Ciencias Astronómicas y Geofísicas |
description |
In the present work, we discuss the effects of the inclusion of sterile–active neutrino oscillations during the production of primordial light-nuclei. We assume that the sterile neutrino mass-eigenstate might oscillate with the two lightest active neutrino mass-eigenstates, with mixing angles ϕ1 and ϕ2. We also allow a constant renormalization (represented by a parameter (ζ)) of the sterile neutrino occupation factor. Taking ζ and the mixing angles as free parameters, we have computed distribution functions of active and sterile neutrinos and primordial abundances. Using observable data we set constrains in the free parameters of the model. It is found that the data on primordial abundances are consistent with small mixing angles and with a value of ζ smaller than 0.65 at 3σ level. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/127046 |
url |
http://sedici.unlp.edu.ar/handle/10915/127046 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/altIdentifier/issn/0218-3013 info:eu-repo/semantics/altIdentifier/issn/1793-6608 info:eu-repo/semantics/altIdentifier/doi/10.1142/s0218301314500803 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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application/pdf |
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